/afs/cern.ch/work/a/aaltunda/public/www/CMSSW_6_2_5/src/DQM/Physics/src/EwkElecDQM.cc

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#include "DQM/Physics/src/EwkElecDQM.h"

#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "DataFormats/Common/interface/Handle.h"

#include "FWCore/ServiceRegistry/interface/Service.h"
#include "CommonTools/UtilAlgos/interface/TFileService.h"

#include "DQMServices/Core/interface/DQMStore.h"
#include "DQMServices/Core/interface/MonitorElement.h"

#include "DataFormats/TrackReco/interface/Track.h"
#include "DataFormats/BeamSpot/interface/BeamSpot.h"
#include "DataFormats/VertexReco/interface/Vertex.h"

//#include "DataFormats/MuonReco/interface/Muon.h"
#include "DataFormats/EgammaCandidates/interface/GsfElectron.h" // I guess this is the right one??
// also need Fwd.h file ???
#include "DataFormats/METReco/interface/MET.h"
#include "DataFormats/JetReco/interface/Jet.h"
//#include "DataFormats/JetReco/interface/CaloJet.h"
//#include "DataFormats/METReco/interface/CaloMET.h"
//#include "DataFormats/METReco/interface/CaloMETCollection.h"
//#include "DataFormats/METReco/interface/CaloMETFwd.h"

#include "DataFormats/GeometryVector/interface/Phi.h"

#include "FWCore/Common/interface/TriggerNames.h"
#include "FWCore/Framework/interface/Event.h"
#include "DataFormats/Common/interface/TriggerResults.h"

#include "DataFormats/Common/interface/View.h"
  
using namespace edm;
using namespace std;
using namespace reco;

EwkElecDQM::EwkElecDQM( const ParameterSet & cfg ) :
      // Input collections
      trigTag_(cfg.getUntrackedParameter<edm::InputTag> ("TrigTag", edm::InputTag("TriggerResults::HLT"))),
      //      muonTag_(cfg.getUntrackedParameter<edm::InputTag> ("MuonTag", edm::InputTag("muons"))),
      elecTag_(cfg.getUntrackedParameter<edm::InputTag> ("ElecTag", edm::InputTag("gsfElectrons"))), 
      metTag_(cfg.getUntrackedParameter<edm::InputTag> ("METTag", edm::InputTag("met"))),
      //      metIncludesMuons_(cfg.getUntrackedParameter<bool> ("METIncludesMuons", false)),
      jetTag_(cfg.getUntrackedParameter<edm::InputTag> ("JetTag", edm::InputTag("sisCone5CaloJets"))),
      vertexTag_    (cfg.getUntrackedParameter<edm::InputTag> ("VertexTag", edm::InputTag("offlinePrimaryVertices"))),

      // Main cuts 
      //      muonTrig_(cfg.getUntrackedParameter<std::string> ("MuonTrig", "HLT_Mu9")),
      //elecTrig_(cfg.getUntrackedParameter<std::vector< std::string > >("ElecTrig", "HLT_Ele10_SW_L1R")), 
      elecTrig_(cfg.getUntrackedParameter<std::vector< std::string > >("ElecTrig")), 
      //      ptCut_(cfg.getUntrackedParameter<double>("PtCut", 25.)),
      ptCut_(cfg.getUntrackedParameter<double>("PtCut", 10.)),
      //      etaCut_(cfg.getUntrackedParameter<double>("EtaCut", 2.1)),
      etaCut_(cfg.getUntrackedParameter<double>("EtaCut", 2.4)),
      sieieCutBarrel_(cfg.getUntrackedParameter<double>("SieieBarrel", 0.01)),
      sieieCutEndcap_(cfg.getUntrackedParameter<double>("SieieEndcap", 0.028)),
      detainCutBarrel_(cfg.getUntrackedParameter<double>("DetainBarrel", 0.0071)),
      detainCutEndcap_(cfg.getUntrackedParameter<double>("DetainEndcap", 0.0066)),
      //      isRelativeIso_(cfg.getUntrackedParameter<bool>("IsRelativeIso", true)),
      //      isCombinedIso_(cfg.getUntrackedParameter<bool>("IsCombinedIso", false)),
      //      isoCut03_(cfg.getUntrackedParameter<double>("IsoCut03", 0.1)),
      ecalIsoCutBarrel_(cfg.getUntrackedParameter<double>("EcalIsoCutBarrel", 5.7)),
      ecalIsoCutEndcap_(cfg.getUntrackedParameter<double>("EcalIsoCutEndcap", 5.0)),
      hcalIsoCutBarrel_(cfg.getUntrackedParameter<double>("HcalIsoCutBarrel", 8.1)),
      hcalIsoCutEndcap_(cfg.getUntrackedParameter<double>("HcalIsoCutEndcap", 3.4)),
      trkIsoCutBarrel_(cfg.getUntrackedParameter<double>("TrkIsoCutBarrel", 7.2)),
      trkIsoCutEndcap_(cfg.getUntrackedParameter<double>("TrkIsoCutEndcap", 5.1)),
      mtMin_(cfg.getUntrackedParameter<double>("MtMin", -999999)),
      mtMax_(cfg.getUntrackedParameter<double>("MtMax", 999999.)),
      metMin_(cfg.getUntrackedParameter<double>("MetMin", -999999.)),
      metMax_(cfg.getUntrackedParameter<double>("MetMax", 999999.)),
      //      acopCut_(cfg.getUntrackedParameter<double>("AcopCut", 2.)),

      // Muon quality cuts
      //      dxyCut_(cfg.getUntrackedParameter<double>("DxyCut", 0.2)),
      //      normalizedChi2Cut_(cfg.getUntrackedParameter<double>("NormalizedChi2Cut", 10.)),
      //      trackerHitsCut_(cfg.getUntrackedParameter<int>("TrackerHitsCut", 11)),
      //      isAlsoTrackerMuon_(cfg.getUntrackedParameter<bool>("IsAlsoTrackerMuon", true)),

      // Z rejection
      //      ptThrForZ1_(cfg.getUntrackedParameter<double>("PtThrForZ1", 20.)),
      //      ptThrForZ2_(cfg.getUntrackedParameter<double>("PtThrForZ2", 10.)),

      // Top rejection
      eJetMin_(cfg.getUntrackedParameter<double>("EJetMin", 999999.)),
      nJetMax_(cfg.getUntrackedParameter<int>("NJetMax", 999999)),
      PUMax_(cfg.getUntrackedParameter<unsigned int>("PUMax", 60)),
      PUBinCount_(cfg.getUntrackedParameter<unsigned int>("PUBinCount", 12))
      
