DTNoiseCalibration.cc

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/*
 *  See header file for a description of this class.
 *
 *  $Date: 2011/08/21 18:33:39 $
 *  $Revision: 1.18 $
 *  \author G. Mila - INFN Torino
 *          A. Vilela Pereira - INFN Torino 
 */

#include "DTNoiseCalibration.h"

// Framework
#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/Run.h"
#include "FWCore/Framework/interface/EventSetup.h" 
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

// Geometry
#include "Geometry/DTGeometry/interface/DTLayer.h"
#include "Geometry/DTGeometry/interface/DTGeometry.h"
#include "Geometry/DTGeometry/interface/DTTopology.h"
#include "Geometry/Records/interface/MuonGeometryRecord.h"

// Digis
#include "DataFormats/DTDigi/interface/DTDigi.h"
#include "DataFormats/DTDigi/interface/DTDigiCollection.h"
#include "CondFormats/DataRecord/interface/DTStatusFlagRcd.h"
#include "CondFormats/DTObjects/interface/DTStatusFlag.h"
#include "CondFormats/DTObjects/interface/DTReadOutMapping.h"

// Database
#include "CondFormats/DTObjects/interface/DTTtrig.h"
#include "CondFormats/DataRecord/interface/DTTtrigRcd.h"

#include "CalibMuon/DTCalibration/interface/DTCalibDBUtils.h"

#include "TH2F.h"
#include "TFile.h"

using namespace edm;
using namespace std;

DTNoiseCalibration::DTNoiseCalibration(const edm::ParameterSet& pset):
  digiLabel_( pset.getParameter<InputTag>("digiLabel") ),
  useTimeWindow_( pset.getParameter<bool>("useTimeWindow") ),
  triggerWidth_( pset.getParameter<double>("triggerWidth") ),
  timeWindowOffset_( pset.getParameter<int>("timeWindowOffset") ),
  maximumNoiseRate_( pset.getParameter<double>("maximumNoiseRate") ),
  useAbsoluteRate_( pset.getParameter<bool>("useAbsoluteRate") ), 
  readDB_(true), defaultTtrig_(0), 
  dbLabel_( pset.getUntrackedParameter<string>("dbLabel", "") ),
  //fastAnalysis_( pset.getParameter<bool>("fastAnalysis", true) ),
  wireIdWithHisto_( std::vector<DTWireId>() ),
  lumiMax_(3000)
  {

  // Get the debug parameter for verbose output
  //debug = ps.getUntrackedParameter<bool>("debug");
  /*// The analysis type
  // The wheel & sector interested for the time-dependent analysis
  wh = ps.getUntrackedParameter<int>("wheel", 0);
  sect = ps.getUntrackedParameter<int>("sector", 6);*/

  if( pset.exists("defaultTtrig") ){
     readDB_ = false;
     defaultTtrig_ = pset.getParameter<int>("defaultTtrig");
  }

  if( pset.exists("cellsWithHisto") ){
     vector<string> cellsWithHisto = pset.getParameter<vector<string> >("cellsWithHisto");
     for(vector<string>::const_iterator cell = cellsWithHisto.begin(); cell != cellsWithHisto.end(); ++cell){
        //FIXME: Use regex to check whether format is right
        if( (*cell) != "" && (*cell) != "None"){
           stringstream linestr;
           int wheel,station,sector,sl,layer,wire;
           linestr << (*cell);
           linestr >> wheel >> station >> sector >> sl >> layer >> wire;
           wireIdWithHisto_.push_back(DTWireId(wheel,station,sector,sl,layer,wire));
        }
     }
  }

  // The root file which will contain the histos
  string rootFileName = pset.getUntrackedParameter<string>("rootFileName","noise.root");
  rootFile_ = new TFile(rootFileName.c_str(), "RECREATE");
  rootFile_->cd();
}

void DTNoiseCalibration::beginJob() {
  LogVerbatim("Calibration") << "[DTNoiseCalibration]: Begin job";
  
  nevents_ = 0;
  
  TH1::SetDefaultSumw2(true);
  int numBin = (triggerWidth_*32/25)/50;
  hTDCTriggerWidth_ = new TH1F("TDC_Time_Distribution", "TDC_Time_Distribution", numBin, 0, triggerWidth_*32/25);
}

void DTNoiseCalibration::beginRun(const edm::Run& run, const edm::EventSetup& setup ) {

  // Get the DT Geometry
  setup.get<MuonGeometryRecord>().get(dtGeom_);

  // tTrig 
  if( readDB_ ) setup.get<DTTtrigRcd>().get(dbLabel_,tTrigMap_);

  runBeginTime_ = time_t(run.beginTime().value()>>32);
  runEndTime_ = time_t(run.endTime().value()>>32);
  /*
  nevents = 0;
  counter = 0;

