SiStripGainsPCLWorker.cc

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#include "CalibTracker/SiStripChannelGain/interface/SiStripGainsPCLWorker.h"
#include "Geometry/Records/interface/TrackerTopologyRcd.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"

#include <iostream>
#include <sstream>

//********************************************************************************//
SiStripGainsPCLWorker::SiStripGainsPCLWorker(const edm::ParameterSet& iConfig) 
{  
  MinTrackMomentum        = iConfig.getUntrackedParameter<double>  ("minTrackMomentum"        ,  3.0);
  MaxTrackMomentum        = iConfig.getUntrackedParameter<double>  ("maxTrackMomentum"        ,  99999.0);
  MinTrackEta             = iConfig.getUntrackedParameter<double>  ("minTrackEta"             , -5.0);
  MaxTrackEta             = iConfig.getUntrackedParameter<double>  ("maxTrackEta"             ,  5.0);
  MaxNrStrips             = iConfig.getUntrackedParameter<unsigned>("maxNrStrips"             ,  2);
  MinTrackHits            = iConfig.getUntrackedParameter<unsigned>("MinTrackHits"            ,  8);
  MaxTrackChiOverNdf      = iConfig.getUntrackedParameter<double>  ("MaxTrackChiOverNdf"      ,  3);
  MaxTrackingIteration    = iConfig.getUntrackedParameter<int>     ("MaxTrackingIteration"    ,  7);
  AllowSaturation         = iConfig.getUntrackedParameter<bool>    ("AllowSaturation"         ,  false);
  FirstSetOfConstants     = iConfig.getUntrackedParameter<bool>    ("FirstSetOfConstants"     ,  true);
  Validation              = iConfig.getUntrackedParameter<bool>    ("Validation"              ,  false);
  OldGainRemoving         = iConfig.getUntrackedParameter<bool>    ("OldGainRemoving"         ,  false);
  useCalibration          = iConfig.getUntrackedParameter<bool>    ("UseCalibration"          ,  false);
  doChargeMonitorPerPlane = iConfig.getUntrackedParameter<bool>    ("doChargeMonitorPerPlane" ,  false);
  m_DQMdir                = iConfig.getUntrackedParameter<std::string>  ("DQMdir"             , "AlCaReco/SiStripGains");
  m_calibrationMode       = iConfig.getUntrackedParameter<std::string>  ("calibrationMode"    , "StdBunch");
  VChargeHisto            = iConfig.getUntrackedParameter<std::vector<std::string> >  ("ChargeHisto");

  // fill in the mapping between the histogram indices and the (id,side,plane) tuple
  std::vector<std::pair<std::string,std::string>> hnames = APVGain::monHnames(VChargeHisto,doChargeMonitorPerPlane,"");
  for (unsigned int i=0;i<hnames.size();i++){

    int id    = APVGain::subdetectorId((hnames[i]).first);
    int side  = APVGain::subdetectorSide((hnames[i]).first);
    int plane = APVGain::subdetectorPlane((hnames[i]).first);
    std::string s = hnames[i].first;

    auto loc = APVloc(id,side,plane,s);
    theTopologyMap.insert(std::make_pair(i,loc));
  }

  //Set the monitoring element tag and store
  dqm_tag_.reserve(7);
  dqm_tag_.clear();
  dqm_tag_.push_back( "StdBunch" );      // statistic collection from Standard Collision Bunch @ 3.8 T
  dqm_tag_.push_back( "StdBunch0T" );    // statistic collection from Standard Collision Bunch @ 0 T
  dqm_tag_.push_back( "AagBunch" );      // statistic collection from First Collision After Abort Gap @ 3.8 T
  dqm_tag_.push_back( "AagBunch0T" );    // statistic collection from First Collision After Abort Gap @ 0 T
  dqm_tag_.push_back( "IsoMuon" );       // statistic collection from Isolated Muon @ 3.8 T
  dqm_tag_.push_back( "IsoMuon0T" );     // statistic collection from Isolated Muon @ 0 T
  dqm_tag_.push_back( "Harvest" );       // statistic collection: Harvest
  
