CSCValidation.cc

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/*
 *  validation package for CSC DIGIs, RECHITs and SEGMENTs + more.
 *
 *  original authors:
 *  Michael Schmitt (Northwestern University)
 *  Andy Kubik (Northwestern University)
 * 
 *  CONTACT: CSC DPG (Jul-2022)
 *  
 */

// UPDATED AND RUNNING IN 12_x 15.07.2022 TIM COX - includes updates from external version

#include "RecoLocalMuon/CSCValidation/src/CSCValidation.h"

using namespace std;
using namespace edm;

//  CONSTRUCTOR  //
CSCValidation::CSCValidation(const ParameterSet& pset) {
  // Get the various input parameters
  rootFileName = pset.getUntrackedParameter<std::string>("rootFileName", "valHists.root");
  isSimulation = pset.getUntrackedParameter<bool>("isSimulation", false);
  writeTreeToFile = pset.getUntrackedParameter<bool>("writeTreeToFile", true);
  detailedAnalysis = pset.getUntrackedParameter<bool>("detailedAnalysis", false);
  useDigis = pset.getUntrackedParameter<bool>("useDigis", true);

  // event quality filter
  useQualityFilter = pset.getUntrackedParameter<bool>("useQualityFilter", false);
  pMin = pset.getUntrackedParameter<double>("pMin", 4.);
  chisqMax = pset.getUntrackedParameter<double>("chisqMax", 20.);
  nCSCHitsMin = pset.getUntrackedParameter<int>("nCSCHitsMin", 10);
  nCSCHitsMax = pset.getUntrackedParameter<int>("nCSCHitsMax", 25);
  lengthMin = pset.getUntrackedParameter<double>("lengthMin", 140.);
  lengthMax = pset.getUntrackedParameter<double>("lengthMax", 600.);
  deltaPhiMax = pset.getUntrackedParameter<double>("deltaPhiMax", 0.2);
  polarMax = pset.getUntrackedParameter<double>("polarMax", 0.7);
  polarMin = pset.getUntrackedParameter<double>("polarMin", 0.3);

  // trigger filter
  useTriggerFilter = pset.getUntrackedParameter<bool>("useTriggerFilter", false);

  // input tags for collections
  rd_token = consumes<FEDRawDataCollection>(pset.getParameter<edm::InputTag>("rawDataTag"));
  sd_token = consumes<CSCStripDigiCollection>(pset.getParameter<edm::InputTag>("stripDigiTag"));
  wd_token = consumes<CSCWireDigiCollection>(pset.getParameter<edm::InputTag>("wireDigiTag"));
  cd_token = consumes<CSCComparatorDigiCollection>(pset.getParameter<edm::InputTag>("compDigiTag"));
  al_token = consumes<CSCALCTDigiCollection>(pset.getParameter<edm::InputTag>("alctDigiTag"));
  cl_token = consumes<CSCCLCTDigiCollection>(pset.getParameter<edm::InputTag>("clctDigiTag"));
  co_token = consumes<CSCCorrelatedLCTDigiCollection>(pset.getParameter<edm::InputTag>("corrlctDigiTag"));
  rh_token = consumes<CSCRecHit2DCollection>(pset.getParameter<edm::InputTag>("cscRecHitTag"));
  se_token = consumes<CSCSegmentCollection>(pset.getParameter<edm::InputTag>("cscSegTag"));
  sa_token = consumes<reco::TrackCollection>(pset.getParameter<edm::InputTag>("saMuonTag"));
  l1_token = consumes<L1MuGMTReadoutCollection>(pset.getParameter<edm::InputTag>("l1aTag"));
  tr_token = consumes<TriggerResults>(pset.getParameter<edm::InputTag>("hltTag"));
  sh_token = consumes<PSimHitContainer>(pset.getParameter<edm::InputTag>("simHitTag"));
  // conditions
  pedestalsToken_ = esConsumes<CSCDBPedestals, CSCDBPedestalsRcd>();
  gainsToken_ = esConsumes<CSCDBGains, CSCDBGainsRcd>();
  noiseToken_ = esConsumes<CSCDBNoiseMatrix, CSCDBNoiseMatrixRcd>();
  crosstalkToken_ = esConsumes<CSCDBCrosstalk, CSCDBCrosstalkRcd>();

  crateToken_ = esConsumes<CSCCrateMap, CSCCrateMapRcd>();

  // flags to switch on/off individual modules
  makeOccupancyPlots = pset.getUntrackedParameter<bool>("makeOccupancyPlots", true);
  makeTriggerPlots = pset.getUntrackedParameter<bool>("makeTriggerPlots", false);
  makeStripPlots = pset.getUntrackedParameter<bool>("makeStripPlots", true);
  makeWirePlots = pset.getUntrackedParameter<bool>("makeWirePlots", true);
  makeRecHitPlots = pset.getUntrackedParameter<bool>("makeRecHitPlots", true);
  makeSimHitPlots = pset.getUntrackedParameter<bool>("makeSimHitPlots", true);
  makeSegmentPlots = pset.getUntrackedParameter<bool>("makeSegmentPlots", true);
  makeResolutionPlots = pset.getUntrackedParameter<bool>("makeResolutionPlots", true);
  makePedNoisePlots = pset.getUntrackedParameter<bool>("makePedNoisePlots", true);
  makeEfficiencyPlots = pset.getUntrackedParameter<bool>("makeEfficiencyPlots", true);
  makeGasGainPlots = pset.getUntrackedParameter<bool>("makeGasGainPlots", true);
  makeAFEBTimingPlots = pset.getUntrackedParameter<bool>("makeAFEBTimingPlots", true);
  makeCompTimingPlots = pset.getUntrackedParameter<bool>("makeCompTimingPlots", true);
  makeADCTimingPlots = pset.getUntrackedParameter<bool>("makeADCTimingPlots", true);
  makeRHNoisePlots = pset.getUntrackedParameter<bool>("makeRHNoisePlots", false);
  makeCalibPlots = pset.getUntrackedParameter<bool>("makeCalibPlots", false);
  makeStandalonePlots = pset.getUntrackedParameter<bool>("makeStandalonePlots", false);
  makeTimeMonitorPlots = pset.getUntrackedParameter<bool>("makeTimeMonitorPlots", false);
  makeHLTPlots = pset.getUntrackedParameter<bool>("makeHLTPlots", false);

  // set counters to zero
  nEventsAnalyzed = 0;
  rhTreeCount = 0;
  segTreeCount = 0;
  firstEvent = true;

  // Create the root file for the histograms
  theFile = new TFile(rootFileName.c_str(), "RECREATE");
  theFile->cd();

  // Create object of class CSCValHists to manage histograms
  histos = new CSCValHists();

  // book Occupancy Histos
  hOWires = new TH2I("hOWires", "Wire Digi Occupancy", 36, 0.5, 36.5, 20, 0.5, 20.5);
  hOStrips = new TH2I("hOStrips", "Strip Digi Occupancy", 36, 0.5, 36.5, 20, 0.5, 20.5);
  hORecHits = new TH2I("hORecHits", "RecHit Occupancy", 36, 0.5, 36.5, 20, 0.5, 20.5);
  hOSegments = new TH2I("hOSegments", "Segments Occupancy", 36, 0.5, 36.5, 20, 0.5, 20.5);

  // book Eff histos
  hSSTE = new TH1F("hSSTE", "hSSTE", 40, 0, 40);
  hRHSTE = new TH1F("hRHSTE", "hRHSTE", 40, 0, 40);
  hSEff = new TH1F("hSEff", "Segment Efficiency", 20, 0.5, 20.5);
  hRHEff = new TH1F("hRHEff", "recHit Efficiency", 20, 0.5, 20.5);

  const int nChambers = 36;
  const int nTypes = 20;
  float nCH_min = 0.5;
  float nCh_max = float(nChambers) + 0.5;
  float nT_min = 0.5;
  float nT_max = float(nTypes) + 0.5;

  hSSTE2 = new TH2F("hSSTE2", "hSSTE2", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);
  hRHSTE2 = new TH2F("hRHSTE2", "hRHSTE2", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);
  hStripSTE2 = new TH2F("hStripSTE2", "hStripSTE2", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);
  hWireSTE2 = new TH2F("hWireSTE2", "hWireSTE2", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);

  hEffDenominator = new TH2F("hEffDenominator", "hEffDenominator", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);
  hSEff2 = new TH2F("hSEff2", "Segment Efficiency 2D", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);
  hRHEff2 = new TH2F("hRHEff2", "recHit Efficiency 2D", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);

  hStripEff2 = new TH2F("hStripEff2", "strip Efficiency 2D", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);
  hWireEff2 = new TH2F("hWireEff2", "wire Efficiency 2D", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);

  hSensitiveAreaEvt =
      new TH2F("hSensitiveAreaEvt", "events in sensitive area", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);

  hSSTETight = new TH1F("hSSTETight", "hSSTE Tight", 40, 0, 40);
  hRHSTETight = new TH1F("hRHSTETight", "hRHSTE Tight", 40, 0, 40);

  hSSTE2Tight = new TH2F("hSSTE2Tight", "hSSTE2 Tight", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);
  hRHSTE2Tight = new TH2F("hRHSTE2Tight", "hRHSTE2 Tight", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);
  hStripSTE2Tight =
      new TH2F("hStripSTE2Tight", "hStripSTE2 Tight", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);
  hWireSTE2Tight = new TH2F("hWireSTE2Tight", "hWireSTE2 Tight", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);
  hEffDenominatorTight =
      new TH2F("hEffDenominatorTight", "hEffDenominator Tight", nChambers, nCH_min, nCh_max, nTypes, nT_min, nT_max);

  // setup trees to hold global position data for rechits and segments
  if (writeTreeToFile)
    histos->setupTrees();

  geomToken_ = esConsumes<CSCGeometry, MuonGeometryRecord>();
}

//  DESTRUCTOR  //
CSCValidation::~CSCValidation() {
  // produce final efficiency histograms
  histoEfficiency(hRHSTE, hRHEff);
  histoEfficiency(hSSTE, hSEff);
  hSEff2->Divide(hSSTE2, hEffDenominator, 1., 1., "B");
  hRHEff2->Divide(hRHSTE2, hEffDenominator, 1., 1., "B");
  hStripEff2->Divide(hStripSTE2, hEffDenominator, 1., 1., "B");
  hWireEff2->Divide(hWireSTE2, hEffDenominator, 1., 1., "B");

  histos->insertPlot(hRHSTETight, "hRHSTETight", "Efficiency");
  histos->insertPlot(hSSTETight, "hSSTETight", "Efficiency");
  histos->insertPlot(hStripSTE2Tight, "hStripSTE2Tight", "Efficiency");
  histos->insertPlot(hWireSTE2Tight, "hWireSTE2Tight", "Efficiency");
  histos->insertPlot(hRHSTE2Tight, "hRHSTE2Tight", "Efficiency");
  histos->insertPlot(hSSTE2Tight, "hSSTE2Tight", "Efficiency");
  histos->insertPlot(hEffDenominatorTight, "hEffDenominatorTight", "Efficiency");

  histos->insertPlot(hRHSTE, "hRHSTE", "Efficiency");
  histos->insertPlot(hSSTE, "hSSTE", "Efficiency");
  histos->insertPlot(hSSTE2, "hSSTE2", "Efficiency");
  histos->insertPlot(hEffDenominator, "hEffDenominator", "Efficiency");
  histos->insertPlot(hRHSTE2, "hRHSTE2", "Efficiency");
  histos->insertPlot(hStripSTE2, "hStripSTE2", "Efficiency");
  histos->insertPlot(hWireSTE2, "hWireSTE2", "Efficiency");

  //moving this to post job macros
  histos->insertPlot(hSEff, "hSEff", "Efficiency");
  histos->insertPlot(hRHEff, "hRHEff", "Efficiency");

  histos->insertPlot(hSEff2, "hSEff2", "Efficiency");
  histos->insertPlot(hRHEff2, "hRHEff2", "Efficiency");
  histos->insertPlot(hStripEff2, "hStripff2", "Efficiency");
  histos->insertPlot(hWireEff2, "hWireff2", "Efficiency");

  histos->insertPlot(hSensitiveAreaEvt, "", "Efficiency");

  // throw in occupancy plots so they're saved
  histos->insertPlot(hOWires, "hOWires", "Digis");
  histos->insertPlot(hOStrips, "hOStrips", "Digis");
  histos->insertPlot(hORecHits, "hORecHits", "recHits");
  histos->insertPlot(hOSegments, "hOSegments", "Segments");

  // write histos to the specified file
  histos->writeHists(theFile);
  if (writeTreeToFile)
    histos->writeTrees(theFile);
  theFile->Close();
}

//  Analysis  //
void CSCValidation::analyze(edm::Event const& event, edm::EventSetup const& eventSetup) {
  // increment counter
  nEventsAnalyzed++;

  //int iRun   = event.id().run();
  //int iEvent = event.id().event();

  // Get the Digis
  edm::Handle<CSCWireDigiCollection> wires;
  edm::Handle<CSCStripDigiCollection> strips;
  edm::Handle<CSCComparatorDigiCollection> compars;
  edm::Handle<CSCALCTDigiCollection> alcts;
  edm::Handle<CSCCLCTDigiCollection> clcts;
  edm::Handle<CSCCorrelatedLCTDigiCollection> correlatedlcts;
  if (useDigis) {
    event.getByToken(sd_token, strips);
    event.getByToken(wd_token, wires);
    event.getByToken(cd_token, compars);
    event.getByToken(al_token, alcts);
    event.getByToken(cl_token, clcts);
    event.getByToken(co_token, correlatedlcts);
  }

  // Get the CSC Geometry :
  edm::ESHandle<CSCGeometry> cscGeom = eventSetup.getHandle(geomToken_);

  // Get the RecHits collection :
  edm::Handle<CSCRecHit2DCollection> recHits;
  event.getByToken(rh_token, recHits);

  //CSCRecHit2DCollection::const_iterator recIt;
  //for (recIt = recHits->begin(); recIt != recHits->end(); recIt++) {
  //  recIt->print();
  // }

  // Get the SimHits (if applicable)
  edm::Handle<PSimHitContainer> simHits;
  if (isSimulation)
    event.getByToken(sh_token, simHits);

  // get CSC segment collection
  edm::Handle<CSCSegmentCollection> cscSegments;
  event.getByToken(se_token, cscSegments);

  // get the trigger collection
  edm::Handle<L1MuGMTReadoutCollection> pCollection;
  if (makeTriggerPlots || useTriggerFilter || (useDigis && makeTimeMonitorPlots)) {
    event.getByToken(l1_token, pCollection);
  }
  edm::Handle<TriggerResults> hlt;
  if (makeHLTPlots) {
    event.getByToken(tr_token, hlt);
  }

  // get the standalone muon collection
  edm::Handle<reco::TrackCollection> saMuons;
  if (makeStandalonePlots || useQualityFilter) {
    event.getByToken(sa_token, saMuons);
  }

  // Run the modules //

  // Only do this for the first event
  // this is probably outdated and needs to be looked at
  if (nEventsAnalyzed == 1 && makeCalibPlots)
    doCalibrations(eventSetup);

  // Look at the l1a trigger info (returns true if csc L1A present)
  bool CSCL1A = false;
  if (makeTriggerPlots || useTriggerFilter)
    CSCL1A = doTrigger(pCollection);
  if (!useTriggerFilter)
    CSCL1A = true;  // always true if not filtering on trigger

  cleanEvent = false;
  if (makeStandalonePlots || useQualityFilter)
    cleanEvent = filterEvents(recHits, cscSegments, saMuons);
  if (!useQualityFilter)
    cleanEvent = true;  // always true if not filtering on event quality

  // look at various chamber occupancies
  // keep this outside of filter for diagnostics???
  if (makeOccupancyPlots && CSCL1A)
    doOccupancies(strips, wires, recHits, cscSegments);

  if (makeHLTPlots)
    doHLT(hlt);

  if (cleanEvent && CSCL1A) {
    // general look at strip digis
    if (makeStripPlots && useDigis)
      doStripDigis(strips);

    // general look at wire digis
    if (makeWirePlots && useDigis)
      doWireDigis(wires);

    // general look at rechits
    if (makeRecHitPlots)
      doRecHits(recHits, cscGeom);

    // look at simHits
    if (isSimulation && makeSimHitPlots)
      doSimHits(recHits, simHits);

    // general look at Segments
    if (makeSegmentPlots)
      doSegments(cscSegments, cscGeom);

    // look at hit resolution
    if (makeResolutionPlots)
      doResolution(cscSegments, cscGeom);

    // look at Pedestal Noise
    if (makePedNoisePlots && useDigis)
      doPedestalNoise(strips);

    // look at recHit and segment efficiencies
    if (makeEfficiencyPlots)
      doEfficiencies(wires, strips, recHits, cscSegments, cscGeom);

    // gas gain
    if (makeGasGainPlots && useDigis)
      doGasGain(*wires, *strips, *recHits);

    // AFEB timing
    if (makeAFEBTimingPlots && useDigis)
      doAFEBTiming(*wires);

    // Comparators timing
    if (makeCompTimingPlots && useDigis)
      doCompTiming(*compars);

    // strip ADC timing
    if (makeADCTimingPlots)
      doADCTiming(*recHits);

    // recHit Noise
    if (makeRHNoisePlots && useDigis)
      doNoiseHits(recHits, cscSegments, cscGeom, strips);

    // look at standalone muons (not implemented yet)
    if (makeStandalonePlots)
      doStandalone(saMuons);

    // make plots for monitoring the trigger and offline timing
    if (makeTimeMonitorPlots)
      doTimeMonitoring(recHits, cscSegments, alcts, clcts, correlatedlcts, pCollection, cscGeom, eventSetup, event);

    firstEvent = false;
  }
}

// ==============================================
//
// event filter, returns true only for events with "good" standalone muon
//
// ==============================================

bool CSCValidation::filterEvents(edm::Handle<CSCRecHit2DCollection> recHits,
                                 edm::Handle<CSCSegmentCollection> cscSegments,
                                 edm::Handle<reco::TrackCollection> saMuons) {
  //int  nGoodSAMuons = 0;

  if (recHits->size() < 4 || recHits->size() > 100)
    return false;
  if (cscSegments->size() < 1 || cscSegments->size() > 15)
    return false;
  return true;
  //if (saMuons->size() != 1) return false;
  /*
  for(reco::TrackCollection::const_iterator muon = saMuons->begin(); muon != saMuons->end(); ++ muon ) {
    double p  = muon->p();
    double reducedChisq = muon->normalizedChi2();

    GlobalPoint  innerPnt(muon->innerPosition().x(),muon->innerPosition().y(),muon->innerPosition().z());
    GlobalPoint  outerPnt(muon->outerPosition().x(),muon->outerPosition().y(),muon->outerPosition().z());
    GlobalVector innerKin(muon->innerMomentum().x(),muon->innerMomentum().y(),muon->innerMomentum().z());
    GlobalVector outerKin(muon->outerMomentum().x(),muon->outerMomentum().y(),muon->outerMomentum().z());
    GlobalVector deltaPnt = innerPnt - outerPnt;
    double crudeLength = deltaPnt.mag();
    double deltaPhi = innerPnt.phi() - outerPnt.phi();
    double innerGlobalPolarAngle = innerKin.theta();
    double outerGlobalPolarAngle = outerKin.theta();

    int nCSCHits = 0;
    for (trackingRecHit_iterator hit = muon->recHitsBegin(); hit != muon->recHitsEnd(); ++hit ) {
      if ( (*hit)->isValid() ) {
        const DetId detId( (*hit)->geographicalId() );
        if (detId.det() == DetId::Muon) {
          if (detId.subdetId() == MuonSubdetId::CSC) {
            nCSCHits++;
          } // this is a CSC hit
        } // this is a muon hit
      } // hit is valid
    } // end loop over rechits

    bool goodSAMuon = (p > pMin)
      && ( reducedChisq < chisqMax )
      && ( nCSCHits >= nCSCHitsMin )
      && ( nCSCHits <= nCSCHitsMax )
      && ( crudeLength > lengthMin )
      && ( crudeLength < lengthMax );


    goodSAMuon = goodSAMuon && ( fabs(deltaPhi) < deltaPhiMax );
    goodSAMuon = goodSAMuon &&
      (
       ( (     innerGlobalPolarAngle > polarMin) && (     innerGlobalPolarAngle < polarMax) ) ||
       ( (M_PI-innerGlobalPolarAngle > polarMin) && (M_PI-innerGlobalPolarAngle < polarMax) )
       );
    goodSAMuon = goodSAMuon &&
      (
       ( (     outerGlobalPolarAngle > polarMin) && (     outerGlobalPolarAngle < polarMax) ) ||
       ( (M_PI-outerGlobalPolarAngle > polarMin) && (M_PI-outerGlobalPolarAngle < polarMax) )
       );