  // TDC time distribution
  int numBin = (triggerWidth_*(32/25))/50;
  hTDCTriggerWidth = new TH1F("TDC_Time_Distribution", "TDC_Time_Distribution", numBin, 0, triggerWidth_*(32/25));*/

}

void DTNoiseCalibration::analyze(const edm::Event& event, const edm::EventSetup& setup){
  ++nevents_;
  
  // Get the digis from the event
  Handle<DTDigiCollection> dtdigis;
  event.getByLabel(digiLabel_, dtdigis);

  /*TH1F *hOccupancyHisto;
  TH2F *hEvtPerWireH;
  string Histo2Name;*/

  //RunNumber_t runNumber = event.id().run(); 
  time_t eventTime = time_t(event.time().value()>>32);
  unsigned int lumiSection = event.luminosityBlock();

  // Loop over digis
  DTDigiCollection::DigiRangeIterator dtLayerId_It;
  for (dtLayerId_It=dtdigis->begin(); dtLayerId_It!=dtdigis->end(); ++dtLayerId_It){
     // Define time window
     float upperLimit = 0.;
     if(useTimeWindow_){
        if( readDB_ ){
           float tTrig,tTrigRMS,kFactor;
           DTSuperLayerId slId = ((*dtLayerId_It).first).superlayerId();
           int status = tTrigMap_->get( slId, tTrig, tTrigRMS, kFactor, DTTimeUnits::counts );
           if(status != 0) throw cms::Exception("DTNoiseCalibration") << "Could not find tTrig entry in DB for" << slId << endl;
           upperLimit = tTrig - timeWindowOffset_;
        } else {
           upperLimit = defaultTtrig_ - timeWindowOffset_;
        }
     }

     double triggerWidth_s = 0.;
     if(useTimeWindow_) triggerWidth_s = ( (upperLimit*25)/32 )/1e9;
     else               triggerWidth_s = double(triggerWidth_/1e9);
     LogTrace("Calibration") << ((*dtLayerId_It).first).superlayerId() << " Trigger width (s): " << triggerWidth_s;

     for (DTDigiCollection::const_iterator digiIt = ((*dtLayerId_It).second).first;
     digiIt!=((*dtLayerId_It).second).second; ++digiIt){

        //Check the TDC trigger width
        int tdcTime = (*digiIt).countsTDC();
        if( !useTimeWindow_ ){
       if( ( ((float)tdcTime*25)/32 ) > triggerWidth_ ){
              LogError("Calibration") << "Digi has a TDC time (ns) higher than the pre-defined TDC trigger width: " << ((float)tdcTime*25)/32;
              continue;
           }
        }   

        hTDCTriggerWidth_->Fill(tdcTime);

        if( useTimeWindow_ && tdcTime > upperLimit) continue;

        /*LogTrace("Calibration") << "TDC time (ns): " << ((float)tdcTime*25)/32
                                <<" --- trigger width (ns): " << ((float)upperLimit*25)/32;*/

        const DTLayerId dtLId = (*dtLayerId_It).first;
        const DTTopology& dtTopo = dtGeom_->layer(dtLId)->specificTopology();
        const int firstWire = dtTopo.firstChannel();
        const int lastWire = dtTopo.lastChannel();
        //const int nWires = dtTopo.channels();
        const int nWires = lastWire - firstWire + 1;

        // Book the occupancy histos
        if( theHistoOccupancyMap_.find(dtLId) == theHistoOccupancyMap_.end() ){
           string histoName = "DigiOccupancy_" + getLayerName(dtLId);
       rootFile_->cd();
       TH1F* hOccupancyHisto = new TH1F(histoName.c_str(), histoName.c_str(), nWires, firstWire, lastWire+1);
       LogTrace("Calibration") << "  Created occupancy Histo: " << hOccupancyHisto->GetName();
       theHistoOccupancyMap_[dtLId] = hOccupancyHisto;
        }
        theHistoOccupancyMap_[dtLId]->Fill( (*digiIt).wire(), 1./triggerWidth_s );