  // configure token for gathering the ntuple variables 
  edm::ParameterSet swhallowgain_pset = iConfig.getUntrackedParameter<edm::ParameterSet>("gain");

  std::string label = swhallowgain_pset.getUntrackedParameter<std::string>("label");
  CalibPrefix_ = swhallowgain_pset.getUntrackedParameter<std::string>("prefix");
  CalibSuffix_ = swhallowgain_pset.getUntrackedParameter<std::string>("suffix");
  
  trackindex_token_     = consumes<std::vector<int>            >(edm::InputTag(label, CalibPrefix_ + "trackindex"    + CalibSuffix_)); 
  rawid_token_          = consumes<std::vector<unsigned int>   >(edm::InputTag(label, CalibPrefix_ + "rawid"         + CalibSuffix_)); 
  localdirx_token_      = consumes<std::vector<double>         >(edm::InputTag(label, CalibPrefix_ + "localdirx"     + CalibSuffix_)); 
  localdiry_token_      = consumes<std::vector<double>         >(edm::InputTag(label, CalibPrefix_ + "localdiry"     + CalibSuffix_)); 
  localdirz_token_      = consumes<std::vector<double>         >(edm::InputTag(label, CalibPrefix_ + "localdirz"     + CalibSuffix_)); 
  firststrip_token_     = consumes<std::vector<unsigned short> >(edm::InputTag(label, CalibPrefix_ + "firststrip"    + CalibSuffix_)); 
  nstrips_token_        = consumes<std::vector<unsigned short> >(edm::InputTag(label, CalibPrefix_ + "nstrips"       + CalibSuffix_)); 
  saturation_token_     = consumes<std::vector<bool>           >(edm::InputTag(label, CalibPrefix_ + "saturation"    + CalibSuffix_)); 
  overlapping_token_    = consumes<std::vector<bool>           >(edm::InputTag(label, CalibPrefix_ + "overlapping"   + CalibSuffix_)); 
  farfromedge_token_    = consumes<std::vector<bool>           >(edm::InputTag(label, CalibPrefix_ + "farfromedge"   + CalibSuffix_)); 
  charge_token_         = consumes<std::vector<unsigned int>   >(edm::InputTag(label, CalibPrefix_ + "charge"        + CalibSuffix_)); 
  path_token_           = consumes<std::vector<double>         >(edm::InputTag(label, CalibPrefix_ + "path"          + CalibSuffix_)); 
#ifdef ExtendedCALIBTree
  chargeoverpath_token_ = consumes<std::vector<double>         >(edm::InputTag(label, CalibPrefix_ + "chargeoverpath"+ CalibSuffix_)); 
#endif
  amplitude_token_      = consumes<std::vector<unsigned char>  >(edm::InputTag(label, CalibPrefix_ + "amplitude"     + CalibSuffix_)); 
  gainused_token_       = consumes<std::vector<double>         >(edm::InputTag(label, CalibPrefix_ + "gainused"      + CalibSuffix_)); 
  gainusedTick_token_   = consumes<std::vector<double>         >(edm::InputTag(label, CalibPrefix_ + "gainusedTick"  + CalibSuffix_));
  
  edm::ParameterSet evtinfo_pset = iConfig.getUntrackedParameter<edm::ParameterSet>("evtinfo");
  label        = evtinfo_pset.getUntrackedParameter<std::string>("label");
  EventPrefix_ = evtinfo_pset.getUntrackedParameter<std::string>("prefix");
  EventSuffix_ = evtinfo_pset.getUntrackedParameter<std::string>("suffix");
  TrigTech_token_ = consumes<std::vector<bool> >(edm::InputTag(label, EventPrefix_ + "TrigTech" + EventSuffix_));
  