   //goodSAMuon = goodSAMuon && (nCSCHits > nCSCHitsMin) && (nCSCHits < 13);
   //goodSAMuon = goodSAMuon && (nCSCHits > 13) && (nCSCHits < 19);
   //goodSAMuon = goodSAMuon && (nCSCHits > 19) && (nCSCHits < nCSCHitsMax);


   if (goodSAMuon) nGoodSAMuons++;

  } // end loop over stand-alone muon collection


  histos->fill1DHist(nGoodSAMuons,"hNGoodMuons", "Number of Good STA Muons per Event",11,-0.5,10.5,"STAMuons");

  if (nGoodSAMuons == 1) return true;
  return false;
  */
}

// ==============================================
//
// look at Occupancies
//
// ==============================================

void CSCValidation::doOccupancies(edm::Handle<CSCStripDigiCollection> strips,
                                  edm::Handle<CSCWireDigiCollection> wires,
                                  edm::Handle<CSCRecHit2DCollection> recHits,
                                  edm::Handle<CSCSegmentCollection> cscSegments) {
  bool wireo[2][4][4][36];
  bool stripo[2][4][4][36];
  bool rechito[2][4][4][36];
  bool segmento[2][4][4][36];

  bool hasWires = false;
  bool hasStrips = false;
  bool hasRecHits = false;
  bool hasSegments = false;

  for (int e = 0; e < 2; e++) {
    for (int s = 0; s < 4; s++) {
      for (int r = 0; r < 4; r++) {
        for (int c = 0; c < 36; c++) {
          wireo[e][s][r][c] = false;
          stripo[e][s][r][c] = false;
          rechito[e][s][r][c] = false;
          segmento[e][s][r][c] = false;
        }
      }
    }
  }

  if (useDigis) {
    //wires
    for (CSCWireDigiCollection::DigiRangeIterator wi = wires->begin(); wi != wires->end(); wi++) {
      CSCDetId id = (CSCDetId)(*wi).first;
      int kEndcap = id.endcap();
      int kRing = id.ring();
      int kStation = id.station();
      int kChamber = id.chamber();
      std::vector<CSCWireDigi>::const_iterator wireIt = (*wi).second.first;
      std::vector<CSCWireDigi>::const_iterator lastWire = (*wi).second.second;
      for (; wireIt != lastWire; ++wireIt) {
        if (!wireo[kEndcap - 1][kStation - 1][kRing - 1][kChamber - 1]) {
          wireo[kEndcap - 1][kStation - 1][kRing - 1][kChamber - 1] = true;
          hOWires->Fill(kChamber, typeIndex(id));
          histos->fill1DHist(
              chamberSerial(id), "hOWireSerial", "Wire Occupancy by Chamber Serial", 601, -0.5, 600.5, "Digis");
          hasWires = true;
        }
      }
    }

    //strips
    for (CSCStripDigiCollection::DigiRangeIterator si = strips->begin(); si != strips->end(); si++) {
      CSCDetId id = (CSCDetId)(*si).first;
      int kEndcap = id.endcap();
      int kRing = id.ring();
      int kStation = id.station();
      int kChamber = id.chamber();
      std::vector<CSCStripDigi>::const_iterator stripIt = (*si).second.first;
      std::vector<CSCStripDigi>::const_iterator lastStrip = (*si).second.second;
      for (; stripIt != lastStrip; ++stripIt) {
        std::vector<int> myADCVals = stripIt->getADCCounts();
        bool thisStripFired = false;
        float thisPedestal = 0.5 * (float)(myADCVals[0] + myADCVals[1]);
        float threshold = 13.3;
        float diff = 0.;
        for (unsigned int iCount = 0; iCount < myADCVals.size(); iCount++) {
          diff = (float)myADCVals[iCount] - thisPedestal;
          if (diff > threshold) {
            thisStripFired = true;
          }
        }
        if (thisStripFired) {
          if (!stripo[kEndcap - 1][kStation - 1][kRing - 1][kChamber - 1]) {
            stripo[kEndcap - 1][kStation - 1][kRing - 1][kChamber - 1] = true;
            hOStrips->Fill(kChamber, typeIndex(id));
            histos->fill1DHist(
                chamberSerial(id), "hOStripSerial", "Strip Occupancy by Chamber Serial", 601, -0.5, 600.5, "Digis");
            hasStrips = true;
          }
        }
      }
    }
  }

  //rechits
  CSCRecHit2DCollection::const_iterator recIt;
  for (recIt = recHits->begin(); recIt != recHits->end(); recIt++) {
    CSCDetId idrec = (CSCDetId)(*recIt).cscDetId();
    int kEndcap = idrec.endcap();
    int kRing = idrec.ring();
    int kStation = idrec.station();
    int kChamber = idrec.chamber();
    if (!rechito[kEndcap - 1][kStation - 1][kRing - 1][kChamber - 1]) {
      rechito[kEndcap - 1][kStation - 1][kRing - 1][kChamber - 1] = true;
      histos->fill1DHist(
          chamberSerial(idrec), "hORecHitsSerial", "RecHit Occupancy by Chamber Serial", 601, -0.5, 600.5, "recHits");
      hORecHits->Fill(kChamber, typeIndex(idrec));
      hasRecHits = true;
    }
  }

  //segments
  for (CSCSegmentCollection::const_iterator segIt = cscSegments->begin(); segIt != cscSegments->end(); segIt++) {
    CSCDetId id = (CSCDetId)(*segIt).cscDetId();
    int kEndcap = id.endcap();
    int kRing = id.ring();
    int kStation = id.station();
    int kChamber = id.chamber();
    if (!segmento[kEndcap - 1][kStation - 1][kRing - 1][kChamber - 1]) {
      segmento[kEndcap - 1][kStation - 1][kRing - 1][kChamber - 1] = true;
      histos->fill1DHist(
          chamberSerial(id), "hOSegmentsSerial", "Segment Occupancy by Chamber Serial", 601, -0.5, 600.5, "Segments");
      hOSegments->Fill(kChamber, typeIndex(id));
      hasSegments = true;
    }
  }

  // overall CSC occupancy (events with CSC data compared to total)
  histos->fill1DHist(1, "hCSCOccupancy", "overall CSC occupancy", 15, -0.5, 14.5, "GeneralHists");
  if (hasWires)
    histos->fill1DHist(3, "hCSCOccupancy", "overall CSC occupancy", 15, -0.5, 14.5, "GeneralHists");
  if (hasStrips)
    histos->fill1DHist(5, "hCSCOccupancy", "overall CSC occupancy", 15, -0.5, 14.5, "GeneralHists");
  if (hasWires && hasStrips)
    histos->fill1DHist(7, "hCSCOccupancy", "overall CSC occupancy", 15, -0.5, 14.5, "GeneralHists");
  if (hasRecHits)
    histos->fill1DHist(9, "hCSCOccupancy", "overall CSC occupancy", 15, -0.5, 14.5, "GeneralHists");
  if (hasSegments)
    histos->fill1DHist(11, "hCSCOccupancy", "overall CSC occupancy", 15, -0.5, 14.5, "GeneralHists");
  if (!cleanEvent)
    histos->fill1DHist(13, "hCSCOccupancy", "overall CSC occupancy", 15, -0.5, 14.5, "GeneralHists");
}

// ==============================================
//
// look at Trigger info
//
// ==============================================

bool CSCValidation::doTrigger(edm::Handle<L1MuGMTReadoutCollection> pCollection) {
  std::vector<L1MuGMTReadoutRecord> L1Mrec = pCollection->getRecords();
  std::vector<L1MuGMTReadoutRecord>::const_iterator igmtrr;

  bool csc_l1a = false;
  bool dt_l1a = false;
  bool rpcf_l1a = false;
  bool rpcb_l1a = false;
  bool beamHaloTrigger = false;

  int myBXNumber = -1000;

  for (igmtrr = L1Mrec.begin(); igmtrr != L1Mrec.end(); igmtrr++) {
    std::vector<L1MuRegionalCand>::const_iterator iter1;
    std::vector<L1MuRegionalCand> rmc;

    // CSC
    int icsc = 0;
    rmc = igmtrr->getCSCCands();
    for (iter1 = rmc.begin(); iter1 != rmc.end(); iter1++) {
      if (!(*iter1).empty()) {
        icsc++;
        int kQuality = (*iter1).quality();  // kQuality = 1 means beam halo
        if (kQuality == 1)
          beamHaloTrigger = true;
      }
    }
    if (igmtrr->getBxInEvent() == 0 && icsc > 0)
      csc_l1a = true;
    if (igmtrr->getBxInEvent() == 0) {
      myBXNumber = igmtrr->getBxNr();
    }

    // DT
    int idt = 0;
    rmc = igmtrr->getDTBXCands();
    for (iter1 = rmc.begin(); iter1 != rmc.end(); iter1++) {
      if (!(*iter1).empty()) {
        idt++;
      }
    }
    if (igmtrr->getBxInEvent() == 0 && idt > 0)
      dt_l1a = true;

    // RPC Barrel
    int irpcb = 0;
    rmc = igmtrr->getBrlRPCCands();
    for (iter1 = rmc.begin(); iter1 != rmc.end(); iter1++) {
      if (!(*iter1).empty()) {
        irpcb++;
      }
    }
    if (igmtrr->getBxInEvent() == 0 && irpcb > 0)
      rpcb_l1a = true;

    // RPC Forward
    int irpcf = 0;
    rmc = igmtrr->getFwdRPCCands();
    for (iter1 = rmc.begin(); iter1 != rmc.end(); iter1++) {
      if (!(*iter1).empty()) {
        irpcf++;
      }
    }
    if (igmtrr->getBxInEvent() == 0 && irpcf > 0)
      rpcf_l1a = true;
  }

  // Fill some histograms with L1A info
  if (csc_l1a)
    histos->fill1DHist(myBXNumber, "vtBXNumber", "BX Number", 4001, -0.5, 4000.5, "Trigger");
  if (csc_l1a)
    histos->fill1DHist(1, "vtBits", "trigger bits", 11, -0.5, 10.5, "Trigger");
  if (dt_l1a)
    histos->fill1DHist(2, "vtBits", "trigger bits", 11, -0.5, 10.5, "Trigger");
  if (rpcb_l1a)
    histos->fill1DHist(3, "vtBits", "trigger bits", 11, -0.5, 10.5, "Trigger");
  if (rpcf_l1a)
    histos->fill1DHist(4, "vtBits", "trigger bits", 11, -0.5, 10.5, "Trigger");
  if (beamHaloTrigger)
    histos->fill1DHist(8, "vtBits", "trigger bits", 11, -0.5, 10.5, "Trigger");

  if (csc_l1a) {
    histos->fill1DHist(1, "vtCSCY", "trigger bits", 11, -0.5, 10.5, "Trigger");
    if (dt_l1a)
      histos->fill1DHist(2, "vtCSCY", "trigger bits", 11, -0.5, 10.5, "Trigger");
    if (rpcb_l1a)
      histos->fill1DHist(3, "vtCSCY", "trigger bits", 11, -0.5, 10.5, "Trigger");
    if (rpcf_l1a)
      histos->fill1DHist(4, "vtCSCY", "trigger bits", 11, -0.5, 10.5, "Trigger");
    if (dt_l1a || rpcb_l1a || rpcf_l1a)
      histos->fill1DHist(5, "vtCSCY", "trigger bits", 11, -0.5, 10.5, "Trigger");
    if (!(dt_l1a || rpcb_l1a || rpcf_l1a))
      histos->fill1DHist(6, "vtCSCY", "trigger bits", 11, -0.5, 10.5, "Trigger");
  } else {
    histos->fill1DHist(1, "vtCSCN", "trigger bits", 11, -0.5, 10.5, "Trigger");
    if (dt_l1a)
      histos->fill1DHist(2, "vtCSCN", "trigger bits", 11, -0.5, 10.5, "Trigger");
    if (rpcb_l1a)
      histos->fill1DHist(3, "vtCSCN", "trigger bits", 11, -0.5, 10.5, "Trigger");
    if (rpcf_l1a)
      histos->fill1DHist(4, "vtCSCN", "trigger bits", 11, -0.5, 10.5, "Trigger");
    if (dt_l1a || rpcb_l1a || rpcf_l1a)
      histos->fill1DHist(5, "vtCSCN", "trigger bits", 11, -0.5, 10.5, "Trigger");
    if (!(dt_l1a || rpcb_l1a || rpcf_l1a))
      histos->fill1DHist(6, "vtCSCN", "trigger bits", 11, -0.5, 10.5, "Trigger");
  }

  // if valid CSC L1A then return true for possible use elsewhere

  if (csc_l1a)
    return true;

  return false;
}

// ==============================================
//
// look at HLT Trigger
//
// ==============================================

bool CSCValidation::doHLT(Handle<TriggerResults> hlt) {
  // HLT stuff
  int hltSize = hlt->size();
  for (int i = 0; i < hltSize; ++i) {
    if (hlt->accept(i))
      histos->fill1DHist(i, "hltBits", "HLT Trigger Bits", hltSize + 1, -0.5, (float)hltSize + 0.5, "Trigger");
  }

  return true;
}

// ==============================================
//
// look at Calibrations
//
// ==============================================

void CSCValidation::doCalibrations(const edm::EventSetup& eventSetup) {
  // Only do this for the first event
  if (nEventsAnalyzed == 1) {
    LogDebug("Calibrations") << "Loading Calibrations...";

    // get the gains
    edm::ESHandle<CSCDBGains> hGains = eventSetup.getHandle(gainsToken_);
    const CSCDBGains* pGains = hGains.product();
    // get the crosstalks
    edm::ESHandle<CSCDBCrosstalk> hCrosstalk = eventSetup.getHandle(crosstalkToken_);
    const CSCDBCrosstalk* pCrosstalk = hCrosstalk.product();
    // get the noise matrix
    edm::ESHandle<CSCDBNoiseMatrix> hNoiseMatrix = eventSetup.getHandle(noiseToken_);
    const CSCDBNoiseMatrix* pNoiseMatrix = hNoiseMatrix.product();
    // get pedestals
    edm::ESHandle<CSCDBPedestals> hPedestals = eventSetup.getHandle(pedestalsToken_);
    const CSCDBPedestals* pPedestals = hPedestals.product();

    LogDebug("Calibrations") << "Calibrations Loaded!";

    for (int i = 0; i < 400; i++) {
      int bin = i + 1;
      histos->fillCalibHist(pGains->gains[i].gain_slope, "hCalibGainsS", "Gains Slope", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pCrosstalk->crosstalk[i].xtalk_slope_left, "hCalibXtalkSL", "Xtalk Slope Left", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pCrosstalk->crosstalk[i].xtalk_slope_right, "hCalibXtalkSR", "Xtalk Slope Right", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(pCrosstalk->crosstalk[i].xtalk_intercept_left,
                            "hCalibXtalkIL",
                            "Xtalk Intercept Left",
                            400,
                            0,
                            400,
                            bin,
                            "Calib");
      histos->fillCalibHist(pCrosstalk->crosstalk[i].xtalk_intercept_right,
                            "hCalibXtalkIR",
                            "Xtalk Intercept Right",
                            400,
                            0,
                            400,
                            bin,
                            "Calib");
      histos->fillCalibHist(pPedestals->pedestals[i].ped, "hCalibPedsP", "Peds", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(pPedestals->pedestals[i].rms, "hCalibPedsR", "Peds RMS", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pNoiseMatrix->matrix[i].elem33, "hCalibNoise33", "Noise Matrix 33", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pNoiseMatrix->matrix[i].elem34, "hCalibNoise34", "Noise Matrix 34", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pNoiseMatrix->matrix[i].elem35, "hCalibNoise35", "Noise Matrix 35", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pNoiseMatrix->matrix[i].elem44, "hCalibNoise44", "Noise Matrix 44", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pNoiseMatrix->matrix[i].elem45, "hCalibNoise45", "Noise Matrix 45", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pNoiseMatrix->matrix[i].elem46, "hCalibNoise46", "Noise Matrix 46", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pNoiseMatrix->matrix[i].elem55, "hCalibNoise55", "Noise Matrix 55", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pNoiseMatrix->matrix[i].elem56, "hCalibNoise56", "Noise Matrix 56", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pNoiseMatrix->matrix[i].elem57, "hCalibNoise57", "Noise Matrix 57", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pNoiseMatrix->matrix[i].elem66, "hCalibNoise66", "Noise Matrix 66", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pNoiseMatrix->matrix[i].elem67, "hCalibNoise67", "Noise Matrix 67", 400, 0, 400, bin, "Calib");
      histos->fillCalibHist(
          pNoiseMatrix->matrix[i].elem77, "hCalibNoise77", "Noise Matrix 77", 400, 0, 400, bin, "Calib");
    }
  }
}

// ==============================================
//
// look at WIRE DIGIs
//
// ==============================================

void CSCValidation::doWireDigis(edm::Handle<CSCWireDigiCollection> wires) {
  int nWireGroupsTotal = 0;
  for (CSCWireDigiCollection::DigiRangeIterator dWDiter = wires->begin(); dWDiter != wires->end(); dWDiter++) {
    CSCDetId id = (CSCDetId)(*dWDiter).first;
    std::vector<CSCWireDigi>::const_iterator wireIter = (*dWDiter).second.first;
    std::vector<CSCWireDigi>::const_iterator lWire = (*dWDiter).second.second;
    for (; wireIter != lWire; ++wireIter) {
      int myWire = wireIter->getWireGroup();
      int myTBin = wireIter->getTimeBin();
      nWireGroupsTotal++;
      histos->fill1DHistByType(myWire, "hWireWire", "Wiregroup Numbers Fired", id, 113, -0.5, 112.5, "Digis");
      histos->fill1DHistByType(myTBin, "hWireTBin", "Wire TimeBin Fired", id, 17, -0.5, 16.5, "Digis");
      histos->fillProfile(
          chamberSerial(id), myTBin, "hWireTBinProfile", "Wire TimeBin Fired", 601, -0.5, 600.5, -0.5, 16.5, "Digis");
      if (detailedAnalysis) {
        histos->fill1DHistByLayer(
            myWire, "hWireWire", "Wiregroup Numbers Fired", id, 113, -0.5, 112.5, "WireNumberByLayer");
        histos->fill1DHistByLayer(myTBin, "hWireTBin", "Wire TimeBin Fired", id, 17, -0.5, 16.5, "WireTimeByLayer");
      }
    }
  }  // end wire loop

  // this way you can zero suppress but still store info on # events with no digis
  if (nWireGroupsTotal == 0)
    nWireGroupsTotal = -1;

  histos->fill1DHist(nWireGroupsTotal, "hWirenGroupsTotal", "Wires Fired Per Event", 251, -0.5, 250.5, "Digis");
}

// ==============================================
//
// look at STRIP DIGIs
//
// ==============================================

void CSCValidation::doStripDigis(edm::Handle<CSCStripDigiCollection> strips) {
  int nStripsFired = 0;
  for (CSCStripDigiCollection::DigiRangeIterator dSDiter = strips->begin(); dSDiter != strips->end(); dSDiter++) {
    CSCDetId id = (CSCDetId)(*dSDiter).first;
    std::vector<CSCStripDigi>::const_iterator stripIter = (*dSDiter).second.first;
    std::vector<CSCStripDigi>::const_iterator lStrip = (*dSDiter).second.second;
    for (; stripIter != lStrip; ++stripIter) {
      int myStrip = stripIter->getStrip();
      std::vector<int> myADCVals = stripIter->getADCCounts();
      bool thisStripFired = false;
      float thisPedestal = 0.5 * (float)(myADCVals[0] + myADCVals[1]);
      float threshold = 13.3;
      float diff = 0.;
      for (unsigned int iCount = 0; iCount < myADCVals.size(); iCount++) {
        diff = (float)myADCVals[iCount] - thisPedestal;
        if (diff > threshold) {
          thisStripFired = true;
        }
      }
      if (thisStripFired) {
        nStripsFired++;
        // fill strip histos
        histos->fill1DHistByType(myStrip, "hStripStrip", "Strip Number", id, 81, -0.5, 80.5, "Digis");
        if (detailedAnalysis) {
          histos->fill1DHistByLayer(myStrip, "hStripStrip", "Strip Number", id, 81, -0.5, 80.5, "StripNumberByLayer");
        }
      }
    }
  }  // end strip loop

  if (nStripsFired == 0)
    nStripsFired = -1;

  histos->fill1DHist(nStripsFired, "hStripNFired", "Fired Strips per Event", 351, -0.5, 350.5, "Digis");
}