//       caloJetCollection_(cfg.getUntrackedParameter<edm:InputTag>("CaloJetCollection","sisCone5CaloJets"))



{
  isValidHltConfig_ = false;

  // access to dbe
  theDbe = Service<DQMStore>().operator->();
  theDbe->setCurrentFolder("Physics/EwkElecDQM");
  init_histograms();

}

void EwkElecDQM::beginRun(const Run& iRun, const EventSetup& iSet) {
      nall = 0;
      nsel = 0;

      nrec = 0; 
      neid = 0;
      niso = 0; 
//       nhlt = 0; 
//       nmet = 0;

     // passed as parameter to HLTConfigProvider::init(), not yet used
     bool isConfigChanged = false;
     // isValidHltConfig_ could be used to short-circuit analyze() in case of problems
     isValidHltConfig_ = hltConfigProvider_.init( iRun, iSet, "HLT", isConfigChanged );

     LogTrace("") << "isValidHltConfig_=" << isValidHltConfig_ << "\n";
}


void EwkElecDQM::beginJob() {

}

void EwkElecDQM::init_histograms() {

    char chtitle[256] = "";
    //             pt_before_ = theDbe->book1D("PT_BEFORECUTS","Muon transverse momentum (global muon) [GeV],100,0.,100.);
    //             pt_after_ = theDbe->book1D("PT_LASTCUT","Muon transverse momentum (global muon) [GeV],100,0.,100.);
    
    pt_before_ = theDbe->book1D("PT_BEFORECUTS","Electron transverse momentum [GeV]",100,0.,100.);
    pt_after_ = theDbe->book1D("PT_LASTCUT","Electron transverse momentum [GeV]",100,0.,100.);

    eta_before_ = theDbe->book1D("ETA_BEFORECUTS","Electron pseudo-rapidity",50,-2.5,2.5);
    eta_after_ = theDbe->book1D("ETA_LASTCUT","Electron pseudo-rapidity",50,-2.5,2.5);

    sieiebarrel_before_ = theDbe->book1D("SIEIEBARREL_BEFORECUTS","Electron #sigma_{i#etai#eta} (barrel)",70,0.,0.07);
    sieiebarrel_after_ = theDbe->book1D("SIEIEBARREL_LASTCUT","Electron #sigma_{i#etai#eta} (barrel)",70,0.,0.07);

    sieieendcap_before_ = theDbe->book1D("SIEIEENDCAP_BEFORECUTS","Electron #sigma_{i#etai#eta} (endcap)",70,0.,0.07);
    sieieendcap_after_ = theDbe->book1D("SIEIEENDCAP_LASTCUT","Electron #sigma_{i#etai#eta} (endcap)",70,0.,0.07);
    
    detainbarrel_before_ = theDbe->book1D("DETAINBARREL_BEFORECUTS","Electron #Delta#eta_{in} (barrel)",40,-0.02,0.02);
    detainbarrel_after_ = theDbe->book1D("DETAINBARREL_LASTCUT","Electron #Delta#eta_{in} (barrel)",40,-0.02,0.02);

    detainendcap_before_ = theDbe->book1D("DETAINENDCAP_BEFORECUTS","Electron #Delta#eta_{in} (endcap)",40,-0.02,0.02);
    detainendcap_after_ = theDbe->book1D("DETAINENDCAP_LASTCUT","Electron #Delta#eta_{in} (endcap)",40,-0.02,0.02);
    
    //             dxy_before_ = theDbe->book1D("DXY_BEFORECUTS","Muon transverse distance to beam spot [cm]",100,-0.5,0.5);
    //             dxy_after_ = theDbe->book1D("DXY_LASTCUT","Muon transverse distance to beam spot [cm]",100,-0.5,0.5);

    //             chi2_before_ = theDbe->book1D("CHI2_BEFORECUTS","Normalized Chi2, inner track fit",100,0.,100.);
    //             chi2_after_ = theDbe->book1D("CHI2_LASTCUT","Normalized Chi2, inner track fit",100,0.,100.);

    //             nhits_before_ = theDbe->book1D("NHITS_BEFORECUTS","Number of hits, inner track",40,-0.5,39.5);
    //             nhits_after_ = theDbe->book1D("NHITS_LASTCUT","Number of hits, inner track",40,-0.5,39.5);

    //             tkmu_before_ = theDbe->book1D("TKMU_BEFORECUTS","Tracker-muon flag (for global muons)",2,-0.5,1.5);
    //             tkmu_after_ = theDbe->book1D("TKMU_LASTCUT","Tracker-muon flag (for global muons)",2,-0.5,1.5);

    //             if (isRelativeIso_) {
    //               if (isCombinedIso_) {
    //                 snprintf(chtitle, 255, "Relative (combined) isolation variable");
    //                 iso_before_ = theDbe->book1D("ISO_BEFORECUTS","Relative (combined) isolation variable",100, 0., 1.);
    //                 iso_after_ = theDbe->book1D("ISO_LASTCUT","Relative (combined) isolation variable",100, 0., 1.);
    //               } else {
    //                 snprintf(chtitle, 255, "Relative (tracker) isolation variable");
    //                 iso_before_ = theDbe->book1D("ISO_BEFORECUTS","Relative (tracker) isolation variable",100, 0., 1.);
    //                 iso_after_ = theDbe->book1D("ISO_LASTCUT","Relative (tracker) isolation variable",100, 0., 1.);
    //               }
    //             } else {
    //               if (isCombinedIso_) {
    //                 iso_before_ = theDbe->book1D("ISO_BEFORECUTS","Absolute (combined) isolation variable [GeV]",100, 0., 20.);
    //                 iso_after_ = theDbe->book1D("ISO_LASTCUT","Absolute (combined) isolation variable [GeV]",100, 0., 20.);
    //               } else {
    //                 iso_before_ = theDbe->book1D("ISO_BEFORECUTS","Absolute (tracker) isolation variable [GeV]",100, 0., 20.);
    //                 iso_after_ = theDbe->book1D("ISO_LASTCUT","Absolute (tracker) isolation variable [GeV]",100, 0., 20.);
    //               }
    //             }

            ecalisobarrel_before_ = theDbe->book1D("ECALISOBARREL_BEFORECUTS","Absolute electron ECAL isolation variable (barrel) [GeV]",50,0.,50.);
            ecalisobarrel_after_ = theDbe->book1D("ECALISOBARREL_LASTCUT","Absolute electron ECAL isolation variable (barrel) [GeV]",50,0.,50.);