  edm::ParameterSet track_pset = iConfig.getUntrackedParameter<edm::ParameterSet>("tracks");
  label        = track_pset.getUntrackedParameter<std::string>("label");
  TrackPrefix_ = track_pset.getUntrackedParameter<std::string>("prefix");
  TrackSuffix_ = track_pset.getUntrackedParameter<std::string>("suffix");
  
  trackchi2ndof_token_  = consumes<std::vector<double>       >(edm::InputTag(label, TrackPrefix_ + "chi2ndof"  + TrackSuffix_)); 
  trackp_token_         = consumes<std::vector<float>        >(edm::InputTag(label, TrackPrefix_ + "momentum"  + TrackSuffix_)); 
  trackpt_token_    = consumes<std::vector<float>        >(edm::InputTag(label, TrackPrefix_ + "pt"        + TrackSuffix_)); 
  tracketa_token_   = consumes<std::vector<double>       >(edm::InputTag(label, TrackPrefix_ + "eta"       + TrackSuffix_)); 
  trackphi_token_   = consumes<std::vector<double>       >(edm::InputTag(label, TrackPrefix_ + "phi"       + TrackSuffix_)); 
  trackhitsvalid_token_ = consumes<std::vector<unsigned int> >(edm::InputTag(label, TrackPrefix_ + "hitsvalid" + TrackSuffix_)); 
  trackalgo_token_      = consumes<std::vector<int>          >(edm::InputTag(label, TrackPrefix_ + "algo"      + TrackSuffix_));
  
}

//********************************************************************************//
void 
SiStripGainsPCLWorker::dqmBeginRun(edm::Run const& run, edm::EventSetup const& iSetup, APVGain::APVGainHistograms & histograms) const {
  
  using namespace edm;
  static constexpr float defaultGainTick = 690./640.;

  // fills the APV collections at each begin run 
  edm::ESHandle<TrackerGeometry> tkGeom_;
  iSetup.get<TrackerDigiGeometryRecord>().get( tkGeom_ );
  const TrackerGeometry *bareTkGeomPtr = &(*tkGeom_);
  checkBookAPVColls(bareTkGeomPtr,histograms); 

  edm::ESHandle<SiStripGain> gainHandle;
  iSetup.get<SiStripGainRcd>().get(gainHandle);
  if(!gainHandle.isValid()){edm::LogError("SiStripGainPCLWorker")<< "gainHandle is not valid\n"; exit(0);}

  edm::ESHandle<SiStripQuality> SiStripQuality_;
  iSetup.get<SiStripQualityRcd>().get(SiStripQuality_);

  for(unsigned int a=0;a<histograms.APVsCollOrdered.size();a++){

    std::shared_ptr<stAPVGain> APV = histograms.APVsCollOrdered[a];

    if(APV->SubDet==PixelSubdetector::PixelBarrel || APV->SubDet==PixelSubdetector::PixelEndcap) continue;
    
    APV->isMasked      = SiStripQuality_->IsApvBad(APV->DetId,APV->APVId);
          
    if(gainHandle->getNumberOfTags()!=2){edm::LogError("SiStripGainPCLWorker")<< "NUMBER OF GAIN TAG IS EXPECTED TO BE 2\n";fflush(stdout);exit(0);};          
    float newPreviousGain = gainHandle->getApvGain(APV->APVId,gainHandle->getRange(APV->DetId, 1),1);
    if(APV->PreviousGain!=1 and newPreviousGain!=APV->PreviousGain)edm::LogWarning("SiStripGainPCLWorker")<< "WARNING: ParticleGain in the global tag changed\n";
    APV->PreviousGain = newPreviousGain;
    
    float newPreviousGainTick = APV->isMasked ? defaultGainTick : gainHandle->getApvGain(APV->APVId,gainHandle->getRange(APV->DetId, 0),0);
    if(APV->PreviousGainTick!=1 and newPreviousGainTick!=APV->PreviousGainTick){
      edm::LogWarning("SiStripGainPCLWorker")<< "WARNING: TickMarkGain in the global tag changed\n"<< std::endl
                         <<" APV->SubDet: "<< APV->SubDet << " APV->APVId:" << APV->APVId << std::endl
                         <<" APV->PreviousGainTick: "<<APV->PreviousGainTick<<" newPreviousGainTick: "<<newPreviousGainTick<<std::endl;
    }
    APV->PreviousGainTick = newPreviousGainTick;      
  }