//=======================================================
//
// Look at the Pedestal Noise Distributions
//
//=======================================================

void CSCValidation::doPedestalNoise(edm::Handle<CSCStripDigiCollection> strips) {
  constexpr float threshold = 13.3;
  for (CSCStripDigiCollection::DigiRangeIterator dPNiter = strips->begin(); dPNiter != strips->end(); dPNiter++) {
    CSCDetId id = (CSCDetId)(*dPNiter).first;
    std::vector<CSCStripDigi>::const_iterator pedIt = (*dPNiter).second.first;
    std::vector<CSCStripDigi>::const_iterator lStrip = (*dPNiter).second.second;
    for (; pedIt != lStrip; ++pedIt) {
      int myStrip = pedIt->getStrip();
      std::vector<int> myADCVals = pedIt->getADCCounts();
      float TotalADC = getSignal(*strips, id, myStrip);
      float thisPedestal = 0.5 * (float)(myADCVals[0] + myADCVals[1]);
      float thisSignal =
          (1. / 6) * (myADCVals[2] + myADCVals[3] + myADCVals[4] + myADCVals[5] + myADCVals[6] + myADCVals[7]);
      bool thisStripFired = TotalADC > threshold;
      if (!thisStripFired) {
        float ADC = thisSignal - thisPedestal;
        histos->fill1DHist(ADC, "hStripPed", "Pedestal Noise Distribution", 50, -25., 25., "PedestalNoise");
        histos->fill1DHistByType(ADC, "hStripPedME", "Pedestal Noise Distribution", id, 50, -25., 25., "PedestalNoise");
        histos->fillProfile(chamberSerial(id),
                            ADC,
                            "hStripPedMEProfile",
                            "Wire TimeBin Fired",
                            601,
                            -0.5,
                            600.5,
                            -25,
                            25,
                            "PedestalNoise");
        if (detailedAnalysis) {
          histos->fill1DHistByLayer(
              ADC, "hStripPedME", "Pedestal Noise Distribution", id, 50, -25., 25., "PedestalNoiseByLayer");
        }
      }
    }
  }
}

// ==============================================
//
// look at RECHITs
//
// ==============================================

void CSCValidation::doRecHits(edm::Handle<CSCRecHit2DCollection> recHits, edm::ESHandle<CSCGeometry> cscGeom) {
  // Get the RecHits collection :
  int nRecHits = recHits->size();

  // ---------------------
  // Loop over rechits
  // ---------------------

  // Build iterator for rechits and loop :
  CSCRecHit2DCollection::const_iterator dRHIter;
  for (dRHIter = recHits->begin(); dRHIter != recHits->end(); dRHIter++) {
    // Find chamber with rechits in CSC
    CSCDetId idrec = (CSCDetId)(*dRHIter).cscDetId();
    int kEndcap = idrec.endcap();
    int kRing = idrec.ring();
    int kStation = idrec.station();
    int kChamber = idrec.chamber();
    int kLayer = idrec.layer();

    // Store rechit as a Local Point:
    LocalPoint rhitlocal = (*dRHIter).localPosition();
    float xreco = rhitlocal.x();
    float yreco = rhitlocal.y();
    LocalError rerrlocal = (*dRHIter).localPositionError();
    //these errors are squared!
    float xxerr = rerrlocal.xx();
    float yyerr = rerrlocal.yy();
    float xyerr = rerrlocal.xy();
    // errors in strip units
    float stpos = (*dRHIter).positionWithinStrip();
    float sterr = (*dRHIter).errorWithinStrip();

    // Find the charge associated with this hit
    float rHSumQ = 0;
    float sumsides = 0.;
    int adcsize = dRHIter->nStrips() * dRHIter->nTimeBins();
    for (unsigned int i = 0; i < dRHIter->nStrips(); i++) {
      for (unsigned int j = 0; j < dRHIter->nTimeBins() - 1; j++) {
        rHSumQ += dRHIter->adcs(i, j);
        if (i != 1)
          sumsides += dRHIter->adcs(i, j);
      }
    }

    float rHratioQ = sumsides / rHSumQ;
    if (adcsize != 12)
      rHratioQ = -99;

    // Get the signal timing of this hit
    float rHtime = 0;
    rHtime = (*dRHIter).tpeak() / 50.;

    // Get pointer to the layer:
    const CSCLayer* csclayer = cscGeom->layer(idrec);

    // Transform hit position from local chamber geometry to global CMS geom
    GlobalPoint rhitglobal = csclayer->toGlobal(rhitlocal);
    float grecx = rhitglobal.x();
    float grecy = rhitglobal.y();

    // Fill the rechit position branch
    if (writeTreeToFile && rhTreeCount < 1500000) {
      histos->fillRechitTree(xreco, yreco, grecx, grecy, kEndcap, kStation, kRing, kChamber, kLayer);
      rhTreeCount++;
    }

    // Fill some histograms
    // only fill if 3 strips were used in the hit
    histos->fill2DHistByStation(
        grecx, grecy, "hRHGlobal", "recHit Global Position", idrec, 100, -800., 800., 100, -800., 800., "recHits");
    if (kStation == 1 && (kRing == 1 || kRing == 4))
      histos->fill1DHistByType(rHSumQ, "hRHSumQ", "Sum 3x3 recHit Charge", idrec, 125, 0, 4000, "recHits");
    else
      histos->fill1DHistByType(rHSumQ, "hRHSumQ", "Sum 3x3 recHit Charge", idrec, 125, 0, 2000, "recHits");
    histos->fill1DHistByType(rHratioQ, "hRHRatioQ", "Charge Ratio (Ql+Qr)/Qt", idrec, 120, -0.1, 1.1, "recHits");
    histos->fill1DHistByType(rHtime, "hRHTiming", "recHit Timing", idrec, 200, -10, 10, "recHits");
    histos->fill1DHistByType(sqrt(xxerr), "hRHxerr", "RecHit Error on Local X", idrec, 100, -0.1, 2, "recHits");
    histos->fill1DHistByType(sqrt(yyerr), "hRHyerr", "RecHit Error on Local Y", idrec, 100, -0.1, 2, "recHits");
    histos->fill1DHistByType(xyerr, "hRHxyerr", "Corr. RecHit XY Error", idrec, 100, -1, 2, "recHits");
    if (adcsize == 12)
      histos->fill1DHistByType(stpos, "hRHstpos", "Reconstructed Position on Strip", idrec, 120, -0.6, 0.6, "recHits");
    histos->fill1DHistByType(
        sterr, "hRHsterr", "Estimated Error on Strip Measurement", idrec, 120, -0.05, 0.25, "recHits");
    histos->fillProfile(
        chamberSerial(idrec), rHSumQ, "hRHSumQProfile", "Sum 3x3 recHit Charge", 601, -0.5, 600.5, 0, 4000, "recHits");
    histos->fillProfile(
        chamberSerial(idrec), rHtime, "hRHTimingProfile", "recHit Timing", 601, -0.5, 600.5, -11, 11, "recHits");
    if (detailedAnalysis) {
      if (kStation == 1 && (kRing == 1 || kRing == 4))
        histos->fill1DHistByLayer(rHSumQ, "hRHSumQ", "Sum 3x3 recHit Charge", idrec, 125, 0, 4000, "RHQByLayer");
      else
        histos->fill1DHistByLayer(rHSumQ, "hRHSumQ", "Sum 3x3 recHit Charge", idrec, 125, 0, 2000, "RHQByLayer");
      histos->fill1DHistByLayer(rHratioQ, "hRHRatioQ", "Charge Ratio (Ql+Qr)/Qt", idrec, 120, -0.1, 1.1, "RHQByLayer");
      histos->fill1DHistByLayer(rHtime, "hRHTiming", "recHit Timing", idrec, 200, -10, 10, "RHTimingByLayer");
      histos->fill2DHistByLayer(xreco,
                                yreco,
                                "hRHLocalXY",
                                "recHit Local Position",
                                idrec,
                                50,
                                -100.,
                                100.,
                                75,
                                -150.,
                                150.,
                                "RHLocalXYByLayer");
      histos->fill1DHistByLayer(
          sqrt(xxerr), "hRHxerr", "RecHit Error on Local X", idrec, 100, -0.1, 2, "RHErrorsByLayer");
      histos->fill1DHistByLayer(
          sqrt(yyerr), "hRHyerr", "RecHit Error on Local Y", idrec, 100, -0.1, 2, "RHErrorsByLayer");
      histos->fill1DHistByType(
          stpos, "hRHstpos", "Reconstructed Position on Strip", idrec, 120, -0.6, 0.6, "RHStripPosByLayer");
      histos->fill1DHistByType(
          sterr, "hRHsterr", "Estimated Error on Strip Measurement", idrec, 120, -0.05, 0.25, "RHStripPosByLayer");
    }

  }  //end rechit loop

  if (nRecHits == 0)
    nRecHits = -1;

  histos->fill1DHist(nRecHits, "hRHnrechits", "recHits per Event (all chambers)", 201, -0.5, 200.5, "recHits");
}

// ==============================================
//
// look at SIMHITS
//
// ==============================================

void CSCValidation::doSimHits(edm::Handle<CSCRecHit2DCollection> recHits, edm::Handle<PSimHitContainer> simHits) {
  CSCRecHit2DCollection::const_iterator dSHrecIter;
  for (dSHrecIter = recHits->begin(); dSHrecIter != recHits->end(); dSHrecIter++) {
    CSCDetId idrec = (CSCDetId)(*dSHrecIter).cscDetId();
    LocalPoint rhitlocal = (*dSHrecIter).localPosition();
    float xreco = rhitlocal.x();
    float yreco = rhitlocal.y();
    float xError = sqrt((*dSHrecIter).localPositionError().xx());
    float yError = sqrt((*dSHrecIter).localPositionError().yy());
    float simHitXres = -99;
    float simHitYres = -99;
    float xPull = -99;
    float yPull = -99;
    float mindiffX = 99;
    float mindiffY = 10;
    // If MC, find closest muon simHit to check resolution:
    PSimHitContainer::const_iterator dSHsimIter;
    for (dSHsimIter = simHits->begin(); dSHsimIter != simHits->end(); dSHsimIter++) {
      // Get DetID for this simHit:
      CSCDetId sId = (CSCDetId)(*dSHsimIter).detUnitId();
      // Check if the simHit detID matches that of current recHit
      // and make sure it is a muon hit:
      if (sId == idrec && abs((*dSHsimIter).particleType()) == 13) {
        // Get the position of this simHit in local coordinate system:
        LocalPoint sHitlocal = (*dSHsimIter).localPosition();
        // Now we need to make reasonably sure that this simHit is
        // responsible for this recHit:
        if ((sHitlocal.x() - xreco) < mindiffX && (sHitlocal.y() - yreco) < mindiffY) {
          simHitXres = (sHitlocal.x() - xreco);
          simHitYres = (sHitlocal.y() - yreco);
          mindiffX = (sHitlocal.x() - xreco);
          xPull = simHitXres / xError;
          yPull = simHitYres / yError;
        }
      }
    }

    histos->fill1DHistByType(
        simHitXres, "hSimXResid", "SimHitX - Reconstructed X", idrec, 100, -1.0, 1.0, "Resolution");
    histos->fill1DHistByType(
        simHitYres, "hSimYResid", "SimHitY - Reconstructed Y", idrec, 100, -5.0, 5.0, "Resolution");
    histos->fill1DHistByType(xPull, "hSimXPull", "Local X Pulls", idrec, 100, -5.0, 5.0, "Resolution");
    histos->fill1DHistByType(yPull, "hSimYPull", "Local Y Pulls", idrec, 100, -5.0, 5.0, "Resolution");
  }
}

// ==============================================
//
// look at SEGMENTs
//
// ===============================================

void CSCValidation::doSegments(edm::Handle<CSCSegmentCollection> cscSegments, edm::ESHandle<CSCGeometry> cscGeom) {
  // get CSC segment collection
  int nSegments = cscSegments->size();

  // -----------------------
  // loop over segments
  // -----------------------
  for (CSCSegmentCollection::const_iterator dSiter = cscSegments->begin(); dSiter != cscSegments->end(); dSiter++) {
    //
    CSCDetId id = (CSCDetId)(*dSiter).cscDetId();
    int kEndcap = id.endcap();
    int kRing = id.ring();
    int kStation = id.station();
    int kChamber = id.chamber();

    //
    float chisq = (*dSiter).chi2();
    int nhits = (*dSiter).nRecHits();
    int nDOF = 2 * nhits - 4;
    double chisqProb = ChiSquaredProbability((double)chisq, nDOF);
    LocalPoint localPos = (*dSiter).localPosition();
    float segX = localPos.x();
    float segY = localPos.y();
    LocalVector segDir = (*dSiter).localDirection();
    double theta = segDir.theta();

    // global transformation
    float globX = 0.;
    float globY = 0.;
    float globTheta = 0.;
    float globPhi = 0.;
    const CSCChamber* cscchamber = cscGeom->chamber(id);
    if (cscchamber) {
      GlobalPoint globalPosition = cscchamber->toGlobal(localPos);
      globX = globalPosition.x();
      globY = globalPosition.y();
      GlobalVector globalDirection = cscchamber->toGlobal(segDir);
      globTheta = globalDirection.theta();
      globPhi = globalDirection.phi();
    }

    // Fill segment position branch
    if (writeTreeToFile && segTreeCount < 1500000) {
      histos->fillSegmentTree(segX, segY, globX, globY, kEndcap, kStation, kRing, kChamber);
      segTreeCount++;
    }

    // Fill histos
    histos->fill2DHistByStation(globX,
                                globY,
                                "hSGlobal",
                                "Segment Global Positions;global x (cm)",
                                id,
                                100,
                                -800.,
                                800.,
                                100,
                                -800.,
                                800.,
                                "Segments");
    histos->fill1DHistByType(nhits, "hSnHits", "N hits on Segments", id, 8, -0.5, 7.5, "Segments");
    histos->fill1DHistByType(theta, "hSTheta", "local theta segments", id, 128, -3.2, 3.2, "Segments");
    histos->fill1DHistByType((chisq / nDOF), "hSChiSq", "segments chi-squared/ndof", id, 110, -0.05, 10.5, "Segments");
    histos->fill1DHistByType(
        chisqProb, "hSChiSqProb", "segments chi-squared probability", id, 110, -0.05, 1.05, "Segments");
    histos->fill1DHist(globTheta, "hSGlobalTheta", "segment global theta", 128, 0, 3.2, "Segments");
    histos->fill1DHist(globPhi, "hSGlobalPhi", "segment global phi", 128, -3.2, 3.2, "Segments");
    histos->fillProfile(
        chamberSerial(id), nhits, "hSnHitsProfile", "N hits on Segments", 601, -0.5, 600.5, -0.5, 7.5, "Segments");
    if (detailedAnalysis) {
      histos->fill1DHistByChamber(nhits, "hSnHits", "N hits on Segments", id, 8, -0.5, 7.5, "HitsOnSegmentByChamber");
      histos->fill1DHistByChamber(theta, "hSTheta", "local theta segments", id, 128, -3.2, 3.2, "DetailedSegments");
      histos->fill1DHistByChamber(
          (chisq / nDOF), "hSChiSq", "segments chi-squared/ndof", id, 110, -0.05, 10.5, "SegChi2ByChamber");
      histos->fill1DHistByChamber(
          chisqProb, "hSChiSqProb", "segments chi-squared probability", id, 110, -0.05, 1.05, "SegChi2ByChamber");
    }

  }  // end segment loop

  if (nSegments == 0)
    nSegments = -1;

  histos->fill1DHist(nSegments, "hSnSegments", "Segments per Event", 31, -0.5, 30.5, "Segments");
}

// ==============================================
//
// look at hit Resolution
//
// ===============================================

void CSCValidation::doResolution(edm::Handle<CSCSegmentCollection> cscSegments, edm::ESHandle<CSCGeometry> cscGeom) {
  for (CSCSegmentCollection::const_iterator dSiter = cscSegments->begin(); dSiter != cscSegments->end(); dSiter++) {
    CSCDetId id = (CSCDetId)(*dSiter).cscDetId();

    //
    // try to get the CSC recHits that contribute to this segment.
    std::vector<CSCRecHit2D> theseRecHits = (*dSiter).specificRecHits();
    int nRH = (*dSiter).nRecHits();
    CLHEP::HepMatrix sp(6, 1);
    CLHEP::HepMatrix se(6, 1);
    for (std::vector<CSCRecHit2D>::const_iterator iRH = theseRecHits.begin(); iRH != theseRecHits.end(); iRH++) {
      CSCDetId idRH = (CSCDetId)(*iRH).cscDetId();
      int kRing = idRH.ring();
      int kStation = idRH.station();
      int kLayer = idRH.layer();

      // Find the strip containing this hit
      int centerid = iRH->nStrips() / 2;
      int centerStrip = iRH->channels(centerid);

      // If this segment has 6 hits, find the position of each hit on the strip in units of stripwidth and store values
      if (nRH == 6) {
        float stpos = (*iRH).positionWithinStrip();
        se(kLayer, 1) = (*iRH).errorWithinStrip();
        // Take into account half-strip staggering of layers (ME1/1 has no staggering)
        if (kStation == 1 && (kRing == 1 || kRing == 4))
          sp(kLayer, 1) = stpos + centerStrip;
        else {
          if (kLayer == 1 || kLayer == 3 || kLayer == 5)
            sp(kLayer, 1) = stpos + centerStrip;
          if (kLayer == 2 || kLayer == 4 || kLayer == 6)
            sp(kLayer, 1) = stpos - 0.5 + centerStrip;
        }
      }
    }

    float residual = -99;
    float pull = -99;
    // Fit all points except layer 3, then compare expected value for layer 3 to reconstructed value
    if (nRH == 6) {
      float expected = fitX(sp, se);
      residual = expected - sp(3, 1);
      pull = residual / se(3, 1);
    }

    // Fill histos
    histos->fill1DHistByType(
        residual, "hSResid", "Fitted Position on Strip - Reconstructed for Layer 3", id, 100, -0.5, 0.5, "Resolution");
    histos->fill1DHistByType(pull, "hSStripPosPull", "Strip Measurement Pulls", id, 100, -5.0, 5.0, "Resolution");
    histos->fillProfile(chamberSerial(id),
                        residual,
                        "hSResidProfile",
                        "Fitted Position on Strip - Reconstructed for Layer 3",
                        601,
                        -0.5,
                        600.5,
                        -0.5,
                        0.5,
                        "Resolution");
    if (detailedAnalysis) {
      histos->fill1DHistByChamber(residual,
                                  "hSResid",
                                  "Fitted Position on Strip - Reconstructed for Layer 3",
                                  id,
                                  100,
                                  -0.5,
                                  0.5,
                                  "DetailedResolution");
      histos->fill1DHistByChamber(pull, "hSStripPosPull", "Strip Measurement Pulls", id, 100, -5.0, 5.0, "Resolution");
    }
  }
}

// ==============================================
//
// look at Standalone Muons
//
// ==============================================

void CSCValidation::doStandalone(Handle<reco::TrackCollection> saMuons) {
  int nSAMuons = saMuons->size();
  histos->fill1DHist(nSAMuons, "trNSAMuons", "N Standalone Muons per Event", 6, -0.5, 5.5, "STAMuons");

  for (reco::TrackCollection::const_iterator muon = saMuons->begin(); muon != saMuons->end(); ++muon) {
    float preco = muon->p();
    float ptreco = muon->pt();
    int n = muon->recHitsSize();
    float chi2 = muon->chi2();
    float normchi2 = muon->normalizedChi2();

    // loop over hits
    int nDTHits = 0;
    int nCSCHits = 0;
    int nCSCHitsp = 0;
    int nCSCHitsm = 0;
    int nRPCHits = 0;
    int nRPCHitsp = 0;
    int nRPCHitsm = 0;
    int np = 0;
    int nm = 0;
    std::vector<CSCDetId> staChambers;
    for (trackingRecHit_iterator hit = muon->recHitsBegin(); hit != muon->recHitsEnd(); ++hit) {
      const DetId detId((*hit)->geographicalId());
      if (detId.det() == DetId::Muon) {
        if (detId.subdetId() == MuonSubdetId::RPC) {
          RPCDetId rpcId(detId.rawId());
          nRPCHits++;
          if (rpcId.region() == 1) {
            nRPCHitsp++;
            np++;
          }
          if (rpcId.region() == -1) {
            nRPCHitsm++;
            nm++;
          }
        }
        if (detId.subdetId() == MuonSubdetId::DT) {
          nDTHits++;
        } else if (detId.subdetId() == MuonSubdetId::CSC) {
          CSCDetId cscId(detId.rawId());
          staChambers.push_back(detId.rawId());
          nCSCHits++;
          if (cscId.endcap() == 1) {
            nCSCHitsp++;
            np++;
          }
          if (cscId.endcap() == 2) {
            nCSCHitsm++;
            nm++;
          }
        }
      }
    }

    GlobalPoint innerPnt(muon->innerPosition().x(), muon->innerPosition().y(), muon->innerPosition().z());
    GlobalPoint outerPnt(muon->outerPosition().x(), muon->outerPosition().y(), muon->outerPosition().z());
    GlobalVector innerKin(muon->innerMomentum().x(), muon->innerMomentum().y(), muon->innerMomentum().z());
    GlobalVector outerKin(muon->outerMomentum().x(), muon->outerMomentum().y(), muon->outerMomentum().z());
    GlobalVector deltaPnt = innerPnt - outerPnt;
    double crudeLength = deltaPnt.mag();
    double deltaPhi = innerPnt.phi() - outerPnt.phi();
    double innerGlobalPolarAngle = innerKin.theta();
    double outerGlobalPolarAngle = outerKin.theta();