            ecalisoendcap_before_ = theDbe->book1D("ECALISOENDCAP_BEFORECUTS","Absolute electron ECAL isolation variable (endcap) [GeV]",50,0.,50.);
            ecalisoendcap_after_ = theDbe->book1D("ECALISOENDCAP_LASTCUT","Absolute electron ECAL isolation variable (endcap) [GeV]",50,0.,50.);

            hcalisobarrel_before_ = theDbe->book1D("HCALISOBARREL_BEFORECUTS","Absolute electron HCAL isolation variable (barrel) [GeV]",50,0.,50.);
            hcalisobarrel_after_ = theDbe->book1D("HCALISOBARREL_LASTCUT","Absolute electron HCAL isolation variable (barrel) [GeV]",50,0.,50.);

            hcalisoendcap_before_ = theDbe->book1D("HCALISOENDCAP_BEFORECUTS","Absolute electron HCAL isolation variable (endcap) [GeV]",50,0.,50.);
            hcalisoendcap_after_ = theDbe->book1D("HCALISOENDCAP_LASTCUT","Absolute electron HCAL isolation variable (endcap) [GeV]",50,0.,50.);

            trkisobarrel_before_ = theDbe->book1D("TRKISOBARREL_BEFORECUTS","Absolute electron track isolation variable (barrel) [GeV]",50,0.,50.);
            trkisobarrel_after_ = theDbe->book1D("TRKISOBARREL_LASTCUT","Absolute electron track isolation variable (barrel) [GeV]",50,0.,50.);

            trkisoendcap_before_ = theDbe->book1D("TRKISOENDCAP_BEFORECUTS","Absolute electron track isolation variable (endcap) [GeV]",50,0.,50.);
            trkisoendcap_after_ = theDbe->book1D("TRKISOENDCAP_LASTCUT","Absolute electron track isolation variable (endcap) [GeV]",50,0.,50.);

//             snprintf(chtitle, 255, "Trigger response (bit %s)", muonTrig_.data());
//             trig_before_ = theDbe->book1D("TRIG_BEFORECUTS",chtitle,2,-0.5,1.5);
//             trig_after_ = theDbe->book1D("TRIG_LASTCUT",chtitle,2,-0.5,1.5);

            //snprintf(chtitle, 255, "Trigger response (bit %s)", elecTrig_.data());
            trig_before_ = theDbe->book1D("TRIG_BEFORECUTS","Trigger response",2,-0.5,1.5); // elecTrig_ is now a vector of strings!
            trig_after_ = theDbe->book1D("TRIG_LASTCUT","Trigger response",2,-0.5,1.5);

            invmass_before_ = theDbe->book1D("INVMASS_BEFORECUTS","Di-electron invariant mass [GeV]",100,0.,200.);
            invmass_after_ = theDbe->book1D("INVMASS_AFTERCUTS","Di-electron invariant mass [GeV]",100,0.,200.);

            invmassPU_before_ = theDbe->book2D("INVMASS_PU_BEFORECUTS","Di-electron invariant mass [GeV] vs PU; mass [GeV]; PU count",100,0.,200., PUBinCount_, -0.5, PUMax_+0.5);
            invmassPU_afterZ_ = theDbe->book2D("INVMASS_PU_AFTERZCUTS","Di-electron invariant mass [GeV] vs PU; mass [GeV]; PU count",100,0.,200., PUBinCount_, -0.5, PUMax_+0.5);

            npvs_before_ = theDbe->book1D("NPVs_BEFORECUTS","Number of Valid Primary Vertices; nGoodPVs",PUMax_+1,-0.5,PUMax_+0.5);
            //npvs_afterW_ = theDbe->book1D("NPVs_AFTERWCUTS","Number of Valid Primary Vertices",PUMax_+1,-0.5,PUMax_+0.5);
            npvs_afterZ_ = theDbe->book1D("NPVs_AFTERZCUTS","Number of Valid Primary Vertices; nGoodPVs",PUMax_+1,-0.5,PUMax_+0.5);


            nelectrons_before_ = theDbe->book1D("NELECTRONS_BEFORECUTS","Number of electrons in event",10,-0.5,9.5);
            nelectrons_after_ = theDbe->book1D("NELECTRONS_AFTERCUTS","Number of electrons in event",10,-0.5,9.5);

            snprintf(chtitle, 255, "Transverse mass (%s) [GeV]", metTag_.label().data());
            mt_before_ = theDbe->book1D("MT_BEFORECUTS",chtitle,150,0.,300.);
            mt_after_ = theDbe->book1D("MT_LASTCUT",chtitle,150,0.,300.);

//             snprintf(chtitle, 255, "Transverse mass (%s) [GeV]", metTag_.label().data());
//             mt_before_ = theDbe->book1D("MT_BEFORECUTS",chtitle,150,0.,300.);
//             mt_after_ = theDbe->book1D("MT_LASTCUT",chtitle,150,0.,300.);

            snprintf(chtitle, 255, "Missing transverse energy (%s) [GeV]", metTag_.label().data());
            met_before_ = theDbe->book1D("MET_BEFORECUTS",chtitle,100,0.,200.);
            met_after_ = theDbe->book1D("MET_LASTCUT",chtitle,100,0.,200.);

//             snprintf(chtitle, 255, "MU-MET (%s) acoplanarity", metTag_.label().data());
//             acop_before_ = theDbe->book1D("ACOP_BEFORECUTS",chtitle,50,0.,M_PI);
//             acop_after_ = theDbe->book1D("ACOP_LASTCUT",chtitle,50,0.,M_PI);

//             snprintf(chtitle, 255, "Z rejection: number of muons above %.2f GeV", ptThrForZ1_);
//             nz1_before_ = theDbe->book1D("NZ1_BEFORECUTS",chtitle,10,-0.5,9.5);
//             nz1_after_ = theDbe->book1D("NZ1_LASTCUT",chtitle,10,-0.5,9.5);