}

//********************************************************************************//
// ------------ method called for each event  ------------
void
SiStripGainsPCLWorker::dqmAnalyze(edm::Event const& iEvent, edm::EventSetup const& iSetup,  APVGain::APVGainHistograms const& histograms) const 
{
  using namespace edm;

  unsigned int eventnumber = iEvent.id().event();
  unsigned int runnumber   = iEvent.id().run();
  
  edm::LogInfo("SiStripGainsPCLWorker") << "Processing run " << runnumber 
                    << " and event " << eventnumber 
                    << std::endl;
   
  edm::ESHandle<TrackerTopology> TopoHandle;
  iSetup.get<TrackerTopologyRcd>().get( TopoHandle );
  const TrackerTopology* topo = TopoHandle.product();

  // *****************************
  // * Event data handles
  // *****************************

  //Event data                         
  
  // Track data                        
  Handle<const std::vector<double>> handle01;
  iEvent.getByToken(trackchi2ndof_token_,handle01);
  auto trackchi2ndof = handle01.product(); 

  Handle<const std::vector<float>> handle02;
  iEvent.getByToken(trackp_token_,handle02);
  auto trackp = handle02.product(); 

  Handle<const std::vector<double>> handle03;
  iEvent.getByToken(tracketa_token_,handle03);
  auto tracketa = handle03.product(); 
  
  Handle<const std::vector<unsigned int>> handle04;
  iEvent.getByToken(trackhitsvalid_token_,handle04);
  auto trackhitsvalid = handle04.product(); 

  Handle<const std::vector<int>> handle05;
  iEvent.getByToken(trackalgo_token_,handle05);
  auto trackalgo = handle05.product(); 

  // CalibTree data                        
  Handle<const std::vector<int>> handle06;
  iEvent.getByToken(trackindex_token_,handle06);
  auto trackindex = handle06.product(); 

  Handle<const std::vector<unsigned int>> handle07;
  iEvent.getByToken(rawid_token_,handle07);
  auto rawid = handle07.product(); 

  Handle<const std::vector<unsigned short>> handle08;
  iEvent.getByToken(firststrip_token_,handle08);
  auto firststrip = handle08.product(); 

  Handle<const std::vector<unsigned short>> handle09;
  iEvent.getByToken(nstrips_token_,handle09);
  auto nstrips = handle09.product(); 

  Handle<const std::vector<bool>> handle10;
  iEvent.getByToken(saturation_token_,handle10);
  auto saturation = handle10.product(); 

  Handle<const std::vector<bool>> handle11;
  iEvent.getByToken(overlapping_token_,handle11);
  auto overlapping = handle11.product(); 

  Handle<const std::vector<bool>> handle12;
  iEvent.getByToken(farfromedge_token_,handle12);
  auto farfromedge = handle12.product(); 

  Handle<const std::vector<unsigned int>> handle13;
  iEvent.getByToken(charge_token_,handle13);
  auto charge = handle13.product(); 

  Handle<const std::vector<double>> handle14;
  iEvent.getByToken(path_token_,handle14);
  auto path = handle14.product(); 

#ifdef ExtendedCALIBTree 
  Handle<const std::vector<double>> handle15;
  iEvent.getByToken(chargeoverpath_token_,handle15);
  auto chargeoverpath = handle15.product();
#endif

  Handle<const std::vector<unsigned char>> handle16;
  iEvent.getByToken(amplitude_token_,handle16);
  auto amplitude = handle16.product(); 