    // fill histograms
    histos->fill1DHist(n, "trN", "N hits on a STA Muon Track", 51, -0.5, 50.5, "STAMuons");
    if (np != 0)
      histos->fill1DHist(np, "trNp", "N hits on a STA Muon Track (plus endcap)", 51, -0.5, 50.5, "STAMuons");
    if (nm != 0)
      histos->fill1DHist(nm, "trNm", "N hits on a STA Muon Track (minus endcap)", 51, -0.5, 50.5, "STAMuons");
    histos->fill1DHist(nDTHits, "trNDT", "N DT hits on a STA Muon Track", 51, -0.5, 50.5, "STAMuons");
    histos->fill1DHist(nCSCHits, "trNCSC", "N CSC hits on a STA Muon Track", 51, -0.5, 50.5, "STAMuons");
    if (nCSCHitsp != 0)
      histos->fill1DHist(nCSCHitsp, "trNCSCp", "N CSC hits on a STA Muon Track (+ endcap)", 51, -0.5, 50.5, "STAMuons");
    if (nCSCHitsm != 0)
      histos->fill1DHist(nCSCHitsm, "trNCSCm", "N CSC hits on a STA Muon Track (- endcap)", 51, -0.5, 50.5, "STAMuons");
    histos->fill1DHist(nRPCHits, "trNRPC", "N RPC hits on a STA Muon Track", 51, -0.5, 50.5, "STAMuons");
    if (nRPCHitsp != 0)
      histos->fill1DHist(nRPCHitsp, "trNRPCp", "N RPC hits on a STA Muon Track (+ endcap)", 51, -0.5, 50.5, "STAMuons");
    if (nRPCHitsm != 0)
      histos->fill1DHist(nRPCHitsm, "trNRPCm", "N RPC hits on a STA Muon Track (- endcap)", 51, -0.5, 50.5, "STAMuons");
    histos->fill1DHist(preco, "trP", "STA Muon Momentum", 100, 0, 300, "STAMuons");
    histos->fill1DHist(ptreco, "trPT", "STA Muon pT", 100, 0, 40, "STAMuons");
    histos->fill1DHist(chi2, "trChi2", "STA Muon Chi2", 100, 0, 200, "STAMuons");
    histos->fill1DHist(normchi2, "trNormChi2", "STA Muon Normalized Chi2", 100, 0, 10, "STAMuons");
    histos->fill1DHist(crudeLength, "trLength", "Straight Line Length of STA Muon", 120, 0., 2400., "STAMuons");
    histos->fill1DHist(
        deltaPhi, "trDeltaPhi", "Delta-Phi Between Inner and Outer STA Muon Pos.", 100, -0.5, 0.5, "STAMuons");
    histos->fill1DHist(
        innerGlobalPolarAngle, "trInnerPolar", "Polar Angle of Inner P Vector (STA muons)", 128, 0, 3.2, "STAMuons");
    histos->fill1DHist(
        outerGlobalPolarAngle, "trOuterPolar", "Polar Angle of Outer P Vector (STA muons)", 128, 0, 3.2, "STAMuons");
    histos->fill1DHist(innerPnt.phi(), "trInnerPhi", "Phi of Inner Position (STA muons)", 256, -3.2, 3.2, "STAMuons");
    histos->fill1DHist(outerPnt.phi(), "trOuterPhi", "Phi of Outer Position (STA muons)", 256, -3.2, 3.2, "STAMuons");
  }
}

//--------------------------------------------------------------
// Compute a serial number for the chamber.
// This is useful when filling histograms and working with arrays.
//--------------------------------------------------------------
int CSCValidation::chamberSerial(CSCDetId id) {
  int st = id.station();
  int ri = id.ring();
  int ch = id.chamber();
  int ec = id.endcap();
  int kSerial = ch;
  if (st == 1 && ri == 1)
    kSerial = ch;
  if (st == 1 && ri == 2)
    kSerial = ch + 36;
  if (st == 1 && ri == 3)
    kSerial = ch + 72;
  if (st == 1 && ri == 4)
    kSerial = ch;
  if (st == 2 && ri == 1)
    kSerial = ch + 108;
  if (st == 2 && ri == 2)
    kSerial = ch + 126;
  if (st == 3 && ri == 1)
    kSerial = ch + 162;
  if (st == 3 && ri == 2)
    kSerial = ch + 180;
  if (st == 4 && ri == 1)
    kSerial = ch + 216;
  if (st == 4 && ri == 2)
    kSerial = ch + 234;
  if (ec == 2)
    kSerial = kSerial + 300;
  return kSerial;
}

//--------------------------------------------------------------
// Compute a serial number for the ring.
// This is useful when filling histograms and working with arrays.
//--------------------------------------------------------------
int CSCValidation::ringSerial(CSCDetId id) {
  int st = id.station();
  int ri = id.ring();
  int ec = id.endcap();
  int kSerial = 0;
  if (st == 1 && ri == 1)
    kSerial = ri;
  if (st == 1 && ri == 2)
    kSerial = ri;
  if (st == 1 && ri == 3)
    kSerial = ri;
  if (st == 1 && ri == 4)
    kSerial = 1;
  if (st == 2)
    kSerial = ri + 3;
  if (st == 3)
    kSerial = ri + 5;
  if (st == 4)
    kSerial = ri + 7;
  if (ec == 2)
    kSerial = kSerial * (-1);
  return kSerial;
}

//-------------------------------------------------------------------------------------
// Fits a straight line to a set of 5 points with errors.  Functions assumes 6 points
// and removes hit in layer 3.  It then returns the expected position value in layer 3
// based on the fit.
//-------------------------------------------------------------------------------------
float CSCValidation::fitX(const CLHEP::HepMatrix& points, const CLHEP::HepMatrix& errors) {
  float S = 0;
  float Sx = 0;
  float Sy = 0;
  float Sxx = 0;
  float Sxy = 0;
  float sigma2 = 0;

  for (int i = 1; i < 7; i++) {
    if (i != 3) {
      sigma2 = errors(i, 1) * errors(i, 1);
      S = S + (1 / sigma2);
      Sy = Sy + (points(i, 1) / sigma2);
      Sx = Sx + ((i) / sigma2);
      Sxx = Sxx + (i * i) / sigma2;
      Sxy = Sxy + (((i)*points(i, 1)) / sigma2);
    }
  }

  float delta = S * Sxx - Sx * Sx;
  float intercept = (Sxx * Sy - Sx * Sxy) / delta;
  float slope = (S * Sxy - Sx * Sy) / delta;

  //float chi = 0;
  //float chi2 = 0;

  // calculate chi2 (not currently used)
  //for (int i=1;i<7;i++){
  //  chi = (points(i,1) - intercept - slope*i)/(errors(i,1));
  //  chi2 = chi2 + chi*chi;
  //}

  return (intercept + slope * 3);
}

//----------------------------------------------------------------------------
// Calculate basic efficiencies for recHits and Segments
// Author: S. Stoynev
//----------------------------------------------------------------------------

void CSCValidation::doEfficiencies(edm::Handle<CSCWireDigiCollection> wires,
                                   edm::Handle<CSCStripDigiCollection> strips,
                                   edm::Handle<CSCRecHit2DCollection> recHits,
                                   edm::Handle<CSCSegmentCollection> cscSegments,
                                   edm::ESHandle<CSCGeometry> cscGeom) {
  bool allWires[2][4][4][36][6];
  bool allStrips[2][4][4][36][6];
  bool AllRecHits[2][4][4][36][6];
  bool AllSegments[2][4][4][36];

  //bool MultiSegments[2][4][4][36];
  for (int iE = 0; iE < 2; iE++) {
    for (int iS = 0; iS < 4; iS++) {
      for (int iR = 0; iR < 4; iR++) {
        for (int iC = 0; iC < 36; iC++) {
          AllSegments[iE][iS][iR][iC] = false;
          //MultiSegments[iE][iS][iR][iC] = false;
          for (int iL = 0; iL < 6; iL++) {
            allWires[iE][iS][iR][iC][iL] = false;
            allStrips[iE][iS][iR][iC][iL] = false;
            AllRecHits[iE][iS][iR][iC][iL] = false;
          }
        }
      }
    }
  }

  if (useDigis) {
    // Wires
    for (CSCWireDigiCollection::DigiRangeIterator dWDiter = wires->begin(); dWDiter != wires->end(); dWDiter++) {
      CSCDetId idrec = (CSCDetId)(*dWDiter).first;
      std::vector<CSCWireDigi>::const_iterator wireIter = (*dWDiter).second.first;
      std::vector<CSCWireDigi>::const_iterator lWire = (*dWDiter).second.second;
      for (; wireIter != lWire; ++wireIter) {
        allWires[idrec.endcap() - 1][idrec.station() - 1][idrec.ring() - 1][idrec.chamber() - 1][idrec.layer() - 1] =
            true;
        break;
      }
    }

    //---- STRIPS
    for (CSCStripDigiCollection::DigiRangeIterator dSDiter = strips->begin(); dSDiter != strips->end(); dSDiter++) {
      CSCDetId idrec = (CSCDetId)(*dSDiter).first;
      std::vector<CSCStripDigi>::const_iterator stripIter = (*dSDiter).second.first;
      std::vector<CSCStripDigi>::const_iterator lStrip = (*dSDiter).second.second;
      for (; stripIter != lStrip; ++stripIter) {
        std::vector<int> myADCVals = stripIter->getADCCounts();
        bool thisStripFired = false;
        float thisPedestal = 0.5 * (float)(myADCVals[0] + myADCVals[1]);
        float threshold = 13.3;
        float diff = 0.;
        for (unsigned int iCount = 0; iCount < myADCVals.size(); iCount++) {
          diff = (float)myADCVals[iCount] - thisPedestal;
          if (diff > threshold) {
            thisStripFired = true;
            break;
          }
        }
        if (thisStripFired) {
          allStrips[idrec.endcap() - 1][idrec.station() - 1][idrec.ring() - 1][idrec.chamber() - 1][idrec.layer() - 1] =
              true;
          break;
        }
      }
    }
  }

  // Rechits
  for (CSCRecHit2DCollection::const_iterator recEffIt = recHits->begin(); recEffIt != recHits->end(); recEffIt++) {
    //CSCDetId idrec = (CSCDetId)(*recIt).cscDetId();
    CSCDetId idrec = (CSCDetId)(*recEffIt).cscDetId();
    AllRecHits[idrec.endcap() - 1][idrec.station() - 1][idrec.ring() - 1][idrec.chamber() - 1][idrec.layer() - 1] =
        true;
  }

  std::vector<unsigned int> seg_ME2(2, 0);
  std::vector<unsigned int> seg_ME3(2, 0);
  std::vector<std::pair<CSCDetId, CSCSegment> > theSegments(4);
  // Segments
  for (CSCSegmentCollection::const_iterator segEffIt = cscSegments->begin(); segEffIt != cscSegments->end();
       segEffIt++) {
    CSCDetId idseg = (CSCDetId)(*segEffIt).cscDetId();
    //if(AllSegments[idrec.endcap() -1][idrec.station() -1][idrec.ring() -1][idrec.chamber()]){
    //MultiSegments[idrec.endcap() -1][idrec.station() -1][idrec.ring() -1][idrec.chamber()] = true;
    //}
    AllSegments[idseg.endcap() - 1][idseg.station() - 1][idseg.ring() - 1][idseg.chamber() - 1] = true;
    // "Intrinsic" efficiency measurement relies on "good" segment extrapolation - we need the pre-selection below
    // station 2 "good" segment will be used for testing efficiencies in ME1 and ME3
    // station 3 "good" segment will be used for testing efficiencies in ME2 and ME4
    if (2 == idseg.station() || 3 == idseg.station()) {
      unsigned int seg_tmp;
      if (2 == idseg.station()) {
        ++seg_ME2[idseg.endcap() - 1];
        seg_tmp = seg_ME2[idseg.endcap() - 1];
      } else {
        ++seg_ME3[idseg.endcap() - 1];
        seg_tmp = seg_ME3[idseg.endcap() - 1];
      }
      // is the segment good
      if (1 == seg_tmp && 6 == (*segEffIt).nRecHits() && (*segEffIt).chi2() / (*segEffIt).degreesOfFreedom() < 3.) {
        std::pair<CSCDetId, CSCSegment> specSeg = make_pair((CSCDetId)(*segEffIt).cscDetId(), *segEffIt);
        theSegments[2 * (idseg.endcap() - 1) + (idseg.station() - 2)] = specSeg;
      }
    }
    /*
    if(2==idseg.station()){
    ++seg_ME2[idseg.endcap() -1];
       if(1==seg_ME2[idseg.endcap() -1] && 6==(*segEffIt).nRecHits() && (*segEffIt).chi2()/(*segEffIt).degreesOfFreedom()<3.){
           std::pair <CSCDetId, CSCSegment> specSeg = make_pair( (CSCDetId)(*segEffIt).cscDetId(),*segEffIt);
           theSegments[2*(idseg.endcap()-1)+(idseg.station() -2)] = specSeg;
       }
    }
    else if(3==idseg.station()){
    ++seg_ME3[idseg.endcap() -1];
    if(1==seg_ME3[idseg.endcap() -1] && 6==(*segEffIt).nRecHits() && (*segEffIt).chi2()/(*segEffIt).degreesOfFreedom()<3.){
         std::pair <CSCDetId, CSCSegment> specSeg = make_pair( (CSCDetId)(*segEffIt).cscDetId(),*segEffIt);
     theSegments[2*(idseg.endcap()-1)+(idseg.station() -2)] = specSeg;
       }
    }
    */
  }
  // Simple efficiency calculations
  for (int iE = 0; iE < 2; iE++) {
    for (int iS = 0; iS < 4; iS++) {
      for (int iR = 0; iR < 4; iR++) {
        for (int iC = 0; iC < 36; iC++) {
          int NumberOfLayers = 0;
          for (int iL = 0; iL < 6; iL++) {
            if (AllRecHits[iE][iS][iR][iC][iL]) {
              NumberOfLayers++;
            }
          }
          int bin = 0;
          if (iS == 0)
            bin = iR + 1 + (iE * 10);
          else
            bin = (iS + 1) * 2 + (iR + 1) + (iE * 10);
          if (NumberOfLayers > 1) {
            //if(!(MultiSegments[iE][iS][iR][iC])){
            if (AllSegments[iE][iS][iR][iC]) {
              //---- Efficient segment events
              //hSSTE->AddBinContent(bin);
              hSSTE->Fill(bin - 0.5);
              if (NumberOfLayers > 3)
                hSSTETight->Fill(bin - 0.5);
            }
            //---- All segment events (normalization)
            //hSSTE->AddBinContent(20+bin);
            hSSTE->Fill(20 + bin - 0.5);
            if (NumberOfLayers > 3)
              hSSTETight->Fill(20 + bin - 0.5);
            //}            //}
          }
          if (AllSegments[iE][iS][iR][iC]) {
            if (NumberOfLayers == 6) {
              //---- Efficient rechit events
              //hRHSTE->AddBinContent(bin);
              hRHSTE->Fill(bin - 0.5);
              hRHSTETight->Fill(bin - 0.5);
              ;
            }
            //---- All rechit events (normalization)
            //hRHSTE->AddBinContent(20+bin);
            hRHSTE->Fill(20 + bin - 0.5);
            if (NumberOfLayers > 3)
              hRHSTETight->Fill(20 + bin - 0.5);
            ;
          }
        }
      }
    }
  }

  // pick a segment only if there are no others in the station
  std::vector<std::pair<CSCDetId, CSCSegment>*> theSeg;
  if (1 == seg_ME2[0])
    theSeg.push_back(&theSegments[0]);
  if (1 == seg_ME3[0])
    theSeg.push_back(&theSegments[1]);
  if (1 == seg_ME2[1])
    theSeg.push_back(&theSegments[2]);
  if (1 == seg_ME3[1])
    theSeg.push_back(&theSegments[3]);

  // Needed for plots
  // at the end the chamber types will be numbered as 1 to 20
  // (ME-4/2, ME-4/1, -ME3/2, -ME3/1, ..., +ME3/1, +ME3/2, ME+4/1, ME+4/2 )
  std::map<std::string, float> chamberTypes;
  chamberTypes["ME1/a"] = 0.5;
  chamberTypes["ME1/b"] = 1.5;
  chamberTypes["ME1/2"] = 2.5;
  chamberTypes["ME1/3"] = 3.5;
  chamberTypes["ME2/1"] = 4.5;
  chamberTypes["ME2/2"] = 5.5;
  chamberTypes["ME3/1"] = 6.5;
  chamberTypes["ME3/2"] = 7.5;
  chamberTypes["ME4/1"] = 8.5;
  chamberTypes["ME4/2"] = 9.5;

  if (!theSeg.empty()) {
    std::map<int, GlobalPoint> extrapolatedPoint;
    std::map<int, GlobalPoint>::iterator it;
    const CSCGeometry::ChamberContainer& ChamberContainer = cscGeom->chambers();
    // Pick which chamber with which segment to test
    for (size_t nCh = 0; nCh < ChamberContainer.size(); nCh++) {
      const CSCChamber* cscchamber = ChamberContainer[nCh];
      std::pair<CSCDetId, CSCSegment>* thisSegment = nullptr;
      for (size_t iSeg = 0; iSeg < theSeg.size(); ++iSeg) {
        if (cscchamber->id().endcap() == theSeg[iSeg]->first.endcap()) {
          if (1 == cscchamber->id().station() || 3 == cscchamber->id().station()) {
            if (2 == theSeg[iSeg]->first.station()) {
              thisSegment = theSeg[iSeg];
            }
          } else if (2 == cscchamber->id().station() || 4 == cscchamber->id().station()) {
            if (3 == theSeg[iSeg]->first.station()) {
              thisSegment = theSeg[iSeg];
            }
          }
        }
      }
      // this chamber is to be tested with thisSegment
      if (thisSegment) {
        CSCSegment* seg = &(thisSegment->second);
        const CSCChamber* segChamber = cscGeom->chamber(thisSegment->first);
        LocalPoint localCenter(0., 0., 0);
        GlobalPoint cscchamberCenter = cscchamber->toGlobal(localCenter);
        // try to save some time (extrapolate a segment to a certain position only once)
        it = extrapolatedPoint.find(int(cscchamberCenter.z()));
        if (it == extrapolatedPoint.end()) {
          GlobalPoint segPos = segChamber->toGlobal(seg->localPosition());
          GlobalVector segDir = segChamber->toGlobal(seg->localDirection());
          double paramaterLine = lineParametrization(segPos.z(), cscchamberCenter.z(), segDir.z());
          double xExtrapolated = extrapolate1D(segPos.x(), segDir.x(), paramaterLine);
          double yExtrapolated = extrapolate1D(segPos.y(), segDir.y(), paramaterLine);
          GlobalPoint globP(xExtrapolated, yExtrapolated, cscchamberCenter.z());
          extrapolatedPoint[int(cscchamberCenter.z())] = globP;
        }
        // Where does the extrapolated point lie in the (tested) chamber local frame? Here:
        LocalPoint extrapolatedPointLocal = cscchamber->toLocal(extrapolatedPoint[int(cscchamberCenter.z())]);
        const CSCLayer* layer_p = cscchamber->layer(1);  //layer 1
        const CSCLayerGeometry* layerGeom = layer_p->geometry();
        const std::array<const float, 4>& layerBounds = layerGeom->parameters();
        float shiftFromEdge = 15.;  //cm
        float shiftFromDeadZone = 10.;
        // is the extrapolated point within a sensitive region
        bool pass = withinSensitiveRegion(extrapolatedPointLocal,
                                          layerBounds,
                                          cscchamber->id().station(),
                                          cscchamber->id().ring(),
                                          shiftFromEdge,
                                          shiftFromDeadZone);
        if (pass) {  // the extrapolation point of the segment lies within sensitive region of that chamber
          // how many rechit layers are there in the chamber?
          // 0 - maybe the muon died or is deflected at large angle? do not use that case
          // 1 - could be noise...
          // 2 or more - this is promissing; this is our definition of a reliable signal; use it below
          // is other definition better?
          int nRHLayers = 0;
          for (int iL = 0; iL < 6; ++iL) {
            if (AllRecHits[cscchamber->id().endcap() - 1][cscchamber->id().station() - 1][cscchamber->id().ring() - 1]
                          [cscchamber->id().chamber() - 1][iL]) {
              ++nRHLayers;
            }
          }
          //std::cout<<" nRHLayers = "<<nRHLayers<<std::endl;
          float verticalScale = chamberTypes[cscchamber->specs()->chamberTypeName()];
          if (cscchamberCenter.z() < 0) {
            verticalScale = -verticalScale;
          }
          verticalScale += 10.5;
          hSensitiveAreaEvt->Fill(float(cscchamber->id().chamber()), verticalScale);
          if (nRHLayers > 1) {  // this chamber contains a reliable signal
            //chamberTypes[cscchamber->specs()->chamberTypeName()];
            // "intrinsic" efficiencies
            //std::cout<<" verticalScale = "<<verticalScale<<" chType = "<<cscchamber->specs()->chamberTypeName()<<std::endl;
            // this is the denominator forr all efficiencies
            hEffDenominator->Fill(float(cscchamber->id().chamber()), verticalScale);
            if (nRHLayers > 3)
              hEffDenominatorTight->Fill(float(cscchamber->id().chamber()), verticalScale);
            // Segment efficiency
            if (AllSegments[cscchamber->id().endcap() - 1][cscchamber->id().station() - 1][cscchamber->id().ring() - 1]
                           [cscchamber->id().chamber() - 1]) {
              hSSTE2->Fill(float(cscchamber->id().chamber()), float(verticalScale));
              if (nRHLayers > 3)
                hSSTE2Tight->Fill(float(cscchamber->id().chamber()), float(verticalScale));
            }