//             snprintf(chtitle, 255, "Z rejection: number of muons above %.2f GeV", ptThrForZ2_);
//             nz2_before_ = theDbe->book1D("NZ2_BEFORECUTS",chtitle,10,-0.5,9.5);
//             nz2_after_ = theDbe->book1D("NZ2_LASTCUT",chtitle,10,-0.5,9.5);

             snprintf(chtitle, 255, "Number of jets (%s) above %.2f GeV", jetTag_.label().data(), eJetMin_);
             njets_before_ = theDbe->book1D("NJETS_BEFORECUTS",chtitle,10,-0.5,9.5);
             njets_after_  = theDbe->book1D("NJETS_LASTCUT",chtitle,10,-0.5,9.5);

             snprintf(chtitle, 255, "Jet with highest E_{T} (%s)", jetTag_.label().data());
             jet_et_before_       = theDbe->book1D("JETET1_BEFORECUTS",chtitle, 20, 0., 200.0);
             jet_et_after_       = theDbe->book1D("JETET1_AFTERCUTS",chtitle, 20, 0., 200.0);

             snprintf(chtitle, 255, "Eta of Jet with highest E_{T} (%s)", jetTag_.label().data());
             jet_eta_before_       = theDbe->book1D("JETETA1_BEFORECUTS",chtitle, 20, -5, 5);
             jet_eta_after_       = theDbe->book1D("JETETA1_AFTERCUTS",chtitle, 20, -5, 5);

//           snprintf(chtitle, 255, "Jet with 2nd highest E_{T} (%s)", jetTag_.label().data());
//           jet2_et_before      = theDbe->book1D("JETET2_BEFORECUTS",chtitle, 20, 0., 200.0);
//           jet2_et_after       = theDbe->book1D("JETET2_AFTERCUTS",chtitle, 20, 0., 200.0);
             


}


void EwkElecDQM::endJob() {
}

void EwkElecDQM::endRun(const Run& r, const EventSetup&) {

  // overall
  double all = nall;
  double esel = nsel/all;
  LogVerbatim("") << "\n>>>>>> SELECTION SUMMARY BEGIN >>>>>>>>>>>>>>>";
  LogVerbatim("") << "Total number of events analyzed: " << nall << " [events]";
  LogVerbatim("") << "Total number of events selected: " << nsel << " [events]";
  LogVerbatim("") << "Overall efficiency:             " << "(" << setprecision(4) << esel*100. <<" +/- "<< setprecision(2) << sqrt(esel*(1-esel)/all)*100. << ")%";
  
  double erec = nrec/all;
  double eeid = neid/all;
  double eiso = niso/all;
//   double ehlt = nhlt/all;
//   double emet = nmet/all;
  
  // general reconstruction step??
  double num = nrec;
  double eff = erec;
  double err = sqrt(eff*(1-eff)/all);
  LogVerbatim("") << "Passing Pt/Eta/Quality cuts:    " << num << " [events], (" << setprecision(4) << eff*100. <<" +/- "<< setprecision(2) << err*100. << ")%";

  // electron ID step  
  num = neid;
  eff = eeid;
  err = sqrt(eff*(1-eff)/all);
  double effstep = 0.;
  double errstep = 0.;
  if (nrec>0) effstep = eeid/erec;
  if (nrec>0) errstep = sqrt(effstep*(1-effstep)/nrec);
  LogVerbatim("") << "Passing eID cuts:         " << num << " [events], (" << setprecision(4) << eff*100. <<" +/- "<< setprecision(2) << err*100. << ")%, to previous step: (" <<  setprecision(4) << effstep*100. << " +/- "<< setprecision(2) << errstep*100. <<")%";
  
  // isolation step  
  num = niso;
  eff = eiso;
  err = sqrt(eff*(1-eff)/all);
  effstep = 0.;
  errstep = 0.;
  if (neid>0) effstep = eiso/eeid;
  if (neid>0) errstep = sqrt(effstep*(1-effstep)/neid);
  LogVerbatim("") << "Passing isolation cuts:         " << num << " [events], (" << setprecision(4) << eff*100. <<" +/- "<< setprecision(2) << err*100. << ")%, to previous step: (" <<  setprecision(4) << effstep*100. << " +/- "<< setprecision(2) << errstep*100. <<")%";
  
//   // trigger step
//   num = nhlt;
//   eff = ehlt;
//   err = sqrt(eff*(1-eff)/all);
//   effstep = 0.;
//   errstep = 0.;
//   if (niso>0) effstep = ehlt/eiso;
//   if (niso>0) errstep = sqrt(effstep*(1-effstep)/niso);
//   LogVerbatim("") << "Passing HLT criteria:           " << num << " [events], (" << setprecision(4) << eff*100. <<" +/- "<< setprecision(2) << err*100. << ")%, to previous step: (" <<  setprecision(4) << effstep*100. << " +/- "<< setprecision(2) << errstep*100. <<")%";
  
  // trigger step
  num = nsel;
  eff = esel;
  err = sqrt(eff*(1-eff)/all);
  effstep = 0.;
  errstep = 0.;
  if (niso>0) effstep = esel/eiso;
  if (niso>0) errstep = sqrt(effstep*(1-effstep)/niso);
  LogVerbatim("") << "Passing HLT criteria:           " << num << " [events], (" << setprecision(4) << eff*100. <<" +/- "<< setprecision(2) << err*100. << ")%, to previous step: (" <<  setprecision(4) << effstep*100. << " +/- "<< setprecision(2) << errstep*100. <<")%";
  
//   // met/acoplanarity cuts 
//   num = nmet;
//   eff = emet;
//   err = sqrt(eff*(1-eff)/all);
//   effstep = 0.;
//   errstep = 0.;
//   if (nhlt>0) effstep = emet/ehlt;
//   if (nhlt>0) errstep = sqrt(effstep*(1-effstep)/nhlt);
//   LogVerbatim("") << "Passing MET/acoplanarity cuts:  " << num << " [events], (" << setprecision(4) << eff*100. <<" +/- "<< setprecision(2) << err*100. << ")%, to previous step: (" <<  setprecision(4) << effstep*100. << " +/- "<< setprecision(2) << errstep*100. <<")%";
  
//   // Z/top selection cuts ALSO LAST STEP so "sel" for "selection"
//   num = nsel;
//   eff = esel;
//   err = sqrt(eff*(1-eff)/all);
//   effstep = 0.;
//   errstep = 0.;
//   if (nmet>0) effstep = esel/emet;
//   if (nmet>0) errstep = sqrt(effstep*(1-effstep)/nmet);
//   LogVerbatim("") << "Passing Z/top rejection cuts:   " << num << " [events], (" << setprecision(4) << eff*100. <<" +/- "<< setprecision(2) << err*100. << ")%, to previous step: (" <<  setprecision(4) << effstep*100. << " +/- "<< setprecision(2) << errstep*100. <<")%";
  
  LogVerbatim("") << ">>>>>> SELECTION SUMMARY END   >>>>>>>>>>>>>>>\n";
}

void EwkElecDQM::analyze (const Event & ev, const EventSetup &) {
      
      // Reset global event selection flags
      bool rec_sel = false;
      bool eid_sel = false;
      bool iso_sel = false;
//       bool hlt_sel = false;
      bool all_sel = false;