  Handle<const std::vector<double>> handle17;
  iEvent.getByToken(gainused_token_,handle17);
  auto gainused = handle17.product(); 

  Handle<const std::vector<double>> handle18;
  iEvent.getByToken(gainusedTick_token_,handle18);
  auto gainusedTick = handle18.product(); 

  for (const auto &elem : theTopologyMap){
    LogDebug("SiStripGainsPCLWorker") << elem.first << " - " << elem.second.m_string << " " << elem.second.m_subdetectorId << " " << elem.second.m_subdetectorSide << " " << elem.second.m_subdetectorPlane << std::endl;
  }

  LogDebug("SiStripGainsPCLWorker") <<"for mode"<< m_calibrationMode <<std::endl;

  int elepos = statCollectionFromMode(m_calibrationMode.c_str());
  
  unsigned int FirstAmplitude=0;
  for(unsigned int i=0;i<charge->size();i++){
    
    FirstAmplitude+=(*nstrips)[i];
    int    TI = (*trackindex)[i];
    
    if((*tracketa      )[TI]  < MinTrackEta          )continue;
    if((*tracketa      )[TI]  > MaxTrackEta          )continue;
    if((*trackp        )[TI]  < MinTrackMomentum     )continue;
    if((*trackp        )[TI]  > MaxTrackMomentum     )continue;
    if((*trackhitsvalid)[TI]  < MinTrackHits         )continue;
    if((*trackchi2ndof )[TI]  > MaxTrackChiOverNdf   )continue;
    if((*trackalgo     )[TI]  > MaxTrackingIteration )continue;

    std::shared_ptr<stAPVGain> APV = histograms.APVsColl.at(((*rawid)[i]<<4) | ((*firststrip)[i]/128));   //works for both strip and pixel thanks to firstStrip encoding for pixel in the calibTree
    
    if(APV->SubDet>2 && (*farfromedge)[i]        == false           )continue;
    if(APV->SubDet>2 && (*overlapping)[i]        == true            )continue;
    if(APV->SubDet>2 && (*saturation )[i]        && !AllowSaturation)continue;
    if(APV->SubDet>2 && (*nstrips    )[i]      > MaxNrStrips        )continue;
       
    int Charge = 0;
    if(APV->SubDet>2 && (useCalibration || !FirstSetOfConstants)){
      bool Saturation = false;
      for(unsigned int s=0;s<(*nstrips)[i];s++){
    int StripCharge =  (*amplitude)[FirstAmplitude-(*nstrips)[i]+s];
    if(useCalibration && !FirstSetOfConstants){ StripCharge=(int)(StripCharge*(APV->PreviousGain/APV->CalibGain));
    }else if(useCalibration){                   StripCharge=(int)(StripCharge/APV->CalibGain);
    }else if(!FirstSetOfConstants){             StripCharge=(int)(StripCharge*APV->PreviousGain);}
    if(StripCharge>1024){
      StripCharge = 255;
      Saturation = true;
    }else if(StripCharge>254){
      StripCharge = 254;
      Saturation = true;
    }
    Charge += StripCharge;
      }
      if(Saturation && !AllowSaturation)continue;
    }else if(APV->SubDet>2){
      Charge = (*charge)[i];
    }else{
      Charge = (*charge)[i]/265.0; //expected scale factor between pixel and strip charge               
    }
    
    double ClusterChargeOverPath   =  ( (double) Charge )/(*path)[i] ;
    if(APV->SubDet>2){
      if(Validation)     {ClusterChargeOverPath/=(*gainused)[i];}
      if(OldGainRemoving){ClusterChargeOverPath*=(*gainused)[i];}
    }

    // keep processing of pixel cluster charge until here
    if(APV->SubDet<=2) continue;