            for (int iL = 0; iL < 6; ++iL) {
              float weight = 1. / 6.;
              // one shold account for the weight in the efficiency...
              // Rechit efficiency
              if (AllRecHits[cscchamber->id().endcap() - 1][cscchamber->id().station() - 1][cscchamber->id().ring() - 1]
                            [cscchamber->id().chamber() - 1][iL]) {
                hRHSTE2->Fill(float(cscchamber->id().chamber()), float(verticalScale), weight);
                if (nRHLayers > 3)
                  hRHSTE2Tight->Fill(float(cscchamber->id().chamber()), float(verticalScale), weight);
              }
              if (useDigis) {
                // Wire efficiency
                if (allWires[cscchamber->id().endcap() - 1][cscchamber->id().station() - 1][cscchamber->id().ring() - 1]
                            [cscchamber->id().chamber() - 1][iL]) {
                  // one shold account for the weight in the efficiency...
                  hWireSTE2->Fill(float(cscchamber->id().chamber()), float(verticalScale), weight);
                  if (nRHLayers > 3)
                    hWireSTE2Tight->Fill(float(cscchamber->id().chamber()), float(verticalScale), weight);
                }
                // Strip efficiency
                if (allStrips[cscchamber->id().endcap() - 1][cscchamber->id().station() - 1]
                             [cscchamber->id().ring() - 1][cscchamber->id().chamber() - 1][iL]) {
                  // one shold account for the weight in the efficiency...
                  hStripSTE2->Fill(float(cscchamber->id().chamber()), float(verticalScale), weight);
                  if (nRHLayers > 3)
                    hStripSTE2Tight->Fill(float(cscchamber->id().chamber()), float(verticalScale), weight);
                }
              }
            }
          }
        }
      }
    }
  }
  //
}

void CSCValidation::getEfficiency(float bin, float Norm, std::vector<float>& eff) {
  //---- Efficiency with binomial error
  float Efficiency = 0.;
  float EffError = 0.;
  if (fabs(Norm) > 0.000000001) {
    Efficiency = bin / Norm;
    if (bin < Norm) {
      EffError = sqrt((1. - Efficiency) * Efficiency / Norm);
    }
  }
  eff[0] = Efficiency;
  eff[1] = EffError;
}

void CSCValidation::histoEfficiency(TH1F* readHisto, TH1F* writeHisto) {
  std::vector<float> eff(2);
  int Nbins = readHisto->GetSize() - 2;  //without underflows and overflows
  std::vector<float> bins(Nbins);
  std::vector<float> Efficiency(Nbins);
  std::vector<float> EffError(Nbins);
  float Num = 1;
  float Den = 1;
  for (int i = 0; i < 20; i++) {
    Num = readHisto->GetBinContent(i + 1);
    Den = readHisto->GetBinContent(i + 21);
    getEfficiency(Num, Den, eff);
    Efficiency[i] = eff[0];
    EffError[i] = eff[1];
    writeHisto->SetBinContent(i + 1, Efficiency[i]);
    writeHisto->SetBinError(i + 1, EffError[i]);
  }
}

bool CSCValidation::withinSensitiveRegion(LocalPoint localPos,
                                          const std::array<const float, 4>& layerBounds,
                                          int station,
                                          int ring,
                                          float shiftFromEdge,
                                          float shiftFromDeadZone) {
  //---- check if it is in a good local region (sensitive area - geometrical and HV boundaries excluded)
  bool pass = false;

  float y_center = 0.;
  double yUp = layerBounds[3] + y_center;
  double yDown = -layerBounds[3] + y_center;
  double xBound1Shifted = layerBounds[0] - shiftFromEdge;  //
  double xBound2Shifted = layerBounds[1] - shiftFromEdge;  //
  double lineSlope = (yUp - yDown) / (xBound2Shifted - xBound1Shifted);
  double lineConst = yUp - lineSlope * xBound2Shifted;
  double yBorder = lineSlope * abs(localPos.x()) + lineConst;

  //bool withinChamberOnly = false;// false = "good region"; true - boundaries only
  std::vector<float> deadZoneCenter(6);
  float cutZone = shiftFromDeadZone;  //cm
  //---- hardcoded... not good
  if (station > 1 && station < 5) {
    if (2 == ring) {
      deadZoneCenter[0] = -162.48;
      deadZoneCenter[1] = -81.8744;
      deadZoneCenter[2] = -21.18165;
      deadZoneCenter[3] = 39.51105;
      deadZoneCenter[4] = 100.2939;
      deadZoneCenter[5] = 160.58;

      if (localPos.y() > yBorder &&
          ((localPos.y() > deadZoneCenter[0] + cutZone && localPos.y() < deadZoneCenter[1] - cutZone) ||
           (localPos.y() > deadZoneCenter[1] + cutZone && localPos.y() < deadZoneCenter[2] - cutZone) ||
           (localPos.y() > deadZoneCenter[2] + cutZone && localPos.y() < deadZoneCenter[3] - cutZone) ||
           (localPos.y() > deadZoneCenter[3] + cutZone && localPos.y() < deadZoneCenter[4] - cutZone) ||
           (localPos.y() > deadZoneCenter[4] + cutZone && localPos.y() < deadZoneCenter[5] - cutZone))) {
        pass = true;
      }
    } else if (1 == ring) {
      if (2 == station) {
        deadZoneCenter[0] = -95.80;
        deadZoneCenter[1] = -27.47;
        deadZoneCenter[2] = 33.67;
        deadZoneCenter[3] = 90.85;
      } else if (3 == station) {
        deadZoneCenter[0] = -89.305;
        deadZoneCenter[1] = -39.705;
        deadZoneCenter[2] = 20.195;
        deadZoneCenter[3] = 77.395;
      } else if (4 == station) {
        deadZoneCenter[0] = -75.645;
        deadZoneCenter[1] = -26.055;
        deadZoneCenter[2] = 23.855;
        deadZoneCenter[3] = 70.575;
      }
      if (localPos.y() > yBorder &&
          ((localPos.y() > deadZoneCenter[0] + cutZone && localPos.y() < deadZoneCenter[1] - cutZone) ||
           (localPos.y() > deadZoneCenter[1] + cutZone && localPos.y() < deadZoneCenter[2] - cutZone) ||
           (localPos.y() > deadZoneCenter[2] + cutZone && localPos.y() < deadZoneCenter[3] - cutZone))) {
        pass = true;
      }
    }
  } else if (1 == station) {
    if (3 == ring) {
      deadZoneCenter[0] = -83.155;
      deadZoneCenter[1] = -22.7401;
      deadZoneCenter[2] = 27.86665;
      deadZoneCenter[3] = 81.005;
      if (localPos.y() > yBorder &&
          ((localPos.y() > deadZoneCenter[0] + cutZone && localPos.y() < deadZoneCenter[1] - cutZone) ||
           (localPos.y() > deadZoneCenter[1] + cutZone && localPos.y() < deadZoneCenter[2] - cutZone) ||
           (localPos.y() > deadZoneCenter[2] + cutZone && localPos.y() < deadZoneCenter[3] - cutZone))) {
        pass = true;
      }
    } else if (2 == ring) {
      deadZoneCenter[0] = -86.285;
      deadZoneCenter[1] = -32.88305;
      deadZoneCenter[2] = 32.867423;
      deadZoneCenter[3] = 88.205;
      if (localPos.y() > (yBorder) &&
          ((localPos.y() > deadZoneCenter[0] + cutZone && localPos.y() < deadZoneCenter[1] - cutZone) ||
           (localPos.y() > deadZoneCenter[1] + cutZone && localPos.y() < deadZoneCenter[2] - cutZone) ||
           (localPos.y() > deadZoneCenter[2] + cutZone && localPos.y() < deadZoneCenter[3] - cutZone))) {
        pass = true;
      }
    } else if (1 == ring) {  // ME1/1b
      deadZoneCenter[0] = -31.5;
      deadZoneCenter[1] = 86.0;
      if (localPos.y() > (yBorder) &&
          (localPos.y() > deadZoneCenter[0] && localPos.y() < deadZoneCenter[1] - cutZone)) {
        pass = true;
      }
    } else if (4 == ring) {  // ME1/1a
      deadZoneCenter[0] = -86.0;
      deadZoneCenter[1] = -31.5;
      if (localPos.y() > (yBorder) &&
          (localPos.y() > deadZoneCenter[0] + cutZone && localPos.y() < deadZoneCenter[1])) {
        pass = true;
      }
    }
  }
  return pass;
}

//---------------------------------------------------------------------------------------
// Given a set of digis, the CSCDetId, and the central strip of your choosing, returns
// the avg. Signal-Pedestal for 6 time bin x 5 strip .
//
// Author: P. Jindal
//---------------------------------------------------------------------------------------

float CSCValidation::getSignal(const CSCStripDigiCollection& stripdigis, CSCDetId idCS, int centerStrip) {
  float SigADC[5];
  float TotalADC = 0;
  SigADC[0] = 0;
  SigADC[1] = 0;
  SigADC[2] = 0;
  SigADC[3] = 0;
  SigADC[4] = 0;

  // Loop over strip digis
  CSCStripDigiCollection::DigiRangeIterator sIt;

  for (sIt = stripdigis.begin(); sIt != stripdigis.end(); sIt++) {
    CSCDetId id = (CSCDetId)(*sIt).first;
    if (id == idCS) {
      // First, find the Signal-Pedestal for center strip
      std::vector<CSCStripDigi>::const_iterator digiItr = (*sIt).second.first;
      std::vector<CSCStripDigi>::const_iterator last = (*sIt).second.second;
      for (; digiItr != last; ++digiItr) {
        int thisStrip = digiItr->getStrip();
        if (thisStrip == (centerStrip)) {
          std::vector<int> myADCVals = digiItr->getADCCounts();
          float thisPedestal = 0.5 * (float)(myADCVals[0] + myADCVals[1]);
          float thisSignal = (myADCVals[2] + myADCVals[3] + myADCVals[4] + myADCVals[5] + myADCVals[6] + myADCVals[7]);
          SigADC[0] = thisSignal - 6 * thisPedestal;
        }
        // Now,find the Signal-Pedestal for neighbouring 4 strips
        if (thisStrip == (centerStrip + 1)) {
          std::vector<int> myADCVals = digiItr->getADCCounts();
          float thisPedestal = 0.5 * (float)(myADCVals[0] + myADCVals[1]);
          float thisSignal = (myADCVals[2] + myADCVals[3] + myADCVals[4] + myADCVals[5] + myADCVals[6] + myADCVals[7]);
          SigADC[1] = thisSignal - 6 * thisPedestal;
        }
        if (thisStrip == (centerStrip + 2)) {
          std::vector<int> myADCVals = digiItr->getADCCounts();
          float thisPedestal = 0.5 * (float)(myADCVals[0] + myADCVals[1]);
          float thisSignal = (myADCVals[2] + myADCVals[3] + myADCVals[4] + myADCVals[5] + myADCVals[6] + myADCVals[7]);
          SigADC[2] = thisSignal - 6 * thisPedestal;
        }
        if (thisStrip == (centerStrip - 1)) {
          std::vector<int> myADCVals = digiItr->getADCCounts();
          float thisPedestal = 0.5 * (float)(myADCVals[0] + myADCVals[1]);
          float thisSignal = (myADCVals[2] + myADCVals[3] + myADCVals[4] + myADCVals[5] + myADCVals[6] + myADCVals[7]);
          SigADC[3] = thisSignal - 6 * thisPedestal;
        }
        if (thisStrip == (centerStrip - 2)) {
          std::vector<int> myADCVals = digiItr->getADCCounts();
          float thisPedestal = 0.5 * (float)(myADCVals[0] + myADCVals[1]);
          float thisSignal = (myADCVals[2] + myADCVals[3] + myADCVals[4] + myADCVals[5] + myADCVals[6] + myADCVals[7]);
          SigADC[4] = thisSignal - 6 * thisPedestal;
        }
      }
      TotalADC = 0.2 * (SigADC[0] + SigADC[1] + SigADC[2] + SigADC[3] + SigADC[4]);
    }
  }
  return TotalADC;
}

//---------------------------------------------------------------------------------------
// Look at non-associated recHits
// Author: P. Jindal
//---------------------------------------------------------------------------------------

void CSCValidation::doNoiseHits(edm::Handle<CSCRecHit2DCollection> recHits,
                                edm::Handle<CSCSegmentCollection> cscSegments,
                                edm::ESHandle<CSCGeometry> cscGeom,
                                edm::Handle<CSCStripDigiCollection> strips) {
  CSCRecHit2DCollection::const_iterator recIt;
  for (recIt = recHits->begin(); recIt != recHits->end(); recIt++) {
    CSCDetId idrec = (CSCDetId)(*recIt).cscDetId();

    //Store the Rechits into a Map
    AllRechits.insert(std::pair<CSCDetId, CSCRecHit2D>(idrec, *recIt));

    // Find the strip containing this hit
    int centerid = recIt->nStrips() / 2;
    int centerStrip = recIt->channels(centerid);

    float rHsignal = getthisSignal(*strips, idrec, centerStrip);
    histos->fill1DHist(
        rHsignal, "hrHSignal", "Signal in the 4th time bin for centre strip", 1100, -99, 1000, "recHits");
  }

  for (CSCSegmentCollection::const_iterator it = cscSegments->begin(); it != cscSegments->end(); it++) {
    std::vector<CSCRecHit2D> theseRecHits = (*it).specificRecHits();
    for (std::vector<CSCRecHit2D>::const_iterator iRH = theseRecHits.begin(); iRH != theseRecHits.end(); iRH++) {
      CSCDetId idRH = (CSCDetId)(*iRH).cscDetId();
      LocalPoint lpRH = (*iRH).localPosition();
      float xrec = lpRH.x();
      float yrec = lpRH.y();
      float zrec = lpRH.z();
      bool RHalreadyinMap = false;
      //Store the rechits associated with segments into a Map
      multimap<CSCDetId, CSCRecHit2D>::iterator segRHit;
      segRHit = SegRechits.find(idRH);
      if (segRHit != SegRechits.end()) {
        for (; segRHit != SegRechits.upper_bound(idRH); ++segRHit) {
          //for( segRHit = SegRechits.begin(); segRHit != SegRechits.end() ;++segRHit){
          LocalPoint lposRH = (segRHit->second).localPosition();
          float xpos = lposRH.x();
          float ypos = lposRH.y();
          float zpos = lposRH.z();
          if (xrec == xpos && yrec == ypos && zrec == zpos) {
            RHalreadyinMap = true;
            //std::cout << " Already exists " <<std ::endl;
            break;
          }
        }
      }
      if (!RHalreadyinMap) {
        SegRechits.insert(std::pair<CSCDetId, CSCRecHit2D>(idRH, *iRH));
      }
    }
  }

  findNonAssociatedRecHits(cscGeom, strips);
}

//---------------------------------------------------------------------------------------
// Given  the list of all rechits and the rechits on a segment finds the rechits
// not associated to a segment and stores in a list
//
//---------------------------------------------------------------------------------------

void CSCValidation::findNonAssociatedRecHits(edm::ESHandle<CSCGeometry> cscGeom,
                                             edm::Handle<CSCStripDigiCollection> strips) {
  for (std::multimap<CSCDetId, CSCRecHit2D>::iterator allRHiter = AllRechits.begin(); allRHiter != AllRechits.end();
       ++allRHiter) {
    CSCDetId idRH = allRHiter->first;
    LocalPoint lpRH = (allRHiter->second).localPosition();
    float xrec = lpRH.x();
    float yrec = lpRH.y();
    float zrec = lpRH.z();

    bool foundmatch = false;
    multimap<CSCDetId, CSCRecHit2D>::iterator segRHit;
    segRHit = SegRechits.find(idRH);
    if (segRHit != SegRechits.end()) {
      for (; segRHit != SegRechits.upper_bound(idRH); ++segRHit) {
        LocalPoint lposRH = (segRHit->second).localPosition();
        float xpos = lposRH.x();
        float ypos = lposRH.y();
        float zpos = lposRH.z();

        if (xrec == xpos && yrec == ypos && zrec == zpos) {
          foundmatch = true;
        }

        float d = 0.;
        float dclose = 1000.;

        if (!foundmatch) {
          d = sqrt(pow(xrec - xpos, 2) + pow(yrec - ypos, 2) + pow(zrec - zpos, 2));
          if (d < dclose) {
            dclose = d;
            if (distRHmap.find((allRHiter->second)) ==
                distRHmap.end()) {  // entry for rechit does not yet exist, create one
              distRHmap.insert(make_pair(allRHiter->second, dclose));
            } else {
              // we already have an entry for the detid.
              distRHmap.erase(allRHiter->second);
              distRHmap.insert(
                  make_pair(allRHiter->second, dclose));  // fill rechits for the segment with the given detid
            }
          }
        }
      }
    }
    if (!foundmatch) {
      NonAssociatedRechits.insert(std::pair<CSCDetId, CSCRecHit2D>(idRH, allRHiter->second));
    }
  }

  for (std::map<CSCRecHit2D, float, ltrh>::iterator iter = distRHmap.begin(); iter != distRHmap.end(); ++iter) {
    histos->fill1DHist(iter->second,
                       "hdistRH",
                       "Distance of Non Associated RecHit from closest Segment RecHit",
                       500,
                       0.,
                       100.,
                       "NonAssociatedRechits");
  }

  for (std::multimap<CSCDetId, CSCRecHit2D>::iterator iter = NonAssociatedRechits.begin();
       iter != NonAssociatedRechits.end();
       ++iter) {
    CSCDetId idrec = iter->first;
    int kEndcap = idrec.endcap();
    int cEndcap = idrec.endcap();
    if (kEndcap == 2)
      cEndcap = -1;
    int kRing = idrec.ring();
    int kStation = idrec.station();
    int kChamber = idrec.chamber();
    int kLayer = idrec.layer();

    // Store rechit as a Local Point:
    LocalPoint rhitlocal = (iter->second).localPosition();
    float xreco = rhitlocal.x();
    float yreco = rhitlocal.y();

    // Find the strip containing this hit
    int centerid = (iter->second).nStrips() / 2;
    int centerStrip = (iter->second).channels(centerid);

    // Find the charge associated with this hit
    float rHSumQ = 0;
    float sumsides = 0.;
    int adcsize = (iter->second).nStrips() * (iter->second).nTimeBins();
    for (unsigned int i = 0; i < (iter->second).nStrips(); i++) {
      for (unsigned int j = 0; j < (iter->second).nTimeBins() - 1; j++) {
        rHSumQ += (iter->second).adcs(i, j);
        if (i != 1)
          sumsides += (iter->second).adcs(i, j);
      }
    }

    float rHratioQ = sumsides / rHSumQ;
    if (adcsize != 12)
      rHratioQ = -99;

    // Get the signal timing of this hit
    float rHtime = (iter->second).tpeak() / 50;

    // Get the width of this hit
    int rHwidth = getWidth(*strips, idrec, centerStrip);

    // Get pointer to the layer:
    const CSCLayer* csclayer = cscGeom->layer(idrec);

    // Transform hit position from local chamber geometry to global CMS geom
    GlobalPoint rhitglobal = csclayer->toGlobal(rhitlocal);
    float grecx = rhitglobal.x();
    float grecy = rhitglobal.y();

    // Simple occupancy variables
    int kCodeBroad = cEndcap * (4 * (kStation - 1) + kRing);
    int kCodeNarrow = cEndcap * (100 * (kRing - 1) + kChamber);