        // Histos vs lumi section
        const DTChamberId dtChId = dtLId.chamberId();
        if( chamberOccupancyVsLumiMap_.find(dtChId) == chamberOccupancyVsLumiMap_.end() ){
           string histoName = "OccupancyVsLumi_" + getChamberName(dtChId);
           rootFile_->cd();
           TH1F* hOccupancyVsLumiHisto = new TH1F(histoName.c_str(), histoName.c_str(), lumiMax_, 0, lumiMax_);
           LogTrace("Calibration") << "  Created occupancy histo: " << hOccupancyVsLumiHisto->GetName();
           chamberOccupancyVsLumiMap_[dtChId] = hOccupancyVsLumiHisto;
        }
        chamberOccupancyVsLumiMap_[dtChId]->Fill( lumiSection, 1./triggerWidth_s );

        const DTWireId wireId(dtLId, (*digiIt).wire());
        if( find(wireIdWithHisto_.begin(),wireIdWithHisto_.end(),wireId) != wireIdWithHisto_.end() ){
           if( theHistoOccupancyVsLumiMap_.find(wireId) == theHistoOccupancyVsLumiMap_.end() ){
              string histoName = "OccupancyVsLumi_" + getChannelName(wireId);
              rootFile_->cd();
              TH1F* hOccupancyVsLumiHisto = new TH1F(histoName.c_str(), histoName.c_str(), lumiMax_, 0, lumiMax_);
              LogTrace("Calibration") << "  Created occupancy histo: " << hOccupancyVsLumiHisto->GetName();
              theHistoOccupancyVsLumiMap_[wireId] = hOccupancyVsLumiHisto;
           }
           theHistoOccupancyVsLumiMap_[wireId]->Fill( lumiSection, 1./triggerWidth_s );
        }

        // Histos vs time
        if( chamberOccupancyVsTimeMap_.find(dtChId) == chamberOccupancyVsTimeMap_.end() ){
           string histoName = "OccupancyVsTime_" + getChamberName(dtChId);
           float secPerBin = 20.0; 
           unsigned int nBins = ( (unsigned int)(runEndTime_ - runBeginTime_) )/secPerBin;
           rootFile_->cd(); 
           TH1F* hOccupancyVsTimeHisto = new TH1F(histoName.c_str(), histoName.c_str(),
                                                                     nBins, (unsigned int)runBeginTime_,
                                                                            (unsigned int)runEndTime_);
           for(int k = 0; k < hOccupancyVsTimeHisto->GetNbinsX(); ++k){
              if( k%10 == 0 ){
                 unsigned int binLowEdge = hOccupancyVsTimeHisto->GetBinLowEdge(k+1);
                 time_t timeValue = time_t(binLowEdge); 
                 hOccupancyVsTimeHisto->GetXaxis()->SetBinLabel( (k+1),ctime(&timeValue) );
              }
           }
           size_t lastBin = hOccupancyVsTimeHisto->GetNbinsX();
           unsigned int binUpperEdge = hOccupancyVsTimeHisto->GetBinLowEdge(lastBin) +
                                       hOccupancyVsTimeHisto->GetBinWidth(lastBin);
           time_t timeValue = time_t(binUpperEdge);
           hOccupancyVsTimeHisto->GetXaxis()->SetBinLabel( (lastBin),ctime(&timeValue) ); 

           LogTrace("Calibration") << "  Created occupancy histo: " << hOccupancyVsTimeHisto->GetName();
           chamberOccupancyVsTimeMap_[dtChId] = hOccupancyVsTimeHisto; 
        }
        chamberOccupancyVsTimeMap_[dtChId]->Fill( (unsigned int)eventTime, 1./triggerWidth_s );               

        /*// Book the digi event plot every 1000 events if the analysis is not "fast" and if is the correct sector
    if(!fastAnalysis &&
       dtLId.superlayerId().chamberId().wheel()==wh &&
       dtLId.superlayerId().chamberId().sector()==sect) {
      if(theHistoEvtPerWireMap.find(dtLId) == theHistoEvtPerWireMap.end() ||
         (theHistoEvtPerWireMap.find(dtLId) != theHistoEvtPerWireMap.end() &&
          skippedPlot[dtLId] != counter)){ 
        skippedPlot[dtLId] = counter;
        stringstream toAppend; toAppend << counter;
        Histo2Name = "DigiPerWirePerEvent_" + getLayerName(dtLId) + "_" + toAppend.str();
        theFile->cd();
        hEvtPerWireH = new TH2F(Histo2Name.c_str(), Histo2Name.c_str(), 1000,0.5,1000.5,nWires, firstWire, lastWire+1);
        if(hEvtPerWireH){
          if(debug)
        cout << "  New Histo with the number of digi per evt per wire: " << hEvtPerWireH->GetName() << endl;
          theHistoEvtPerWireMap[dtLId]=hEvtPerWireH;
        }
      }
    }*/
     }
  }
    