    // real histogram for calibration
    histograms.Charge_Vs_Index[elepos].fill(APV->Index,ClusterChargeOverPath);
    LogDebug("SiStripGainsPCLWorker") <<" for mode "<< m_calibrationMode << "\n"
                      <<" i "<< i
                      <<" useCalibration "<< useCalibration
                      <<" FirstSetOfConstants "<< FirstSetOfConstants
                      <<" APV->PreviousGain " << APV->PreviousGain
                      <<" APV->CalibGain " << APV->CalibGain
                      <<" APV->DetId "<< APV->DetId
                      <<" APV->Index "<< APV->Index 
                      <<" Charge "<< Charge
                      <<" Path "<< (*path)[i]
                      <<" ClusterChargeOverPath "<< ClusterChargeOverPath
                      <<std::endl;
    
    // Fill monitoring histograms
    int mCharge1 = 0;
    int mCharge2 = 0;
    int mCharge3 = 0;
    int mCharge4 = 0;
    if(APV->SubDet>2) {
      for(unsigned int s=0;s<(*nstrips)[i];s++){
        int StripCharge =  (*amplitude)[FirstAmplitude-(*nstrips)[i]+s];
        if(StripCharge>1024)      StripCharge = 255;
        else if(StripCharge>254)  StripCharge = 254;
        mCharge1 += StripCharge;
        mCharge2 += StripCharge;
        mCharge3 += StripCharge;
        mCharge4 += StripCharge;
      }
      // Revome gains for monitoring
      mCharge2 *= (*gainused)[i];                         // remove G2
      mCharge3 *= (*gainusedTick)[i];                     // remove G1
      mCharge4 *= ( (*gainused)[i] * (*gainusedTick)[i]); // remove G1 and G2
    } 

    LogDebug("SiStripGainsPCLWorker") <<" full charge "<< mCharge1 
                      <<" remove G2 "<< mCharge2
                      <<" remove G1 "<< mCharge3
                      <<" remove G1*G2 "<< mCharge4
                      <<std::endl;

    auto indices = APVGain::FetchIndices(theTopologyMap,(*rawid)[i], topo);

    for(auto m : indices) histograms.Charge_1[elepos][m].fill(( (double) mCharge1 )/(*path)[i]);
    for(auto m : indices) histograms.Charge_2[elepos][m].fill(( (double) mCharge2 )/(*path)[i]);
    for(auto m : indices) histograms.Charge_3[elepos][m].fill(( (double) mCharge3 )/(*path)[i]);
    for(auto m : indices) histograms.Charge_4[elepos][m].fill(( (double) mCharge4 )/(*path)[i]);

    if(APV->SubDet==StripSubdetector::TIB){
      histograms.Charge_Vs_PathlengthTIB[elepos].fill((*path)[i],Charge);  // TIB

    }else if(APV->SubDet==StripSubdetector::TOB){
      histograms.Charge_Vs_PathlengthTOB[elepos].fill((*path)[i],Charge);  // TOB

    }else if(APV->SubDet==StripSubdetector::TID){
      if(APV->Eta<0)     { histograms.Charge_Vs_PathlengthTIDM[elepos].fill((*path)[i],Charge); }  // TID minus
      else if(APV->Eta>0){ histograms.Charge_Vs_PathlengthTIDP[elepos].fill((*path)[i],Charge); }  // TID plus

    }else if(APV->SubDet==StripSubdetector::TEC){
      if(APV->Eta<0){
        if(APV->Thickness<0.04)     { histograms.Charge_Vs_PathlengthTECM1[elepos].fill((*path)[i],Charge); } // TEC minus, type 1
        else if(APV->Thickness>0.04){ histograms.Charge_Vs_PathlengthTECM2[elepos].fill((*path)[i],Charge); } // TEC minus, type 2
      } else if(APV->Eta>0){
        if(APV->Thickness<0.04)     { histograms.Charge_Vs_PathlengthTECP1[elepos].fill((*path)[i],Charge); } // TEC plus, type 1
        else if(APV->Thickness>0.04){ histograms.Charge_Vs_PathlengthTECP2[elepos].fill((*path)[i],Charge); } // TEC plus, type 2
      }
    }