    //Fill the non-associated rechits parameters in histogram
    histos->fill1DHist(
        kCodeBroad, "hNARHCodeBroad", "broad scope code for recHits", 33, -16.5, 16.5, "NonAssociatedRechits");
    if (kStation == 1)
      histos->fill1DHist(kCodeNarrow,
                         "hNARHCodeNarrow1",
                         "narrow scope recHit code station 1",
                         801,
                         -400.5,
                         400.5,
                         "NonAssociatedRechits");
    if (kStation == 2)
      histos->fill1DHist(kCodeNarrow,
                         "hNARHCodeNarrow2",
                         "narrow scope recHit code station 2",
                         801,
                         -400.5,
                         400.5,
                         "NonAssociatedRechits");
    if (kStation == 3)
      histos->fill1DHist(kCodeNarrow,
                         "hNARHCodeNarrow3",
                         "narrow scope recHit code station 3",
                         801,
                         -400.5,
                         400.5,
                         "NonAssociatedRechits");
    if (kStation == 4)
      histos->fill1DHist(kCodeNarrow,
                         "hNARHCodeNarrow4",
                         "narrow scope recHit code station 4",
                         801,
                         -400.5,
                         400.5,
                         "NonAssociatedRechits");
    histos->fill1DHistByType(kLayer, "hNARHLayer", "RecHits per Layer", idrec, 8, -0.5, 7.5, "NonAssociatedRechits");
    histos->fill1DHistByType(xreco, "hNARHX", "Local X of recHit", idrec, 160, -80., 80., "NonAssociatedRechits");
    histos->fill1DHistByType(yreco, "hNARHY", "Local Y of recHit", idrec, 60, -180., 180., "NonAssociatedRechits");
    if (kStation == 1 && (kRing == 1 || kRing == 4))
      histos->fill1DHistByType(
          rHSumQ, "hNARHSumQ", "Sum 3x3 recHit Charge", idrec, 250, 0, 4000, "NonAssociatedRechits");
    else
      histos->fill1DHistByType(
          rHSumQ, "hNARHSumQ", "Sum 3x3 recHit Charge", idrec, 250, 0, 2000, "NonAssociatedRechits");
    histos->fill1DHistByType(
        rHratioQ, "hNARHRatioQ", "Ratio (Ql+Qr)/Qt)", idrec, 120, -0.1, 1.1, "NonAssociatedRechits");
    histos->fill1DHistByType(rHtime, "hNARHTiming", "recHit Timing", idrec, 200, -10, 10, "NonAssociatedRechits");
    histos->fill2DHistByStation(grecx,
                                grecy,
                                "hNARHGlobal",
                                "recHit Global Position",
                                idrec,
                                400,
                                -800.,
                                800.,
                                400,
                                -800.,
                                800.,
                                "NonAssociatedRechits");
    histos->fill1DHistByType(
        rHwidth, "hNARHwidth", "width for Non associated recHit", idrec, 21, -0.5, 20.5, "NonAssociatedRechits");
  }

  for (std::multimap<CSCDetId, CSCRecHit2D>::iterator iter = SegRechits.begin(); iter != SegRechits.end(); ++iter) {
    CSCDetId idrec = iter->first;
    int kEndcap = idrec.endcap();
    int cEndcap = idrec.endcap();
    if (kEndcap == 2)
      cEndcap = -1;
    int kRing = idrec.ring();
    int kStation = idrec.station();
    int kChamber = idrec.chamber();
    int kLayer = idrec.layer();

    // Store rechit as a Local Point:
    LocalPoint rhitlocal = (iter->second).localPosition();
    float xreco = rhitlocal.x();
    float yreco = rhitlocal.y();

    // Find the strip containing this hit
    int centerid = (iter->second).nStrips() / 2;
    int centerStrip = (iter->second).channels(centerid);

    // Find the charge associated with this hit

    float rHSumQ = 0;
    float sumsides = 0.;
    int adcsize = (iter->second).nStrips() * (iter->second).nTimeBins();
    for (unsigned int i = 0; i < (iter->second).nStrips(); i++) {
      for (unsigned int j = 0; j < (iter->second).nTimeBins() - 1; j++) {
        rHSumQ += (iter->second).adcs(i, j);
        if (i != 1)
          sumsides += (iter->second).adcs(i, j);
      }
    }

    float rHratioQ = sumsides / rHSumQ;
    if (adcsize != 12)
      rHratioQ = -99;

    // Get the signal timing of this hit
    float rHtime = (iter->second).tpeak() / 50;

    // Get the width of this hit
    int rHwidth = getWidth(*strips, idrec, centerStrip);

    // Get pointer to the layer:
    const CSCLayer* csclayer = cscGeom->layer(idrec);

    // Transform hit position from local chamber geometry to global CMS geom
    GlobalPoint rhitglobal = csclayer->toGlobal(rhitlocal);
    float grecx = rhitglobal.x();
    float grecy = rhitglobal.y();

    // Simple occupancy variables
    int kCodeBroad = cEndcap * (4 * (kStation - 1) + kRing);
    int kCodeNarrow = cEndcap * (100 * (kRing - 1) + kChamber);

    //Fill the non-associated rechits global position in histogram
    histos->fill1DHist(
        kCodeBroad, "hSegRHCodeBroad", "broad scope code for recHits", 33, -16.5, 16.5, "AssociatedRechits");
    if (kStation == 1)
      histos->fill1DHist(kCodeNarrow,
                         "hSegRHCodeNarrow1",
                         "narrow scope recHit code station 1",
                         801,
                         -400.5,
                         400.5,
                         "AssociatedRechits");
    if (kStation == 2)
      histos->fill1DHist(kCodeNarrow,
                         "hSegRHCodeNarrow2",
                         "narrow scope recHit code station 2",
                         801,
                         -400.5,
                         400.5,
                         "AssociatedRechits");
    if (kStation == 3)
      histos->fill1DHist(kCodeNarrow,
                         "hSegRHCodeNarrow3",
                         "narrow scope recHit code station 3",
                         801,
                         -400.5,
                         400.5,
                         "AssociatedRechits");
    if (kStation == 4)
      histos->fill1DHist(kCodeNarrow,
                         "hSegRHCodeNarrow4",
                         "narrow scope recHit code station 4",
                         801,
                         -400.5,
                         400.5,
                         "AssociatedRechits");
    histos->fill1DHistByType(kLayer, "hSegRHLayer", "RecHits per Layer", idrec, 8, -0.5, 7.5, "AssociatedRechits");
    histos->fill1DHistByType(xreco, "hSegRHX", "Local X of recHit", idrec, 160, -80., 80., "AssociatedRechits");
    histos->fill1DHistByType(yreco, "hSegRHY", "Local Y of recHit", idrec, 60, -180., 180., "AssociatedRechits");
    if (kStation == 1 && (kRing == 1 || kRing == 4))
      histos->fill1DHistByType(rHSumQ, "hSegRHSumQ", "Sum 3x3 recHit Charge", idrec, 250, 0, 4000, "AssociatedRechits");
    else
      histos->fill1DHistByType(rHSumQ, "hSegRHSumQ", "Sum 3x3 recHit Charge", idrec, 250, 0, 2000, "AssociatedRechits");
    histos->fill1DHistByType(rHratioQ, "hSegRHRatioQ", "Ratio (Ql+Qr)/Qt)", idrec, 120, -0.1, 1.1, "AssociatedRechits");
    histos->fill1DHistByType(rHtime, "hSegRHTiming", "recHit Timing", idrec, 200, -10, 10, "AssociatedRechits");
    histos->fill2DHistByStation(grecx,
                                grecy,
                                "hSegRHGlobal",
                                "recHit Global Position",
                                idrec,
                                400,
                                -800.,
                                800.,
                                400,
                                -800.,
                                800.,
                                "AssociatedRechits");
    histos->fill1DHistByType(
        rHwidth, "hSegRHwidth", "width for Non associated recHit", idrec, 21, -0.5, 20.5, "AssociatedRechits");
  }

  distRHmap.clear();
  AllRechits.clear();
  SegRechits.clear();
  NonAssociatedRechits.clear();
}

float CSCValidation::getthisSignal(const CSCStripDigiCollection& stripdigis, CSCDetId idRH, int centerStrip) {
  // Loop over strip digis responsible for this recHit
  CSCStripDigiCollection::DigiRangeIterator sIt;
  float thisADC = 0.;
  //bool foundRHid = false;
  // std::cout<<"iD   S/R/C/L = "<<idRH<<"    "<<idRH.station()<<"/"<<idRH.ring()<<"/"<<idRH.chamber()<<"/"<<idRH.layer()<<std::endl;
  for (sIt = stripdigis.begin(); sIt != stripdigis.end(); sIt++) {
    CSCDetId id = (CSCDetId)(*sIt).first;
    //std::cout<<"STRIPS: id    S/R/C/L = "<<id<<"     "<<id.station()<<"/"<<id.ring()<<"/"<<id.chamber()<<"/"<<id.layer()<<std::endl;
    if (id == idRH) {
      //foundRHid = true;
      vector<CSCStripDigi>::const_iterator digiItr = (*sIt).second.first;
      vector<CSCStripDigi>::const_iterator last = (*sIt).second.second;
      //if(digiItr == last ) {std::cout << " Attention1 :: Size of digi collection is zero " << std::endl;}
      int St = idRH.station();
      int Rg = idRH.ring();
      if (St == 1 && Rg == 4) {
        while (centerStrip > 16)
          centerStrip -= 16;
      }
      for (; digiItr != last; ++digiItr) {
        int thisStrip = digiItr->getStrip();
        //std::cout<<" thisStrip = "<<thisStrip<<" centerStrip = "<<centerStrip<<std::endl;
        std::vector<int> myADCVals = digiItr->getADCCounts();
        float thisPedestal = 0.5 * (float)(myADCVals[0] + myADCVals[1]);
        float Signal = (float)myADCVals[3];
        if (thisStrip == (centerStrip)) {
          thisADC = Signal - thisPedestal;
          //if(thisADC >= 0. && thisADC <2.) {std::cout << " Attention2 :: The Signal is equal to the pedestal " << std::endl;
          //}
          //if(thisADC < 0.) {std::cout << " Attention3 :: The Signal is less than the pedestal " << std::endl;
          //}
        }
        if (thisStrip == (centerStrip + 1)) {
          std::vector<int> myADCVals = digiItr->getADCCounts();
        }
        if (thisStrip == (centerStrip - 1)) {
          std::vector<int> myADCVals = digiItr->getADCCounts();
        }
      }
    }
  }
  //if(!foundRHid){std::cout << " Attention4 :: Did not find a matching RH id in the Strip Digi collection " << std::endl;}
  return thisADC;
}

//---------------------------------------------------------------------------------------
//
// Function is meant to take the DetId and center strip number of a recHit and return
// the width in terms of strips
//---------------------------------------------------------------------------------------

int CSCValidation::getWidth(const CSCStripDigiCollection& stripdigis, CSCDetId idRH, int centerStrip) {
  int width = 1;
  int widthpos = 0;
  int widthneg = 0;

  // Loop over strip digis responsible for this recHit and sum charge
  CSCStripDigiCollection::DigiRangeIterator sIt;

  for (sIt = stripdigis.begin(); sIt != stripdigis.end(); sIt++) {
    CSCDetId id = (CSCDetId)(*sIt).first;
    if (id == idRH) {
      std::vector<CSCStripDigi>::const_iterator digiItr = (*sIt).second.first;
      std::vector<CSCStripDigi>::const_iterator first = (*sIt).second.first;
      std::vector<CSCStripDigi>::const_iterator last = (*sIt).second.second;
      std::vector<CSCStripDigi>::const_iterator it = (*sIt).second.first;
      std::vector<CSCStripDigi>::const_iterator itr = (*sIt).second.first;
      //std::cout << " IDRH " << id <<std::endl;
      int St = idRH.station();
      int Rg = idRH.ring();
      if (St == 1 && Rg == 4) {
        while (centerStrip > 16)
          centerStrip -= 16;
      }
      for (; digiItr != last; ++digiItr) {
        int thisStrip = digiItr->getStrip();
        if (thisStrip == (centerStrip)) {
          it = digiItr;
          for (; it != last; ++it) {
            int strip = it->getStrip();
            std::vector<int> myADCVals = it->getADCCounts();
            float thisPedestal = 0.5 * (float)(myADCVals[0] + myADCVals[1]);
            if (((float)myADCVals[3] - thisPedestal) < 6 || widthpos == 10 || it == last) {
              break;
            }
            if (strip != centerStrip) {
              widthpos += 1;
            }
          }
          itr = digiItr;
          for (; itr != first; --itr) {
            int strip = itr->getStrip();
            std::vector<int> myADCVals = itr->getADCCounts();
            float thisPedestal = 0.5 * (float)(myADCVals[0] + myADCVals[1]);
            if (((float)myADCVals[3] - thisPedestal) < 6 || widthneg == 10 || itr == first) {
              break;
            }
            if (strip != centerStrip) {
              widthneg += 1;
            }
          }
        }
      }
    }
  }
  //std::cout << "Widthneg - " <<  widthneg << "Widthpos + " <<  widthpos << std::endl;
  width = width + widthneg + widthpos;
  //std::cout << "Width " <<  width << std::endl;
  return width;
}

//---------------------------------------------------------------------------
// Module for looking at gas gains
// Author N. Terentiev
//---------------------------------------------------------------------------

void CSCValidation::doGasGain(const CSCWireDigiCollection& wirecltn,
                              const CSCStripDigiCollection& strpcltn,
                              const CSCRecHit2DCollection& rechitcltn) {
  int channel = 0, mult, wire, layer, idlayer, idchamber, ring;
  int wire_strip_rechit_present;
  std::string name, title, endcapstr;
  ostringstream ss;
  CSCIndexer indexer;
  std::map<int, int>::iterator intIt;

  m_single_wire_layer.clear();

  if (firstEvent) {
    // HV segments, their # and location in terms of wire groups

    m_wire_hvsegm.clear();
    std::map<int, std::vector<int> >::iterator intvecIt;
    //                    ME1a ME1b ME1/2 ME1/3 ME2/1 ME2/2 ME3/1 ME3/2 ME4/1 ME4/2
    int csctype[10] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
    int hvsegm_layer[10] = {1, 1, 3, 3, 3, 5, 3, 5, 3, 5};
    int id;
    nmbhvsegm.clear();
    for (int i = 0; i < 10; i++)
      nmbhvsegm.push_back(hvsegm_layer[i]);
    // For ME1/1a
    std::vector<int> zer_1_1a(49, 0);
    id = csctype[0];
    if (m_wire_hvsegm.find(id) == m_wire_hvsegm.end())
      m_wire_hvsegm[id] = zer_1_1a;
    intvecIt = m_wire_hvsegm.find(id);
    for (int wire = 1; wire <= 48; wire++)
      intvecIt->second[wire] = 1;  // Segment 1

    // For ME1/1b
    std::vector<int> zer_1_1b(49, 0);
    id = csctype[1];
    if (m_wire_hvsegm.find(id) == m_wire_hvsegm.end())
      m_wire_hvsegm[id] = zer_1_1b;
    intvecIt = m_wire_hvsegm.find(id);
    for (int wire = 1; wire <= 48; wire++)
      intvecIt->second[wire] = 1;  // Segment 1

    // For ME1/2
    std::vector<int> zer_1_2(65, 0);
    id = csctype[2];
    if (m_wire_hvsegm.find(id) == m_wire_hvsegm.end())
      m_wire_hvsegm[id] = zer_1_2;
    intvecIt = m_wire_hvsegm.find(id);
    for (int wire = 1; wire <= 24; wire++)
      intvecIt->second[wire] = 1;  // Segment 1
    for (int wire = 25; wire <= 48; wire++)
      intvecIt->second[wire] = 2;  // Segment 2
    for (int wire = 49; wire <= 64; wire++)
      intvecIt->second[wire] = 3;  // Segment 3

    // For ME1/3
    std::vector<int> zer_1_3(33, 0);
    id = csctype[3];
    if (m_wire_hvsegm.find(id) == m_wire_hvsegm.end())
      m_wire_hvsegm[id] = zer_1_3;
    intvecIt = m_wire_hvsegm.find(id);
    for (int wire = 1; wire <= 12; wire++)
      intvecIt->second[wire] = 1;  // Segment 1
    for (int wire = 13; wire <= 22; wire++)
      intvecIt->second[wire] = 2;  // Segment 2
    for (int wire = 23; wire <= 32; wire++)
      intvecIt->second[wire] = 3;  // Segment 3

    // For ME2/1
    std::vector<int> zer_2_1(113, 0);
    id = csctype[4];
    if (m_wire_hvsegm.find(id) == m_wire_hvsegm.end())
      m_wire_hvsegm[id] = zer_2_1;
    intvecIt = m_wire_hvsegm.find(id);
    for (int wire = 1; wire <= 44; wire++)
      intvecIt->second[wire] = 1;  // Segment 1
    for (int wire = 45; wire <= 80; wire++)
      intvecIt->second[wire] = 2;  // Segment 2
    for (int wire = 81; wire <= 112; wire++)
      intvecIt->second[wire] = 3;  // Segment 3

    // For ME2/2
    std::vector<int> zer_2_2(65, 0);
    id = csctype[5];
    if (m_wire_hvsegm.find(id) == m_wire_hvsegm.end())
      m_wire_hvsegm[id] = zer_2_2;
    intvecIt = m_wire_hvsegm.find(id);
    for (int wire = 1; wire <= 16; wire++)
      intvecIt->second[wire] = 1;  // Segment 1
    for (int wire = 17; wire <= 28; wire++)
      intvecIt->second[wire] = 2;  // Segment 2
    for (int wire = 29; wire <= 40; wire++)
      intvecIt->second[wire] = 3;  // Segment 3
    for (int wire = 41; wire <= 52; wire++)
      intvecIt->second[wire] = 4;  // Segment 4
    for (int wire = 53; wire <= 64; wire++)
      intvecIt->second[wire] = 5;  // Segment 5

    // For ME3/1
    std::vector<int> zer_3_1(97, 0);
    id = csctype[6];
    if (m_wire_hvsegm.find(id) == m_wire_hvsegm.end())
      m_wire_hvsegm[id] = zer_3_1;
    intvecIt = m_wire_hvsegm.find(id);
    for (int wire = 1; wire <= 32; wire++)
      intvecIt->second[wire] = 1;  // Segment 1
    for (int wire = 33; wire <= 64; wire++)
      intvecIt->second[wire] = 2;  // Segment 2
    for (int wire = 65; wire <= 96; wire++)
      intvecIt->second[wire] = 3;  // Segment 3

    // For ME3/2
    std::vector<int> zer_3_2(65, 0);
    id = csctype[7];
    if (m_wire_hvsegm.find(id) == m_wire_hvsegm.end())
      m_wire_hvsegm[id] = zer_3_2;
    intvecIt = m_wire_hvsegm.find(id);
    for (int wire = 1; wire <= 16; wire++)
      intvecIt->second[wire] = 1;  // Segment 1
    for (int wire = 17; wire <= 28; wire++)
      intvecIt->second[wire] = 2;  // Segment 2
    for (int wire = 29; wire <= 40; wire++)
      intvecIt->second[wire] = 3;  // Segment 3
    for (int wire = 41; wire <= 52; wire++)
      intvecIt->second[wire] = 4;  // Segment 4
    for (int wire = 53; wire <= 64; wire++)
      intvecIt->second[wire] = 5;  // Segment 5

    // For ME4/1
    std::vector<int> zer_4_1(97, 0);
    id = csctype[8];
    if (m_wire_hvsegm.find(id) == m_wire_hvsegm.end())
      m_wire_hvsegm[id] = zer_4_1;
    intvecIt = m_wire_hvsegm.find(id);
    for (int wire = 1; wire <= 32; wire++)
      intvecIt->second[wire] = 1;  // Segment 1
    for (int wire = 33; wire <= 64; wire++)
      intvecIt->second[wire] = 2;  // Segment 2
    for (int wire = 65; wire <= 96; wire++)
      intvecIt->second[wire] = 3;  // Segment 3

    // For ME4/2
    std::vector<int> zer_4_2(65, 0);
    id = csctype[9];
    if (m_wire_hvsegm.find(id) == m_wire_hvsegm.end())
      m_wire_hvsegm[id] = zer_4_2;
    intvecIt = m_wire_hvsegm.find(id);
    for (int wire = 1; wire <= 16; wire++)
      intvecIt->second[wire] = 1;  // Segment 1
    for (int wire = 17; wire <= 28; wire++)
      intvecIt->second[wire] = 2;  // Segment 2
    for (int wire = 29; wire <= 40; wire++)
      intvecIt->second[wire] = 3;  // Segment 3
    for (int wire = 41; wire <= 52; wire++)
      intvecIt->second[wire] = 4;  // Segment 4
    for (int wire = 53; wire <= 64; wire++)
      intvecIt->second[wire] = 5;  // Segment 5

  }  // end of if(nEventsAnalyzed==1)