  /*//Fill the plot of the number of digi per event per wire
  std::map<int,int > DigiPerWirePerEvent;
  // LOOP OVER ALL THE CHAMBERS
  vector<DTChamber*>::const_iterator ch_it = dtGeom->chambers().begin();
  vector<DTChamber*>::const_iterator ch_end = dtGeom->chambers().end();
  for (; ch_it != ch_end; ++ch_it) {
    DTChamberId ch = (*ch_it)->id();
    vector<const DTSuperLayer*>::const_iterator sl_it = (*ch_it)->superLayers().begin(); 
    vector<const DTSuperLayer*>::const_iterator sl_end = (*ch_it)->superLayers().end();
    // Loop over the SLs
    for(; sl_it != sl_end; ++sl_it) {
      DTSuperLayerId sl = (*sl_it)->id();
      vector<const DTLayer*>::const_iterator l_it = (*sl_it)->layers().begin(); 
      vector<const DTLayer*>::const_iterator l_end = (*sl_it)->layers().end();
      // Loop over the Ls
      for(; l_it != l_end; ++l_it) {
    DTLayerId layerId = (*l_it)->id();
    
    // Get the number of wires
    const DTTopology& dtTopo = dtGeom->layer(layerId)->specificTopology();
    const int firstWire = dtTopo.firstChannel();
    const int lastWire = dtTopo.lastChannel();
      
    if (theHistoEvtPerWireMap.find(layerId) != theHistoEvtPerWireMap.end() &&
        skippedPlot[layerId] == counter) {
      
      for (int wire=firstWire; wire<=lastWire; wire++) {
        DigiPerWirePerEvent[wire]= 0;
      } 
      // loop over all the digis of the event
      DTDigiCollection::Range layerDigi= dtdigis->get(layerId);
      for (DTDigiCollection::const_iterator digi = layerDigi.first;
           digi!=layerDigi.second;
           ++digi){
        if((cosmicRun && (*digi).countsTDC()<upperLimit) || (!cosmicRun))
          DigiPerWirePerEvent[(*digi).wire()]+=1;
      }
      // fill the digi event histo
      for (int wire=firstWire; wire<=lastWire; wire++) {
        theFile->cd();
        int histoEvents = nevents - (counter*1000);
        theHistoEvtPerWireMap[layerId]->Fill(histoEvents,wire,DigiPerWirePerEvent[wire]);
      }
    }
      } //Loop Ls
    } //Loop SLs
  } //Loop chambers
  
  
  if(nevents % 1000 == 0) {
    counter++;
    // save the digis event plot on file
    for(map<DTLayerId,  TH2F* >::const_iterator lHisto = theHistoEvtPerWireMap.begin();
    lHisto != theHistoEvtPerWireMap.end();
    lHisto++) {
      theFile->cd();
      if((*lHisto).second)
    (*lHisto).second->Write();
    }
    theHistoEvtPerWireMap.clear();
  }*/
  
}

void DTNoiseCalibration::endJob(){

  //LogVerbatim("Calibration") << "[DTNoiseCalibration] endjob called!";
  LogVerbatim("Calibration") << "[DTNoiseCalibration] Total number of events analyzed: " << nevents_;

  // Save the TDC digi plot
  rootFile_->cd();
  hTDCTriggerWidth_->Write();

  double normalization = 1./double(nevents_);

  for(map<DTWireId, TH1F*>::const_iterator wHisto = theHistoOccupancyVsLumiMap_.begin();
                                           wHisto != theHistoOccupancyVsLumiMap_.end(); ++wHisto){
     (*wHisto).second->Scale(normalization);
     (*wHisto).second->Write();
  }
  
  for(map<DTChamberId, TH1F*>::const_iterator chHisto = chamberOccupancyVsLumiMap_.begin();
                                              chHisto != chamberOccupancyVsLumiMap_.end(); ++chHisto){
     (*chHisto).second->Scale(normalization);
     (*chHisto).second->Write();
  }

  for(map<DTChamberId, TH1F*>::const_iterator chHisto = chamberOccupancyVsTimeMap_.begin();
                                              chHisto != chamberOccupancyVsTimeMap_.end(); ++chHisto){
     (*chHisto).second->Scale(normalization);
     (*chHisto).second->Write();
  }