//       // Muon collection
//       Handle<View<Muon> > muonCollection;
//       if (!ev.getByLabel(muonTag_, muonCollection)) {
//             LogWarning("") << ">>> Muon collection does not exist !!!";
//             return;
//       }
//       unsigned int muonCollectionSize = muonCollection->size();

      // Electron collection
      Handle<View<GsfElectron> > electronCollection;
      if (!ev.getByLabel(elecTag_, electronCollection)) {
        //LogWarning("") << ">>> Electron collection does not exist !!!";
        return;
      }
      unsigned int electronCollectionSize = electronCollection->size();

      // Beam spot
      Handle<reco::BeamSpot> beamSpotHandle;
      if (!ev.getByLabel(InputTag("offlineBeamSpot"), beamSpotHandle)) {
        //LogWarning("") << ">>> No beam spot found !!!";
        return;
      }
        // MET
      double met_px = 0.;
      double met_py = 0.;
      Handle<View<MET> > metCollection;
      if (!ev.getByLabel(metTag_, metCollection)) {
        //LogWarning("") << ">>> MET collection does not exist !!!";
        return;
      }
      const MET& met = metCollection->at(0);
      met_px = met.px();
      met_py = met.py();
//       if (!metIncludesMuons_) {
//             for (unsigned int i=0; i<muonCollectionSize; i++) {
//                   const Muon& mu = muonCollection->at(i);
//                   if (!mu.isGlobalMuon()) continue;
//                   met_px -= mu.px();
//                   met_py -= mu.py();
//             }
//       }
      double met_et = sqrt(met_px*met_px+met_py*met_py);
      LogTrace("") << ">>> MET, MET_px, MET_py: " << met_et << ", " << met_px << ", " << met_py << " [GeV]";
      met_before_->Fill(met_et);


      // Vertices in the event
      int npvCount = 0;
      Handle<View<reco::Vertex> > vertexCollection;
           if (!ev.getByLabel(vertexTag_, vertexCollection)) {
                 LogError("") << ">>> Vertex collection does not exist !!!";
                 return;
            }
      for (unsigned int i=0; i<vertexCollection->size(); i++) {
            const Vertex& vertex = vertexCollection->at(i);
            if (vertex.isValid()) npvCount++;
      }
      npvs_before_->Fill(npvCount);


      // Trigger
      Handle<TriggerResults> triggerResults;
      if (!ev.getByLabel(trigTag_, triggerResults)) {
        //LogWarning("") << ">>> TRIGGER collection does not exist !!!";
        return;
      }
      const edm::TriggerNames & trigNames = ev.triggerNames(*triggerResults);
      bool trigger_fired = false;
      /*
      for (unsigned int i=0; i<triggerResults->size(); i++) {
            if (triggerResults->accept(i)) {
                  LogTrace("") << "Accept by: " << i << ", Trigger: " << trigNames.triggerName(i);
            }
      }
      */

      // the following gives error on CRAFT08 data where itrig1=19 (vector index out of range)
      /*
      int itrig1 = trigNames.triggerIndex(muonTrig_);
      if (triggerResults->accept(itrig1)) trigger_fired = true;
      */
      //suggested replacement: lm250909
      for (unsigned int i=0; i<triggerResults->size(); i++) 
        {
          std::string trigName = trigNames.triggerName(i);        
          bool found=false; 
          
//        for (unsigned int j = 0; j < elecTrig_.size(); j++)
//          {
//            if ( trigName == elecTrig_.at(j) && triggerResults->accept(i)) 
//              {
//                trigger_fired = true;
//              }
//          }


         for(unsigned int index=0; index<elecTrig_.size() && found==false; index++) {
           size_t trigPath = trigName.find(elecTrig_.at(index)); // 0 if found, pos if not
                   if (trigPath==0) found=true;
              }
              if(!found) continue;
              
              bool prescaled=false;    
              for (unsigned int ps= 0; ps<  hltConfigProvider_.prescaleSize(); ps++){
                  const unsigned int prescaleValue = hltConfigProvider_.prescaleValue(ps, trigName) ;
                  if (prescaleValue != 1) prescaled =true;
              }
                       
              if(triggerResults->accept(i) && !prescaled) trigger_fired=true;

        }


      LogTrace("") << ">>> Trigger bit: " << trigger_fired << " for one of ( " ;
      for (unsigned int k = 0; k < elecTrig_.size(); k++)
        {
          LogTrace("") << elecTrig_.at(k) << " ";
        }
      LogTrace("") << ")";
      trig_before_->Fill(trigger_fired);

//       // Loop to reject/control Z->mumu is done separately
//       unsigned int nmuonsForZ1 = 0;
//       unsigned int nmuonsForZ2 = 0;
//       for (unsigned int i=0; i<muonCollectionSize; i++) {
//             const Muon& mu = muonCollection->at(i);
//             if (!mu.isGlobalMuon()) continue;
//             double pt = mu.pt();
//             if (pt>ptThrForZ1_) nmuonsForZ1++;
//             if (pt>ptThrForZ2_) nmuonsForZ2++;
//       }
//       LogTrace("") << "> Z rejection: muons above " << ptThrForZ1_ << " [GeV]: " << nmuonsForZ1;
//       LogTrace("") << "> Z rejection: muons above " << ptThrForZ2_ << " [GeV]: " << nmuonsForZ2;
//       nz1_before_->Fill(nmuonsForZ1);
//       nz2_before_->Fill(nmuonsForZ2);
      
      // Jet collection
      Handle<View<Jet> > jetCollection;
      if (!ev.getByLabel(jetTag_, jetCollection)) {
        //LogError("") << ">>> JET collection does not exist !!!";
        return;
      }      
      float electron_et   = -8.0;
      float electron_eta  = -8.0;
      float electron_phi  = -8.0;
      float electron2_et  = -9.0;
      float electron2_eta = -9.0;
      float electron2_phi = -9.0;
      //need to get some electron info so jets can be cleaned of them
      for (unsigned int i=0; i<electronCollectionSize; i++) 
        {
          const GsfElectron& elec = electronCollection->at(i);   

          if (i < 1)
            {
               electron_et   = elec.pt();
               electron_eta  = elec.eta();
               electron_phi  = elec.phi();
            }
          if (i == 2)
            {
               electron2_et  = elec.pt();
               electron2_eta = elec.eta();
               electron2_phi = elec.phi();
            }       
        }

      float jet_et    = -8.0;
      float jet_eta   = -8.0;
      int   jet_count = 0;
      float jet2_et   = -9.0;
      unsigned int jetCollectionSize = jetCollection->size();
      int njets = 0;
      for (unsigned int i=0; i<jetCollectionSize; i++) {
        const Jet& jet = jetCollection->at(i);
        
        float jet_current_et = jet.et();
//      cout << "jet_current_et " << jet_current_et << endl;
        // if it overlaps with electron, it is not a jet
        if ( electron_et>0.0 && fabs(jet.eta()-electron_eta ) < 0.2 
             && calcDeltaPhi(jet.phi(), electron_phi ) < 0.2)
          continue;
        if ( electron2_et>0.0&& fabs(jet.eta()-electron2_eta) < 0.2 
             && calcDeltaPhi(jet.phi(), electron2_phi) < 0.2) 
          continue;