  // do wires, strips and rechits present?
  wire_strip_rechit_present = 0;
  if (wirecltn.begin() != wirecltn.end())
    wire_strip_rechit_present = wire_strip_rechit_present + 1;
  if (strpcltn.begin() != strpcltn.end())
    wire_strip_rechit_present = wire_strip_rechit_present + 2;
  if (rechitcltn.begin() != rechitcltn.end())
    wire_strip_rechit_present = wire_strip_rechit_present + 4;

  if (wire_strip_rechit_present == 7) {
    //       std::cout<<"Event "<<nEventsAnalyzed<<std::endl;
    //       std::cout<<std::endl;

    // cycle on wire collection for all CSC to select single wire hit layers
    CSCWireDigiCollection::DigiRangeIterator wiredetUnitIt;

    for (wiredetUnitIt = wirecltn.begin(); wiredetUnitIt != wirecltn.end(); ++wiredetUnitIt) {
      const CSCDetId id = (*wiredetUnitIt).first;
      idlayer = indexer.dbIndex(id, channel);
      // looping in the layer of given CSC
      mult = 0;
      wire = 0;
      const CSCWireDigiCollection::Range& range = (*wiredetUnitIt).second;
      for (CSCWireDigiCollection::const_iterator digiIt = range.first; digiIt != range.second; ++digiIt) {
        wire = (*digiIt).getWireGroup();
        mult++;
      }  // end of digis loop in layer

      // select layers with single wire hit
      if (mult == 1) {
        if (m_single_wire_layer.find(idlayer) == m_single_wire_layer.end())
          m_single_wire_layer[idlayer] = wire;
      }  // end of if(mult==1)
    }  // end of cycle on detUnit

    // Looping thru rechit collection
    CSCRecHit2DCollection::const_iterator recIt;
    CSCRecHit2D::ADCContainer m_adc;

    for (recIt = rechitcltn.begin(); recIt != rechitcltn.end(); ++recIt) {
      CSCDetId id = (CSCDetId)(*recIt).cscDetId();
      idlayer = indexer.dbIndex(id, channel);
      idchamber = idlayer / 10;
      layer = id.layer();
      // select layer with single wire rechit
      if (m_single_wire_layer.find(idlayer) != m_single_wire_layer.end()) {
        if (recIt->nStrips() == 3) {
          // get 3X3 ADC Sum
          unsigned int binmx = 0;
          float adcmax = 0.0;

          for (unsigned int i = 0; i < recIt->nStrips(); i++)
            for (unsigned int j = 0; j < recIt->nTimeBins(); j++)
              if (recIt->adcs(i, j) > adcmax) {
                adcmax = recIt->adcs(i, j);
                binmx = j;
              }

          float adc_3_3_sum = 0.0;
          //well, this really only works for 3 strips in readout - not sure the right fix for general case
          for (unsigned int i = 0; i < recIt->nStrips(); i++)
            for (unsigned int j = binmx - 1; j <= binmx + 1; j++)
              adc_3_3_sum += recIt->adcs(i, j);

          if (adc_3_3_sum > 0.0 && adc_3_3_sum < 2000.0) {
            // temporary fix for ME1/1a to avoid triple entries
            int flag = 0;
            if (id.station() == 1 && id.ring() == 4 && recIt->channels(1) > 16)
              flag = 1;
            // end of temporary fix
            if (flag == 0) {
              wire = m_single_wire_layer[idlayer];
              int chambertype = id.iChamberType(id.station(), id.ring());
              int hvsgmtnmb = m_wire_hvsegm[chambertype][wire];
              int nmbofhvsegm = nmbhvsegm[chambertype - 1];
              int location = (layer - 1) * nmbofhvsegm + hvsgmtnmb;

              ss << "gas_gain_rechit_adc_3_3_sum_location_ME_" << idchamber;
              name = ss.str();
              ss.str("");
              if (id.endcap() == 1)
                endcapstr = "+";
              ring = id.ring();
              if (id.station() == 1 && id.ring() == 4)
                ring = 1;
              if (id.endcap() == 2)
                endcapstr = "-";
              ss << "Gas Gain Rechit ADC3X3 Sum ME" << endcapstr << id.station() << "/" << ring << "/" << id.chamber();
              title = ss.str();
              ss.str("");
              float x = location;
              float y = adc_3_3_sum;
              histos->fill2DHist(x, y, name, title, 30, 1.0, 31.0, 50, 0.0, 2000.0, "GasGain");

              /*
                   std::cout<<idchamber<<"   "<<id.station()<<" "<<id.ring()<<" "
                   <<id.chamber()<<"    "<<layer<<" "<< wire<<" "<<m_strip[1]<<" "<<
                   chambertype<<" "<< hvsgmtnmb<<" "<< nmbofhvsegm<<" "<<
                   location<<"   "<<adc_3_3_sum<<std::endl;
                 */
            }  // end of if flag==0
          }  // end if(adcsum>0.0 && adcsum<2000.0)
        }  // end of if if(m_strip.size()==3
      }  // end of if single wire
    }  // end of looping thru rechit collection
  }  // end of if wire and strip and rechit present
}

//---------------------------------------------------------------------------
// Module for looking at AFEB Timing
// Author N. Terentiev
//---------------------------------------------------------------------------

void CSCValidation::doAFEBTiming(const CSCWireDigiCollection& wirecltn) {
  ostringstream ss;
  std::string name, title, endcapstr;
  float x, y;
  int wire, wiretbin, nmbwiretbin, layer, afeb, idlayer, idchamber;
  int channel = 0;  // for  CSCIndexer::dbIndex(id, channel); irrelevant here
  CSCIndexer indexer;

  if (wirecltn.begin() != wirecltn.end()) {
    //std::cout<<std::endl;
    //std::cout<<"Event "<<nEventsAnalyzed<<std::endl;
    //std::cout<<std::endl;

    // cycle on wire collection for all CSC
    CSCWireDigiCollection::DigiRangeIterator wiredetUnitIt;
    for (wiredetUnitIt = wirecltn.begin(); wiredetUnitIt != wirecltn.end(); ++wiredetUnitIt) {
      const CSCDetId id = (*wiredetUnitIt).first;
      idlayer = indexer.dbIndex(id, channel);
      idchamber = idlayer / 10;
      layer = id.layer();

      if (id.endcap() == 1)
        endcapstr = "+";
      if (id.endcap() == 2)
        endcapstr = "-";

      // looping in the layer of given CSC

      const CSCWireDigiCollection::Range& range = (*wiredetUnitIt).second;
      for (CSCWireDigiCollection::const_iterator digiIt = range.first; digiIt != range.second; ++digiIt) {
        wire = (*digiIt).getWireGroup();
        wiretbin = (*digiIt).getTimeBin();
        nmbwiretbin = (*digiIt).getTimeBinsOn().size();
        afeb = 3 * ((wire - 1) / 8) + (layer + 1) / 2;

        // Anode wire group time bin vs afeb for each CSC
        x = afeb;
        y = wiretbin;
        ss << "afeb_time_bin_vs_afeb_occupancy_ME_" << idchamber;
        name = ss.str();
        ss.str("");
        ss << "Time Bin vs AFEB Occupancy ME" << endcapstr << id.station() << "/" << id.ring() << "/" << id.chamber();
        title = ss.str();
        ss.str("");
        histos->fill2DHist(x, y, name, title, 42, 1., 43., 16, 0., 16., "AFEBTiming");

        // Number of anode wire group time bin vs afeb for each CSC
        x = afeb;
        y = nmbwiretbin;
        ss << "nmb_afeb_time_bins_vs_afeb_ME_" << idchamber;
        name = ss.str();
        ss.str("");
        ss << "Number of Time Bins vs AFEB ME" << endcapstr << id.station() << "/" << id.ring() << "/" << id.chamber();
        title = ss.str();
        ss.str("");
        histos->fill2DHist(x, y, name, title, 42, 1., 43., 16, 0., 16., "AFEBTiming");

      }  // end of digis loop in layer
    }  // end of wire collection loop
  }  // end of      if(wirecltn.begin() != wirecltn.end())
}

//---------------------------------------------------------------------------
// Module for looking at Comparator Timing
// Author N. Terentiev
//---------------------------------------------------------------------------

void CSCValidation::doCompTiming(const CSCComparatorDigiCollection& compars) {
  ostringstream ss;
  std::string name, title, endcap;
  float x, y;
  int strip, tbin, cfeb, idlayer, idchamber;
  int channel = 0;  // for  CSCIndexer::dbIndex(id, channel); irrelevant here
  CSCIndexer indexer;

  if (compars.begin() != compars.end()) {
    //std::cout<<std::endl;
    //std::cout<<"Event "<<nEventsAnalyzed<<std::endl;
    //std::cout<<std::endl;

    // cycle on comparators collection for all CSC
    CSCComparatorDigiCollection::DigiRangeIterator compdetUnitIt;
    for (compdetUnitIt = compars.begin(); compdetUnitIt != compars.end(); ++compdetUnitIt) {
      const CSCDetId id = (*compdetUnitIt).first;
      idlayer = indexer.dbIndex(id, channel);  // channel irrelevant here
      idchamber = idlayer / 10;

      if (id.endcap() == 1)
        endcap = "+";
      if (id.endcap() == 2)
        endcap = "-";
      // looping in the layer of given CSC
      const CSCComparatorDigiCollection::Range& range = (*compdetUnitIt).second;
      for (CSCComparatorDigiCollection::const_iterator digiIt = range.first; digiIt != range.second; ++digiIt) {
        strip = (*digiIt).getStrip();
        /*
          if(id.station()==1 && (id.ring()==1 || id.ring()==4))
             std::cout<<idchamber<<" "<<id.station()<<" "<<id.ring()<<" "
                      <<strip <<std::endl;
          */
        indexer.dbIndex(id, strip);  // strips 1-16 of ME1/1a
                                     // become strips 65-80 of ME1/1
        tbin = (*digiIt).getTimeBin();
        cfeb = (strip - 1) / 16 + 1;

        // time bin vs cfeb for each CSC

        x = cfeb;
        y = tbin;
        ss << "comp_time_bin_vs_cfeb_occupancy_ME_" << idchamber;
        name = ss.str();
        ss.str("");
        ss << "Comparator Time Bin vs CFEB Occupancy ME" << endcap << id.station() << "/" << id.ring() << "/"
           << id.chamber();
        title = ss.str();
        ss.str("");
        histos->fill2DHist(x, y, name, title, 5, 1., 6., 16, 0., 16., "CompTiming");

      }  // end of digis loop in layer
    }  // end of collection loop
  }  // end of      if(compars.begin() !=compars.end())
}

//---------------------------------------------------------------------------
// Module for looking at Strip Timing
// Author N. Terentiev
//---------------------------------------------------------------------------

void CSCValidation::doADCTiming(const CSCRecHit2DCollection& rechitcltn) {
  float adc_3_3_sum, adc_3_3_wtbin, x, y;
  int cfeb, idchamber, ring;

  std::string name, title, endcapstr;
  ostringstream ss;
  std::vector<float> zer(6, 0.0);

  CSCIndexer indexer;
  std::map<int, int>::iterator intIt;

  if (rechitcltn.begin() != rechitcltn.end()) {
    //   std::cout<<"Event "<<nEventsAnalyzed <<std::endl;

    // Looping thru rechit collection
    CSCRecHit2DCollection::const_iterator recIt;
    CSCRecHit2D::ADCContainer m_adc;
    for (recIt = rechitcltn.begin(); recIt != rechitcltn.end(); ++recIt) {
      CSCDetId id = (CSCDetId)(*recIt).cscDetId();
      // getting strips comprising rechit
      if (recIt->nStrips() == 3) {
        // get 3X3 ADC Sum
        // get 3X3 ADC Sum
        unsigned int binmx = 0;
        float adcmax = 0.0;

        for (unsigned int i = 0; i < recIt->nStrips(); i++)
          for (unsigned int j = 0; j < recIt->nTimeBins(); j++)
            if (recIt->adcs(i, j) > adcmax) {
              adcmax = recIt->adcs(i, j);
              binmx = j;
            }

        adc_3_3_sum = 0.0;
        //well, this really only works for 3 strips in readout - not sure the right fix for general case
        for (unsigned int i = 0; i < recIt->nStrips(); i++)
          for (unsigned int j = binmx - 1; j <= binmx + 1; j++)
            adc_3_3_sum += recIt->adcs(i, j);

        // ADC weighted time bin
        if (adc_3_3_sum > 100.0) {
          int centerStrip = recIt->channels(1);  //take central from 3 strips;
          // temporary fix
          int flag = 0;
          if (id.station() == 1 && id.ring() == 4 && centerStrip > 16)
            flag = 1;
          // end of temporary fix
          if (flag == 0) {
            adc_3_3_wtbin = (*recIt).tpeak() / 50;              //getTiming(strpcltn, id, centerStrip);
            idchamber = indexer.dbIndex(id, centerStrip) / 10;  //strips 1-16 ME1/1a
                                                                // become strips 65-80 ME1/1 !!!
                                                                /*
                      if(id.station()==1 && (id.ring()==1 || id.ring()==4))
                      std::cout<<idchamber<<" "<<id.station()<<" "<<id.ring()<<" "<<m_strip[1]<<" "<<
                          "      "<<centerStrip<<
                             " "<<adc_3_3_wtbin<<"     "<<adc_3_3_sum<<std::endl;
                      */
            ss << "adc_3_3_weight_time_bin_vs_cfeb_occupancy_ME_" << idchamber;
            name = ss.str();
            ss.str("");

            std::string endcapstr;
            if (id.endcap() == 1)
              endcapstr = "+";
            if (id.endcap() == 2)
              endcapstr = "-";
            ring = id.ring();
            if (id.ring() == 4)
              ring = 1;
            ss << "ADC 3X3 Weighted Time Bin vs CFEB Occupancy ME" << endcapstr << id.station() << "/" << ring << "/"
               << id.chamber();
            title = ss.str();
            ss.str("");

            cfeb = (centerStrip - 1) / 16 + 1;
            x = cfeb;
            y = adc_3_3_wtbin;
            histos->fill2DHist(x, y, name, title, 5, 1., 6., 80, -8., 8., "ADCTiming");
          }  // end of if flag==0
        }  // end of if (adc_3_3_sum > 100.0)
      }  // end of if if(m_strip.size()==3
    }  // end of the  pass thru CSCRecHit2DCollection
  }  // end of if (rechitcltn.begin() != rechitcltn.end())
}

//---------------------------------------------------------------------------------------
// Construct histograms for monitoring the trigger and offline timing
// Author: A. Deisher
//---------------------------------------------------------------------------------------

void CSCValidation::doTimeMonitoring(edm::Handle<CSCRecHit2DCollection> recHits,
                                     edm::Handle<CSCSegmentCollection> cscSegments,
                                     edm::Handle<CSCALCTDigiCollection> alcts,
                                     edm::Handle<CSCCLCTDigiCollection> clcts,
                                     edm::Handle<CSCCorrelatedLCTDigiCollection> correlatedlcts,
                                     edm::Handle<L1MuGMTReadoutCollection> pCollection,
                                     edm::ESHandle<CSCGeometry> cscGeom,
                                     const edm::EventSetup& eventSetup,
                                     const edm::Event& event) {
  map<CSCDetId, float> segment_median_map;          //structure for storing the median time for segments in a chamber
  map<CSCDetId, GlobalPoint> segment_position_map;  //structure for storing the global position for segments in a chamber

  // -----------------------
  // loop over segments
  // -----------------------
  for (CSCSegmentCollection::const_iterator dSiter = cscSegments->begin(); dSiter != cscSegments->end(); dSiter++) {
    CSCDetId id = (CSCDetId)(*dSiter).cscDetId();
    LocalPoint localPos = (*dSiter).localPosition();
    GlobalPoint globalPosition = GlobalPoint(0.0, 0.0, 0.0);
    const CSCChamber* cscchamber = cscGeom->chamber(id);
    if (cscchamber) {
      globalPosition = cscchamber->toGlobal(localPos);
    }

    // try to get the CSC recHits that contribute to this segment.
    std::vector<CSCRecHit2D> theseRecHits = (*dSiter).specificRecHits();
    int nRH = (*dSiter).nRecHits();
    if (nRH < 4)
      continue;

    //Store the recHit times of a segment in a vector for later sorting
    vector<float> non_zero;

    for (vector<CSCRecHit2D>::const_iterator iRH = theseRecHits.begin(); iRH != theseRecHits.end(); iRH++) {
      non_zero.push_back(iRH->tpeak());

    }  // end rechit loop

    //Sort the vector of hit times for this segment and average the center two
    sort(non_zero.begin(), non_zero.end());
    int middle_index = non_zero.size() / 2;
    float average_two = (non_zero.at(middle_index - 1) + non_zero.at(middle_index)) / 2.;
    if (non_zero.size() % 2)
      average_two = non_zero.at(middle_index);

    //If we've vetoed events with multiple segments per chamber, this should never overwrite informations
    segment_median_map[id] = average_two;
    segment_position_map[id] = globalPosition;

    double distToIP = sqrt(globalPosition.x() * globalPosition.x() + globalPosition.y() * globalPosition.y() +
                           globalPosition.z() * globalPosition.z());

    histos->fillProfile(chamberSerial(id),
                        average_two,
                        "timeChamber",
                        "Segment mean time",
                        601,
                        -0.5,
                        600.5,
                        -400.,
                        400.,
                        "TimeMonitoring");
    histos->fillProfileByType(id.chamber(),
                              average_two,
                              "timeChamberByType",
                              "Segment mean time by chamber",
                              id,
                              36,
                              0.5,
                              36.5,
                              -400,
                              400.,
                              "TimeMonitoring");
    histos->fill2DHist(distToIP,
                       average_two,
                       "seg_time_vs_distToIP",
                       "Segment time vs. Distance to IP",
                       80,
                       600.,
                       1400.,
                       800,
                       -400,
                       400.,
                       "TimeMonitoring");
    histos->fill2DHist(globalPosition.z(),
                       average_two,
                       "seg_time_vs_globZ",
                       "Segment time vs. z position",
                       240,
                       -1200,
                       1200,
                       800,
                       -400.,
                       400.,
                       "TimeMonitoring");
    histos->fill2DHist(fabs(globalPosition.z()),
                       average_two,
                       "seg_time_vs_absglobZ",
                       "Segment time vs. abs(z position)",
                       120,
                       0.,
                       1200.,
                       800,
                       -400.,
                       400.,
                       "TimeMonitoring");

  }  //end segment loop

  //Now that the information for each segment we're interest in is stored, it is time to go through the pairs and make plots
  map<CSCDetId, float>::const_iterator it_outer;  //for the outer loop
  map<CSCDetId, float>::const_iterator it_inner;  //for the nested inner loop
  for (it_outer = segment_median_map.begin(); it_outer != segment_median_map.end(); it_outer++) {
    CSCDetId id_outer = it_outer->first;
    float t_outer = it_outer->second;

    //begin the inner loop
    for (it_inner = segment_median_map.begin(); it_inner != segment_median_map.end(); it_inner++) {
      CSCDetId id_inner = it_inner->first;
      float t_inner = it_inner->second;

      // we're looking at ordered pairs, so combinations will be double counted
      // (chamber a, chamber b) will be counted as well as (chamber b, chamber a)
      // We will avoid (chamber a, chamber a) with the following line
      if (chamberSerial(id_outer) == chamberSerial(id_inner))
        continue;

      // Calculate expected TOF (in ns units)
      // GlobalPoint gp_outer = segment_position_map.find(id_outer)->second;
      // GlobalPoint gp_inner = segment_position_map.find(id_inner)->second;
      // GlobalVector flight = gp_outer - gp_inner; //in cm
      // float TOF = flight.mag()/30.0;             //to ns

      //Plot t(ME+) - t(ME-) for chamber pairs in the same stations and rings but opposite endcaps
      if (id_outer.endcap() == 1 && id_inner.endcap() == 2 && id_outer.station() == id_inner.station() &&
          id_outer.ring() == id_inner.ring()) {
        histos->fill1DHist(t_outer - t_inner,
                           "diff_opposite_endcaps",
                           "#Delta t [ME+]-[ME-] for chambers in same station and ring",
                           800,
                           -400.,
                           400.,
                           "TimeMonitoring");
        histos->fill1DHistByType(t_outer - t_inner,
                                 "diff_opposite_endcaps_byType",
                                 "#Delta t [ME+]-[ME-] for chambers in same station and ring",
                                 id_outer,
                                 800,
                                 -400.,
                                 400.,
                                 "TimeMonitoring");
      }

    }  //end inner loop of segment pairs
  }  //end outer loop of segment pairs

  //if the digis, return here
  if (!useDigis)
    return;