  // Save on file the occupancy histos and write the list of noisy cells
  DTStatusFlag *statusMap = new DTStatusFlag();
  for(map<DTLayerId, TH1F*>::const_iterator lHisto = theHistoOccupancyMap_.begin();
      lHisto != theHistoOccupancyMap_.end();
      ++lHisto){
     /*double triggerWidth_s = 0.;
     if( useTimeWindow_ ){
        double triggerWidth_ns = 0.;
        if( readDB_ ){
           float tTrig, tTrigRMS, kFactor;
           DTSuperLayerId slId = ((*lHisto).first).superlayerId();
           int status = tTrigMap_->get( slId, tTrig, tTrigRMS, kFactor, DTTimeUnits::counts );
           if(status != 0) throw cms::Exception("DTNoiseCalibration") << "Could not find tTrig entry in DB for" << slId << endl;
           triggerWidth_ns = tTrig - timeWindowOffset_;
        } else{
           triggerWidth_ns = defaultTtrig_ - timeWindowOffset_;
        }
        triggerWidth_ns = (triggerWidth_ns*25)/32;
        triggerWidth_s = triggerWidth_ns/1e9;
     } else{
        triggerWidth_s = double(triggerWidth_/1e9);
     }
     LogTrace("Calibration") << (*lHisto).second->GetName() << " trigger width (s): " << triggerWidth_s;*/

     //double normalization = 1./(nevents_*triggerWidth_s);
     if((*lHisto).second){
        (*lHisto).second->Scale(normalization);
        rootFile_->cd();
        (*lHisto).second->Write();
        const DTTopology& dtTopo = dtGeom_->layer((*lHisto).first)->specificTopology();
        const int firstWire = dtTopo.firstChannel();
        const int lastWire = dtTopo.lastChannel();
        //const int nWires = dtTopo.channels();
        const int nWires = lastWire - firstWire + 1;
        // Find average in layer
        double averageRate = 0.;  
        for(int bin = 1; bin <= (*lHisto).second->GetNbinsX(); ++bin)
           averageRate += (*lHisto).second->GetBinContent(bin);

        if(nWires) averageRate /= nWires;  
        LogTrace("Calibration") << "  Average rate = " << averageRate;

        for(int i_wire = firstWire; i_wire <= lastWire; ++i_wire){
       // From definition of "noisy cell"
           int bin = i_wire - firstWire + 1;
           double channelRate = (*lHisto).second->GetBinContent(bin);
           double rateOffset = (useAbsoluteRate_) ? 0. : averageRate;
       if( (channelRate - rateOffset) > maximumNoiseRate_ ){
          DTWireId wireID((*lHisto).first, i_wire);
          statusMap->setCellNoise(wireID,1);
              LogVerbatim("Calibration") << ">>> Channel noisy: " << wireID;
       }
        }
     }
  }
  LogVerbatim("Calibration") << "Writing noise map object to DB";
  string record = "DTStatusFlagRcd";
  DTCalibDBUtils::writeToDB<DTStatusFlag>(record, statusMap);
}

DTNoiseCalibration::~DTNoiseCalibration(){
  rootFile_->Close();
}

string DTNoiseCalibration::getChannelName(const DTWireId& wId) const{
  stringstream channelName;
  channelName << "Wh" << wId.wheel() << "_St" << wId.station() << "_Sec" << wId.sector()
          << "_SL" << wId.superlayer() << "_L" << wId.layer() << "_W"<< wId.wire();

  return channelName.str();
}

string DTNoiseCalibration::getLayerName(const DTLayerId& lId) const{

  const  DTSuperLayerId dtSLId = lId.superlayerId();
  const  DTChamberId dtChId = dtSLId.chamberId(); 
  stringstream Layer; Layer << lId.layer();
  stringstream superLayer; superLayer << dtSLId.superlayer();
  stringstream wheel; wheel << dtChId.wheel();  
  stringstream station; station << dtChId.station();    
  stringstream sector; sector << dtChId.sector();
  
  string layerName = 
    "W" + wheel.str()
    + "_St" + station.str() 
    + "_Sec" + sector.str() 
    + "_SL" + superLayer.str()
    + "_L" + Layer.str();
  
  return layerName;
}

string DTNoiseCalibration::getSuperLayerName(const DTSuperLayerId& dtSLId) const{

  const  DTChamberId dtChId = dtSLId.chamberId(); 
  stringstream superLayer; superLayer << dtSLId.superlayer();
  stringstream wheel; wheel << dtChId.wheel();  
  stringstream station; station << dtChId.station();    
  stringstream sector; sector << dtChId.sector();
  
  string superLayerName = 
    "W" + wheel.str()
    + "_St" + station.str() 
    + "_Sec" + sector.str() 
    + "_SL" + superLayer.str();
  
  return superLayerName;
}

string DTNoiseCalibration::getChamberName(const DTChamberId& dtChId) const{

  stringstream wheel; wheel << dtChId.wheel();
  stringstream station; station << dtChId.station();
  stringstream sector; sector << dtChId.sector();

  string chamberName =
    "W" + wheel.str()
    + "_St" + station.str()
    + "_Sec" + sector.str();

  return chamberName;
}