        // if it has too low Et, throw away
//      if (jet_current_et < eJetMin_) continue; //Keep if only want to plot above jet cut

        if (jet.et()>eJetMin_) 
          {
            njets++;
            jet_count++;
          }
        if (jet_current_et > jet_et) 
          {
            jet2_et  = jet_et;  // 2nd highest jet get's et from current highest
            jet_et   = jet.et(); // current highest jet gets et from the new highest
            jet_eta  = jet.eta();
          } 
        else if (jet_current_et > jet2_et) 
          {
            jet2_et  = jet.et();
          }
      }

      //Fill After all electron cuts (or both before and after)
      if (jet_et>10) //don't want low energy "jets"
        {
          jet_et_before_   ->Fill(jet_et);
//        jet2_et_before_  ->Fill(jet2_et);
          jet_eta_before_  ->Fill(jet_eta);
        }


      LogTrace("") << ">>> Total number of jets: " << jetCollectionSize;
      LogTrace("") << ">>> Number of jets above " << eJetMin_ << " [GeV]: " << njets;
      njets_before_->Fill(njets);


      // Start counting
      nall++;

      // Histograms per event should be done only once, so keep track of them
      bool hlt_hist_done = false;
      //bool minv_hist_done = false;
       bool met_hist_done = false;
//       bool nz1_hist_done = false;
//       bool nz2_hist_done = false;
      bool njets_hist_done = false;

      // Central selection criteria
      //const int NFLAGS = 13; // number of individual selection criteria
      const int NFLAGS = 11; // number of individual selection criteria
      // 0: pt cut           | rec
      // 1: eta cut          | rec
      // 2: sieie            | eid
      // 3: detain           | eid
      // 4: ecal iso         | iso
      // 5: hcal iso         | iso
      // 6: trk iso          | iso
      // 7: trigger fired    | hlt/all
      bool electron_sel[NFLAGS];

      // for invariant mass calculation
      // keep track of highest-pt electrons for initial (RECO) electrons 
      // and "good" electrons (passing all cuts)
      // first array dimension is for first or second good electron
      // second array dimension is for relevant quantities of good electron
      //    [0]: 1 for electron found or 0 for not found (if 0, no other quantities filled)
      //    [1]: mSqr
      //    [2]: E
      //    [3]: px
      //    [4]: py
      //    [5]: pz
      // inv mass = sqrt(m_1^2 + m_2^2 + 2*(E_1*E_2 - (px1*px2 + py1*py2 + pz1+pz2) ) )
      double electron[2][6];
      double goodElectron[2][6];
      nGoodElectrons = 0;
      for (unsigned int i = 0; i < 2; i++)
        {
          for (unsigned int j = 0; j < 6; j++)
            {
              electron[i][j] = 0.;
              goodElectron[i][j] = 0.;
            }
        }

      for (unsigned int i=0; i<electronCollectionSize; i++) 
        {
          for (int j=0; j<NFLAGS; ++j) 
            {
              electron_sel[j] = false;
            }
          
          const GsfElectron& elec = electronCollection->at(i);
          //if (!mu.isGlobalMuon()) continue;
          //if (mu.globalTrack().isNull()) continue;
          //if (mu.innerTrack().isNull()) continue;
          
          LogTrace("") << "> elec: processing electron number " << i << "...";
          //reco::TrackRef gm = mu.globalTrack();
          //reco::TrackRef tk = mu.innerTrack();
          // should have stuff for electron track?
          
          if (i < 2)
            {
              electron[i][0] = 1.;
              electron[i][1] = elec.massSqr();
              electron[i][2] = elec.energy();
              electron[i][3] = elec.px();
              electron[i][4] = elec.py();
              electron[i][5] = elec.pz();
            }

          // Pt,eta cuts
          double pt = elec.pt();
          double px = elec.px();
          double py = elec.py();
          double eta = elec.eta();
          LogTrace("") << "\t... pt, eta: " << pt << " [GeV], " << eta;;
          if (pt>ptCut_) electron_sel[0] = true; 
          if (fabs(eta)<etaCut_) electron_sel[1] = true; 
          
          bool isBarrel = false;
          bool isEndcap = false;
          if (eta < 1.4442 && eta > -1.4442)
            {
              isBarrel = true;
            }
          else if ((eta > 1.56 && eta < 2.4) || (eta < -1.56 && eta > -2.4))
            {
              isEndcap = true;
            }
          
          //             // d0, chi2, nhits quality cuts
          //             double dxy = tk->dxy(beamSpotHandle->position());
          //             double normalizedChi2 = gm->normalizedChi2();
          //             double trackerHits = tk->numberOfValidHits();
          //             LogTrace("") << "\t... dxy, normalizedChi2, trackerHits, isTrackerMuon?: " << dxy << " [cm], " << normalizedChi2 << ", " << trackerHits << ", " << mu.isTrackerMuon();
          //             if (fabs(dxy)<dxyCut_) muon_sel[2] = true; 
          //             if (normalizedChi2<normalizedChi2Cut_) muon_sel[3] = true; 
          //             if (trackerHits>=trackerHitsCut_) muon_sel[4] = true; 
          //             if (mu.isTrackerMuon()) muon_sel[5] = true; 
          
          pt_before_->Fill(pt);
          eta_before_->Fill(eta);
          //             dxy_before_->Fill(dxy);
          //             chi2_before_->Fill(normalizedChi2);
          //             nhits_before_->Fill(trackerHits);
          //             tkmu_before_->Fill(mu.isTrackerMuon());
          