  //looking for the global trigger number
  vector<L1MuGMTReadoutRecord> L1Mrec = pCollection->getRecords();
  vector<L1MuGMTReadoutRecord>::const_iterator igmtrr;
  int L1GMT_BXN = -100;
  bool has_CSCTrigger = false;
  bool has_beamHaloTrigger = false;
  for (igmtrr = L1Mrec.begin(); igmtrr != L1Mrec.end(); igmtrr++) {
    std::vector<L1MuRegionalCand>::const_iterator iter1;
    std::vector<L1MuRegionalCand> rmc;
    // CSC
    int icsc = 0;
    rmc = igmtrr->getCSCCands();
    for (iter1 = rmc.begin(); iter1 != rmc.end(); iter1++) {
      if (!(*iter1).empty()) {
        icsc++;
        int kQuality = (*iter1).quality();  // kQuality = 1 means beam halo
        if (kQuality == 1)
          has_beamHaloTrigger = true;
      }
    }
    if (igmtrr->getBxInEvent() == 0 && icsc > 0) {
      //printf("L1 CSCCands exist.  L1MuGMTReadoutRecord BXN = %d \n", igmtrr->getBxNr());
      L1GMT_BXN = igmtrr->getBxNr();
      has_CSCTrigger = true;
    } else if (igmtrr->getBxInEvent() == 0) {
      //printf("L1 CSCCands do not exist.  L1MuGMTReadoutRecord BXN = %d \n", igmtrr->getBxNr());
      L1GMT_BXN = igmtrr->getBxNr();
    }
  }

  // *************************************************
  // *** ALCT Digis **********************************
  // *************************************************

  int n_alcts = 0;
  map<CSCDetId, int> ALCT_KeyWG_map;  //structure for storing the key wire group for the first ALCT for each chamber
  for (CSCALCTDigiCollection::DigiRangeIterator j = alcts->begin(); j != alcts->end(); j++) {
    const CSCALCTDigiCollection::Range& range = (*j).second;
    const CSCDetId& idALCT = (*j).first;
    for (CSCALCTDigiCollection::const_iterator digiIt = range.first; digiIt != range.second; ++digiIt) {
      // Valid digi in the chamber (or in neighbouring chamber)
      if ((*digiIt).isValid()) {
        n_alcts++;
        histos->fill1DHist((*digiIt).getBX(), "ALCT_getBX", "ALCT.getBX()", 11, -0.5, 10.5, "TimeMonitoring");
        histos->fill1DHist(
            (*digiIt).getFullBX(), "ALCT_getFullBX", "ALCT.getFullBX()", 3601, -0.5, 3600.5, "TimeMonitoring");
        //if we don't already have digi information stored for this chamber, then we fill it
        if (ALCT_KeyWG_map.find(idALCT.chamberId()) == ALCT_KeyWG_map.end()) {
          ALCT_KeyWG_map[idALCT.chamberId()] = (*digiIt).getKeyWG();
          //printf("I did fill ALCT info for Chamber %d %d %d %d \n",idALCT.chamberId().endcap(), idALCT.chamberId().station(), idALCT.chamberId().ring(), idALCT.chamberId().chamber());
        }
      }
    }
  }

  // *************************************************
  // *** CLCT Digis **********************************
  // *************************************************
  int n_clcts = 0;
  map<CSCDetId, int> CLCT_getFullBx_map;  //structure for storing the pretrigger bxn for the first CLCT for each chamber
  for (CSCCLCTDigiCollection::DigiRangeIterator j = clcts->begin(); j != clcts->end(); j++) {
    const CSCCLCTDigiCollection::Range& range = (*j).second;
    const CSCDetId& idCLCT = (*j).first;
    for (CSCCLCTDigiCollection::const_iterator digiIt = range.first; digiIt != range.second; ++digiIt) {
      // Valid digi in the chamber (or in neighbouring chamber)
      if ((*digiIt).isValid()) {
        n_clcts++;
        histos->fill1DHist((*digiIt).getBX(), "CLCT_getBX", "CLCT.getBX()", 11, -0.5, 10.5, "TimeMonitoring");
        histos->fill1DHist(
            (*digiIt).getFullBX(), "CLCT_getFullBX", "CLCT.getFullBX()", 3601, -0.5, 3600.5, "TimeMonitoring");
        //if we don't already have digi information stored for this chamber, then we fill it
        if (CLCT_getFullBx_map.find(idCLCT.chamberId()) == CLCT_getFullBx_map.end()) {
          CLCT_getFullBx_map[idCLCT.chamberId()] = (*digiIt).getFullBX();
          //printf("I did fill CLCT info for Chamber %d %d %d %d \n",idCLCT.chamberId().endcap(), idCLCT.chamberId().station(), idCLCT.chamberId().ring(), idCLCT.chamberId().chamber());
        }
      }
    }
  }

  // *************************************************
  // *** CorrelatedLCT Digis *************************
  // *************************************************
  int n_correlatedlcts = 0;
  for (CSCCorrelatedLCTDigiCollection::DigiRangeIterator j = correlatedlcts->begin(); j != correlatedlcts->end(); j++) {
    const CSCCorrelatedLCTDigiCollection::Range& range = (*j).second;
    for (CSCCorrelatedLCTDigiCollection::const_iterator digiIt = range.first; digiIt != range.second; ++digiIt) {
      if ((*digiIt).isValid()) {
        n_correlatedlcts++;
        histos->fill1DHist(
            (*digiIt).getBX(), "CorrelatedLCTS_getBX", "CorrelatedLCT.getBX()", 11, -0.5, 10.5, "TimeMonitoring");
      }
    }
  }

  int nRecHits = recHits->size();
  int nSegments = cscSegments->size();
  if (has_CSCTrigger) {
    histos->fill1DHist(L1GMT_BXN, "BX_L1CSCCand", "BX of L1 CSC Cand", 4001, -0.5, 4000.5, "TimeMonitoring");
    histos->fill2DHist(L1GMT_BXN,
                       n_alcts,
                       "n_ALCTs_v_BX_L1CSCCand",
                       "Number of ALCTs vs. BX of L1 CSC Cand",
                       4001,
                       -0.5,
                       4000.5,
                       51,
                       -0.5,
                       50.5,
                       "TimeMonitoring");
    histos->fill2DHist(L1GMT_BXN,
                       n_clcts,
                       "n_CLCTs_v_BX_L1CSCCand",
                       "Number of CLCTs vs. BX of L1 CSC Cand",
                       4001,
                       -0.5,
                       4000.5,
                       51,
                       -0.5,
                       50.5,
                       "TimeMonitoring");
    histos->fill2DHist(L1GMT_BXN,
                       n_correlatedlcts,
                       "n_CorrelatedLCTs_v_BX_L1CSCCand",
                       "Number of CorrelatedLCTs vs. BX of L1 CSC Cand",
                       4001,
                       -0.5,
                       4000.5,
                       51,
                       -0.5,
                       50.5,
                       "TimeMonitoring");
    histos->fill2DHist(L1GMT_BXN,
                       nRecHits,
                       "n_RecHits_v_BX_L1CSCCand",
                       "Number of RecHits vs. BX of L1 CSC Cand",
                       4001,
                       -0.5,
                       4000.5,
                       101,
                       -0.5,
                       100.5,
                       "TimeMonitoring");
    histos->fill2DHist(L1GMT_BXN,
                       nSegments,
                       "n_Segments_v_BX_L1CSCCand",
                       "Number of Segments vs. BX of L1 CSC Cand",
                       4001,
                       -0.5,
                       4000.5,
                       51,
                       -0.5,
                       50.5,
                       "TimeMonitoring");
  }
  if (has_CSCTrigger && has_beamHaloTrigger) {
    histos->fill1DHist(
        L1GMT_BXN, "BX_L1CSCCand_w_beamHalo", "BX of L1 CSC (w beamHalo bit)", 4001, -0.5, 4000.5, "TimeMonitoring");
    histos->fill2DHist(L1GMT_BXN,
                       n_alcts,
                       "n_ALCTs_v_BX_L1CSCCand_w_beamHalo",
                       "Number of ALCTs vs. BX of L1 CSC Cand (w beamHalo bit)",
                       4001,
                       -0.5,
                       4000.5,
                       51,
                       -0.5,
                       50.5,
                       "TimeMonitoring");
    histos->fill2DHist(L1GMT_BXN,
                       n_clcts,
                       "n_CLCTs_v_BX_L1CSCCand_w_beamHalo",
                       "Number of CLCTs vs. BX of L1 CSC Cand (w beamHalo bit)",
                       4001,
                       -0.5,
                       4000.5,
                       51,
                       -0.5,
                       50.5,
                       "TimeMonitoring");
    histos->fill2DHist(L1GMT_BXN,
                       n_correlatedlcts,
                       "n_CorrelatedLCTs_v_BX_L1CSCCand_w_beamHalo",
                       "Number of CorrelatedLCTs vs. BX of L1 CSC Cand (w beamHalo bit)",
                       4001,
                       -0.5,
                       4000.5,
                       51,
                       -0.5,
                       50.5,
                       "TimeMonitoring");
    histos->fill2DHist(L1GMT_BXN,
                       nRecHits,
                       "n_RecHits_v_BX_L1CSCCand_w_beamHalo",
                       "Number of RecHits vs. BX of L1 CSC Cand (w beamHalo bit)",
                       4001,
                       -0.5,
                       4000.5,
                       101,
                       -0.5,
                       100.5,
                       "TimeMonitoring");
    histos->fill2DHist(L1GMT_BXN,
                       nSegments,
                       "n_Segments_v_BX_L1CSCCand_w_beamHalo",
                       "Number of Segments vs. BX of L1 CSC Cand (w beamHalo bit)",
                       4001,
                       -0.5,
                       4000.5,
                       51,
                       -0.5,
                       50.5,
                       "TimeMonitoring");
  }

  // *******************************************************************
  // Get information from the TMB header.
  // Can this eventually come out of the digis?
  // Taking code from EventFilter/CSCRawToDigis/CSCDCCUnpacker.cc
  // *******************************************************************

  edm::ESHandle<CSCCrateMap> hcrate = eventSetup.getHandle(crateToken_);
  const CSCCrateMap* pcrate = hcrate.product();

  edm::Handle<FEDRawDataCollection> rawdata;
  event.getByToken(rd_token, rawdata);
  // If set selective unpacking mode
  // hardcoded examiner mask below to check for DCC and DDU level errors will be used first
  // then examinerMask for CSC level errors will be used during unpacking of each CSC block
  unsigned long dccBinCheckMask = 0x06080016;
  unsigned int examinerMask = 0x1FEBF3F6;
  unsigned int errorMask = 0x0;

  for (int id = FEDNumbering::MINCSCFEDID; id <= FEDNumbering::MAXCSCFEDID; ++id) {
    // loop over DCCs

    const FEDRawData& fedData = rawdata->FEDData(id);
    unsigned long length = fedData.size();

    if (length >= 32) {  
      std::stringstream examiner_out, examiner_err;
      CSCDCCExaminer* examiner = new CSCDCCExaminer();
      if (examinerMask & 0x40000)
        examiner->crcCFEB(true);
      if (examinerMask & 0x8000)
        examiner->crcTMB(true);
      if (examinerMask & 0x0400)
        examiner->crcALCT(true);
      examiner->setMask(examinerMask);
      const short unsigned int* data = (short unsigned int*)fedData.data();

      bool goodEvent;
      if (examiner->check(data, long(fedData.size() / 2)) < 0) {
        goodEvent = false;
      } else {
        goodEvent = !(examiner->errors() & dccBinCheckMask);
      }

      if (goodEvent) {
        CSCDCCExaminer* ptrExaminer = examiner;
        CSCDCCEventData dccData((short unsigned int*)fedData.data(), ptrExaminer);

        const std::vector<CSCDDUEventData>& dduData = dccData.dduData();

        CSCDetId layer(1, 1, 1, 1, 1);

        for (unsigned int iDDU = 0; iDDU < dduData.size(); ++iDDU) {  // loop over DDUs
          if (dduData[iDDU].trailer().errorstat() & errorMask) {
            LogTrace("CSCDCCUnpacker|CSCRawToDigi") << "DDU# " << iDDU << " has serious error - no digis unpacked! "
                                                    << std::hex << dduData[iDDU].trailer().errorstat();
            continue;  // to next iteration of DDU loop
          }

          const std::vector<CSCEventData>& cscData = dduData[iDDU].cscData();
          for (unsigned int iCSC = 0; iCSC < cscData.size(); ++iCSC) {  // loop over CSCs

            int vmecrate = cscData[iCSC].dmbHeader()->crateID();
            int dmb = cscData[iCSC].dmbHeader()->dmbID();

            // SKIPPING MTCC redefinition of vmecrate

            int icfeb = 0;   
            int ilayer = 0;  

            if ((vmecrate >= 1) && (vmecrate <= 60) && (dmb >= 1) && (dmb <= 10) && (dmb != 6)) {
              layer = pcrate->detId(vmecrate, dmb, icfeb, ilayer);
            } else {
              LogTrace("CSCTimingAlignment|CSCDCCUnpacker|CSCRawToDigi") << " detID input out of range!!! ";
              LogTrace("CSCTimingAlignment|CSCDCCUnpacker|CSCRawToDigi")
                  << " skipping chamber vme= " << vmecrate << " dmb= " << dmb;
              continue;  // to next iteration of iCSC loop
            }

            int nalct = cscData[iCSC].dmbHeader()->nalct();
            bool goodALCT = false;
            //if (nalct&&(cscData[iCSC].dataPresent>>6&0x1)==1) {
            if (nalct && cscData[iCSC].alctHeader()) {
              if (cscData[iCSC].alctHeader()->check()) {
                goodALCT = true;
              }
            }

            int nclct = cscData[iCSC].dmbHeader()->nclct();
            bool goodTMB = false;
            if (nclct && cscData[iCSC].tmbData()) {
              if (cscData[iCSC].tmbHeader()->check()) {
                if (cscData[iCSC].comparatorData()->check())
                  goodTMB = true;
              }
            }

            if (goodTMB && goodALCT) {
              if (ALCT_KeyWG_map.find(layer) == ALCT_KeyWG_map.end()) {
                printf("no ALCT info for Chamber %d %d %d %d \n",
                       layer.endcap(),
                       layer.station(),
                       layer.ring(),
                       layer.chamber());
                continue;
              }
              if (CLCT_getFullBx_map.find(layer) == CLCT_getFullBx_map.end()) {
                printf("no CLCT info for Chamber %d %d %d %d \n",
                       layer.endcap(),
                       layer.station(),
                       layer.ring(),
                       layer.chamber());
                continue;
              }
              int ALCT0Key = ALCT_KeyWG_map.find(layer)->second;
              int CLCTPretrigger = CLCT_getFullBx_map.find(layer)->second;

              const CSCTMBHeader* tmbHead = cscData[iCSC].tmbHeader();

              histos->fill1DHistByStation(tmbHead->BXNCount(),
                                          "TMB_BXNCount",
                                          "TMB_BXNCount",
                                          layer.chamberId(),
                                          3601,
                                          -0.5,
                                          3600.5,
                                          "TimeMonitoring");
              histos->fill1DHistByStation(tmbHead->ALCTMatchTime(),
                                          "TMB_ALCTMatchTime",
                                          "TMB_ALCTMatchTime",
                                          layer.chamberId(),
                                          7,
                                          -0.5,
                                          6.5,
                                          "TimeMonitoring");

              histos->fill1DHist(
                  tmbHead->BXNCount(), "TMB_BXNCount", "TMB_BXNCount", 3601, -0.5, 3600.5, "TimeMonitoring");
              histos->fill1DHist(
                  tmbHead->ALCTMatchTime(), "TMB_ALCTMatchTime", "TMB_ALCTMatchTime", 7, -0.5, 6.5, "TimeMonitoring");

              histos->fill1DHistByType(tmbHead->ALCTMatchTime(),
                                       "TMB_ALCTMatchTime",
                                       "TMB_ALCTMatchTime",
                                       layer.chamberId(),
                                       7,
                                       -0.5,
                                       6.5,
                                       "TimeMonitoring");

              histos->fillProfile(chamberSerial(layer.chamberId()),
                                  tmbHead->ALCTMatchTime(),
                                  "prof_TMB_ALCTMatchTime",
                                  "prof_TMB_ALCTMatchTime",
                                  601,
                                  -0.5,
                                  600.5,
                                  -0.5,
                                  7.5,
                                  "TimeMonitoring");
              histos->fillProfile(ALCT0Key,
                                  tmbHead->ALCTMatchTime(),
                                  "prof_TMB_ALCTMatchTime_v_ALCT0KeyWG",
                                  "prof_TMB_ALCTMatchTime_v_ALCT0KeyWG",
                                  128,
                                  -0.5,
                                  127.5,
                                  0,
                                  7,
                                  "TimeMonitoring");
              histos->fillProfileByType(ALCT0Key,
                                        tmbHead->ALCTMatchTime(),
                                        "prf_TMB_ALCTMatchTime_v_ALCT0KeyWG",
                                        "prf_TMB_ALCTMatchTime_v_ALCT0KeyWG",
                                        layer.chamberId(),
                                        128,
                                        -0.5,
                                        127.5,
                                        0,
                                        7,
                                        "TimeMonitoring");

              //Attempt to make a few sum plots

              int TMB_ALCT_rel_L1A = tmbHead->BXNCount() - (CLCTPretrigger + 2 + tmbHead->ALCTMatchTime());
              if (TMB_ALCT_rel_L1A > 3563)
                TMB_ALCT_rel_L1A = TMB_ALCT_rel_L1A - 3564;
              if (TMB_ALCT_rel_L1A < 0)
                TMB_ALCT_rel_L1A = TMB_ALCT_rel_L1A + 3564;

              //Plot TMB_ALCT_rel_L1A
              histos->fill1DHist(
                  TMB_ALCT_rel_L1A, "h1D_TMB_ALCT_rel_L1A", "h1D_TMB_ALCT_rel_L1A", 11, 144.5, 155.5, "TimeMonitoring");
              histos->fill2DHist(chamberSerial(layer.chamberId()),
                                 TMB_ALCT_rel_L1A,
                                 "h2D_TMB_ALCT_rel_L1A",
                                 "h2D_TMB_ALCT_rel_L1A",
                                 601,
                                 -0.5,
                                 600.5,
                                 11,
                                 144.5,
                                 155.5,
                                 "TimeMonitoring");
              histos->fill2DHist(ringSerial(layer.chamberId()),
                                 TMB_ALCT_rel_L1A,
                                 "h2D_TMB_ALCT_rel_L1A_by_ring",
                                 "h2D_TMB_ALCT_rel_L1A_by_ring",
                                 19,
                                 -9.5,
                                 9.5,
                                 11,
                                 144.5,
                                 155.5,
                                 "TimeMonitoring");
              histos->fillProfile(chamberSerial(layer.chamberId()),
                                  TMB_ALCT_rel_L1A,
                                  "prof_TMB_ALCT_rel_L1A",
                                  "prof_TMB_ALCT_rel_L1A",
                                  601,
                                  -0.5,
                                  600.5,
                                  145,
                                  155,
                                  "TimeMonitoring");
              histos->fillProfile(ringSerial(layer.chamberId()),
                                  TMB_ALCT_rel_L1A,
                                  "prof_TMB_ALCT_rel_L1A_by_ring",
                                  "prof_TMB_ALCT_rel_L1A_by_ring",
                                  19,
                                  -9.5,
                                  9.5,
                                  145,
                                  155,
                                  "TimeMonitoring");

              histos->fill2DHist(ALCT0Key,
                                 TMB_ALCT_rel_L1A,
                                 "h2D_TMB_ALCT_rel_L1A_v_ALCT0KeyWG",
                                 "h2D_TMB_ALCT_rel_L1A_v_ALCT0KeyWG",
                                 128,
                                 -0.5,
                                 127.5,
                                 11,
                                 144.5,
                                 155.5,
                                 "TimeMonitoring");
              histos->fillProfile(ALCT0Key,
                                  TMB_ALCT_rel_L1A,
                                  "prof_TMB_ALCT_rel_L1A_v_ALCT0KeyWG",
                                  "prof_TMB_ALCT_rel_L1A_v_ALCT0KeyWG",
                                  128,
                                  -0.5,
                                  127.5,
                                  145,
                                  155,
                                  "TimeMonitoring");
              histos->fillProfileByType(ALCT0Key,
                                        TMB_ALCT_rel_L1A,
                                        "prf_TMB_ALCT_rel_L1A_v_ALCT0KeyWG",
                                        "prf_TMB_ALCT_rel_L1A_v_ALCT0KeyWG",
                                        layer.chamberId(),
                                        128,
                                        -0.5,
                                        127.5,
                                        145,
                                        155,
                                        "TimeMonitoring");
            }

          }  // end CSCData loop
        }  // end ddu data loop
      }  // end if goodEvent
      if (examiner != nullptr)
        delete examiner;
    }  // end if non-zero fed data
  }  // end DCC loop for NON-REFERENCE
}

void CSCValidation::beginJob() { std::cout << "CSCValidation starting..." << std::endl; }

void CSCValidation::endJob() { std::cout << "CSCValidation: Events analyzed " << nEventsAnalyzed << std::endl; }

DEFINE_FWK_MODULE(CSCValidation);