          
          // Electron ID cuts
          double sieie = (double) elec.sigmaIetaIeta();
          double detain = (double) elec.deltaEtaSuperClusterTrackAtVtx(); // think this is detain
          if (sieie < sieieCutBarrel_ && isBarrel) electron_sel[2] = true; 
          if (sieie < sieieCutEndcap_ && isEndcap) electron_sel[2] = true; 
          if (detain < detainCutBarrel_ && isBarrel) electron_sel[3] = true; 
          if (detain < detainCutEndcap_ && isEndcap) electron_sel[3] = true; 
          if (isBarrel)
            {
              LogTrace("") << "\t... sieie value " << sieie << " (barrel), pass? " << electron_sel[2]; 
              LogTrace("") << "\t... detain value " << detain << " (barrel), pass? " << electron_sel[3]; 
            }
          else if (isEndcap)
            {
              LogTrace("") << "\t... sieie value " << sieie << " (endcap), pass? " << electron_sel[2]; 
              LogTrace("") << "\t... detain value " << detain << " (endcap), pass? " << electron_sel[2]; 
            }
          
          if (isBarrel) 
            {
              sieiebarrel_before_->Fill(sieie);
              detainbarrel_before_->Fill(detain);
            }
          else if (isEndcap) 
            {
              sieieendcap_before_->Fill(sieie);
              detainendcap_before_->Fill(detain);
            }
          
          
          
          // Isolation cuts
          //double isovar = mu.isolationR03().sumPt;
          double ecalisovar = elec.dr03EcalRecHitSumEt();  // picked one set! 
          double hcalisovar = elec.dr03HcalTowerSumEt();   // try others if 
          double trkisovar = elec.dr04TkSumPt();           // doesn't work 
          //if (isCombinedIso_) {
          //isovar += mu.isolationR03().emEt;
          //isovar += mu.isolationR03().hadEt;
          //}
          //if (isRelativeIso_) isovar /= pt;
          if (ecalisovar<ecalIsoCutBarrel_ && isBarrel) electron_sel[4] = true; 
          if (ecalisovar<ecalIsoCutEndcap_ && isEndcap) electron_sel[4] = true; 
          if (hcalisovar<hcalIsoCutBarrel_ && isBarrel) electron_sel[5] = true; 
          if (hcalisovar<hcalIsoCutEndcap_ && isEndcap) electron_sel[5] = true; 
          if (trkisovar<trkIsoCutBarrel_ && isBarrel) electron_sel[6] = true;   
          if (trkisovar<trkIsoCutEndcap_ && isEndcap) electron_sel[6] = true;   
          if (isBarrel)
            {
              LogTrace("") << "\t... ecal isolation value " << ecalisovar << " (barrel), pass? " << electron_sel[4]; 
              LogTrace("") << "\t... hcal isolation value " << hcalisovar << " (barrel), pass? " << electron_sel[5];
              LogTrace("") << "\t... trk isolation value " << trkisovar << " (barrel), pass? " << electron_sel[6];
            }
          else if (isEndcap)
            {
              LogTrace("") << "\t... ecal isolation value " << ecalisovar << " (endcap), pass? " << electron_sel[4]; 
              LogTrace("") << "\t... hcal isolation value " << hcalisovar << " (endcap), pass? " << electron_sel[5];
              LogTrace("") << "\t... trk isolation value " << trkisovar << " (endcap), pass? " << electron_sel[6];
            }
          
          //iso_before_->Fill(isovar);
          if (isBarrel) 
            {
              ecalisobarrel_before_->Fill(ecalisovar);
              hcalisobarrel_before_->Fill(hcalisovar);
              trkisobarrel_before_->Fill(trkisovar);
            }
          else if (isEndcap) 
            {
              ecalisoendcap_before_->Fill(ecalisovar);
              hcalisoendcap_before_->Fill(hcalisovar);
              trkisoendcap_before_->Fill(trkisovar);
            }
          
          
          // HLT 
          if (trigger_fired) electron_sel[7] = true; 
          
          
          //             // MET/MT cuts
          double w_et = met_et+pt;
          double w_px = met_px+px;
          double w_py = met_py+py;
          
          double massT = w_et*w_et - w_px*w_px - w_py*w_py;
          massT = (massT>0) ? sqrt(massT) : 0;
          
          LogTrace("") << "\t... W mass, W_et, W_px, W_py: " << massT << ", " << w_et << ", " << w_px << ", " << w_py << " [GeV]";
          if (massT>mtMin_ && massT<mtMax_) electron_sel[8] = true; 
          mt_before_->Fill(massT);
          if (met_et>metMin_ && met_et<metMax_) electron_sel[9] = true; 
          
          //             // Acoplanarity cuts
          //             Geom::Phi<double> deltaphi(mu.phi()-atan2(met_py,met_px));
          //             double acop = deltaphi.value();
          //             if (acop<0) acop = - acop;
          //             acop = M_PI - acop;
          //             LogTrace("") << "\t... acoplanarity: " << acop;
          //             if (acop<acopCut_) muon_sel[10] = true; 
          //             acop_before_->Fill(acop);
          
          //             // Remaining flags (from global event information)
          //             if (nmuonsForZ1<1 || nmuonsForZ2<2) muon_sel[11] = true; 
          if (njets<=nJetMax_) electron_sel[10] = true; 
          
          // Collect necessary flags "per electron"
          int flags_passed = 0;
          bool rec_sel_this = true;
          bool eid_sel_this = true;
          bool iso_sel_this = true;
          bool all_sel_this = true;
          for (int j=0; j<NFLAGS; ++j) 
            {
              if (electron_sel[j]) flags_passed += 1;
              if (j<2  && !electron_sel[j]) rec_sel_this = false;
              if (j<4  && !electron_sel[j]) eid_sel_this = false;
              if (j<7  && !electron_sel[j]) iso_sel_this = false;
              if (!electron_sel[j]) all_sel_this = false;
            }
          
          if (all_sel_this)
            {
              if (nGoodElectrons < 2)
                {
                  goodElectron[nGoodElectrons][0] = 1.;
                  goodElectron[nGoodElectrons][1] = elec.massSqr();
                  goodElectron[nGoodElectrons][2] = elec.energy();
                  goodElectron[nGoodElectrons][3] = elec.px();
                  goodElectron[nGoodElectrons][4] = elec.py();
                  goodElectron[nGoodElectrons][5] = elec.pz();
                }
              nGoodElectrons++;
            }

          //             // "rec" => pt,eta and quality cuts are satisfied
          //             if (rec_sel_this) rec_sel = true;
          //             // "iso" => "rec" AND "muon is isolated"
          //             if (iso_sel_this) iso_sel = true;
          //             // "hlt" => "iso" AND "event is triggered"
          //             if (hlt_sel_this) hlt_sel = true;
          //             // "all" => "met" AND "Z/top rejection cuts"
          //             if (all_sel_this) all_sel = true;
          
          // "rec" => pt,eta cuts are satisfied
          if (rec_sel_this) rec_sel = true;
          // "eid" => "rec" AND "electron passes ID"
          if (eid_sel_this) iso_sel = true;
          // "iso" => "eid" AND "electron is isolated"
          if (iso_sel_this) iso_sel = true;
          // "met" => "iso" AND "MET/MT"
          // "all" => "met" AND "event is triggered"
          if (all_sel_this) all_sel = true;

          // Do N-1 histograms now (and only once for global event quantities)
          if (flags_passed >= (NFLAGS-1)) 
            {
              if (!electron_sel[0] || flags_passed==NFLAGS) 
                {
                  pt_after_->Fill(pt);
                }
              if (!electron_sel[1] || flags_passed==NFLAGS) 
                {
                  eta_after_->Fill(eta);
                }
              if (!electron_sel[2] || flags_passed==NFLAGS) 
                {
                  if (isBarrel)
                    {
                      sieiebarrel_after_->Fill(sieie);
                    }
                  else if (isEndcap)
                    {
                      sieieendcap_after_->Fill(sieie);
                    }
                }
              if (!electron_sel[3] || flags_passed==NFLAGS) 
                {
                  if (isBarrel)
                    {
                      detainbarrel_after_->Fill(detain);
                    }
                  else if (isEndcap)
                    {
                      detainendcap_after_->Fill(detain);
                    }
                }
              if (!electron_sel[4] || flags_passed==NFLAGS) 
                {
                  if (isBarrel)
                    {
                      ecalisobarrel_after_->Fill(ecalisovar);
                    }
                  else if (isEndcap)
                    {
                      ecalisoendcap_after_->Fill(ecalisovar);
                    }
                }
              if (!electron_sel[5] || flags_passed==NFLAGS) 
                {
                  if (isBarrel)
                    {
                      hcalisobarrel_after_->Fill(hcalisovar);
                    }
                  else if (isEndcap)
                    {
                      hcalisoendcap_after_->Fill(hcalisovar);
                    }
                }
              if (!electron_sel[6] || flags_passed==NFLAGS) 
                {
                  if (isBarrel)
                    {
                      trkisobarrel_after_->Fill(trkisovar);
                    }
                  else if (isEndcap)
                    {
                      trkisoendcap_after_->Fill(trkisovar);
                    }
                }
              //                if (!electron_sel[3] || flags_passed==NFLAGS) 
              //                  {
              //                    detain_after_->Fill(detain);
              //                  }
              //                if (!electron_sel[4] || flags_passed==NFLAGS) 
              //                  {
              //                    ecaliso_after_->Fill(trackerHits);
              //                  }
              //                if (!electron_sel[5] || flags_passed==NFLAGS) 
              //                  {
              //                    tkelectr_after_->Fill(electr.isTrackerElectron());
              //                  }
              //                if (!electron_sel[6] || flags_passed==NFLAGS) 
              //                  {
              //                    iso_after_->Fill(isovar);
              //                  }
              if (!electron_sel[7] || flags_passed==NFLAGS) 
                {
                  if (!hlt_hist_done) 
                    {
                      trig_after_->Fill(trigger_fired);
                    }
                }
              hlt_hist_done = true;
              if (!electron_sel[8] || flags_passed==NFLAGS) 
                {
                  mt_after_->Fill(massT);
                }
              if (!electron_sel[9] || flags_passed==NFLAGS) 
                {
                  if (!met_hist_done) {
                    met_after_->Fill(met_et);
                  }
                }
              met_hist_done = true;
              //                   if (!muon_sel[10] || flags_passed==NFLAGS) 
              //                         acop_after_->Fill(acop);
              //                   if (!muon_sel[11] || flags_passed==NFLAGS) 
              //                         if (!nz1_hist_done) nz1_after_->Fill(nmuonsForZ1);
              //                         nz1_hist_done = true;
              //                   if (!muon_sel[11] || flags_passed==NFLAGS) 
              //                         if (!nz2_hist_done) nz2_after_->Fill(nmuonsForZ2);
              //                         nz2_hist_done = true;
              if (!electron_sel[10] || flags_passed==NFLAGS) {
                if (!njets_hist_done) 
                  {
                    njets_after_->Fill(njets);
                    if (jet_et>10) //don't want low energy "jets"
                      {
                        jet_et_after_   ->Fill(jet_et);
                        jet_eta_after_  ->Fill(jet_eta);
                      }
                  }
              }
              njets_hist_done = true;

            } // end N-1 histos block
          
        } // end loop through electrons

      // inv mass = sqrt(m_1^2 + m_2^2 + 2*(E_1*E_2 - (px1*px2 + py1*py2 + pz1+pz2) ) )
      double invMass=0;

      nelectrons_before_->Fill(electronCollectionSize);
      if (electronCollectionSize > 1)
        {
          invMass = sqrt(electron[0][1] + electron[1][1] + 2*(electron[0][2]*electron[1][2] - (electron[0][3]*electron[1][3] + electron[0][4]*electron[1][4] + electron[0][5]*electron[1][5]) ) );
          invmass_before_->Fill(invMass);
          invmassPU_before_->Fill(invMass,npvCount);
        }

      nelectrons_after_->Fill(nGoodElectrons);
      if (nGoodElectrons > 1)
        {
          invMass = sqrt(goodElectron[0][1] + goodElectron[1][1] + 2*(goodElectron[0][2]*goodElectron[1][2] - (goodElectron[0][3]*goodElectron[1][3] + goodElectron[0][4]*goodElectron[1][4] + goodElectron[0][5]*goodElectron[1][5]) ) );
          invmass_after_->Fill(invMass);
          invmassPU_afterZ_->Fill(invMass,npvCount);
          npvs_afterZ_->Fill(npvCount);
        }

      // Collect final flags
      if (rec_sel) nrec++;
      if (eid_sel) neid++;
      if (iso_sel) niso++;
      //      if (hlt_sel) nhlt++;
      //      if (met_sel) nmet++;

      if (all_sel) {
            nsel++;
            LogTrace("") << ">>>> Event ACCEPTED";
      } else {
            LogTrace("") << ">>>> Event REJECTED";
      }



      return;

}

// This always returns only a positive deltaPhi
double EwkElecDQM::calcDeltaPhi(double phi1, double phi2) {

  double deltaPhi = phi1 - phi2;

  if (deltaPhi < 0) deltaPhi = -deltaPhi;

  if (deltaPhi > 3.1415926) {
    deltaPhi = 2 * 3.1415926 - deltaPhi;
  }

  return deltaPhi;
}