  }// END OF ON-CLUSTER LOOP

  //LogDebug("SiStripGainsPCLWorker")<<" for mode"<< m_calibrationMode 
  //                   <<" entries in histogram:"<< histograms.Charge_Vs_Index[elepos].getEntries()
  //                   <<std::endl;

}

//********************************************************************************//
void 
SiStripGainsPCLWorker::beginJob()
{ 
}

//********************************************************************************//
// ------------ method called once each job just before starting event loop  ------------
void
SiStripGainsPCLWorker::checkBookAPVColls(const TrackerGeometry *bareTkGeomPtr,APVGain::APVGainHistograms & histograms) const
{
  if (bareTkGeomPtr) { // pointer not yet set: called the first time => fill the APVColls
    auto const & Det = bareTkGeomPtr->dets();
    
    edm::LogInfo("SiStripGainsPCLWorker") <<" Resetting APV struct"<<std::endl;

    unsigned int Index=0;

    for(unsigned int i=0;i<Det.size();i++){
      
      DetId  Detid  = Det[i]->geographicalId(); 
      int    SubDet = Detid.subdetId();
      
      if( SubDet == StripSubdetector::TIB ||  SubDet == StripSubdetector::TID ||
      SubDet == StripSubdetector::TOB ||  SubDet == StripSubdetector::TEC  ){
    
    auto DetUnit     = dynamic_cast<const StripGeomDetUnit*> (Det[i]);
    if(!DetUnit)continue;
    
    const StripTopology& Topo     = DetUnit->specificTopology();    
    unsigned int         NAPV     = Topo.nstrips()/128;
    
    for(unsigned int j=0;j<NAPV;j++){
      auto APV = std::make_shared<stAPVGain>();
      APV->Index         = Index;
      APV->Bin           = -1;
      APV->DetId         = Detid.rawId();
      APV->APVId         = j;
      APV->SubDet        = SubDet;
      APV->FitMPV        = -1;
      APV->FitMPVErr     = -1;
      APV->FitWidth      = -1;
      APV->FitWidthErr   = -1;
      APV->FitChi2       = -1;
      APV->FitNorm       = -1;
      APV->Gain          = -1;
      APV->PreviousGain  = 1;
      APV->PreviousGainTick  = 1;
      APV->x             = DetUnit->position().basicVector().x();
      APV->y             = DetUnit->position().basicVector().y();
      APV->z             = DetUnit->position().basicVector().z();
      APV->Eta           = DetUnit->position().basicVector().eta();
      APV->Phi           = DetUnit->position().basicVector().phi();
      APV->R             = DetUnit->position().basicVector().transverse();
      APV->Thickness     = DetUnit->surface().bounds().thickness();
      APV->NEntries      = 0;
      APV->isMasked      = false;
      
      histograms.APVsCollOrdered.push_back(APV);
      histograms.APVsColl[(APV->DetId<<4) | APV->APVId] = APV;
      Index++;
      histograms.NStripAPVs++;
    } // loop on APVs
      } // if is Strips
    } // loop on dets
    
    for(unsigned int i=0;i<Det.size();i++){  //Make two loop such that the Pixel information is added at the end --> make transition simpler
      DetId  Detid  = Det[i]->geographicalId();
      int    SubDet = Detid.subdetId();
      if( SubDet == PixelSubdetector::PixelBarrel || SubDet == PixelSubdetector::PixelEndcap ){
    auto DetUnit     = dynamic_cast<const PixelGeomDetUnit*> (Det[i]);
    if(!DetUnit) continue;
    
    const PixelTopology& Topo     = DetUnit->specificTopology();
    unsigned int         NROCRow  = Topo.nrows()/(80.);
    unsigned int         NROCCol  = Topo.ncolumns()/(52.);
    
    for(unsigned int j=0;j<NROCRow;j++){
      for(unsigned int i=0;i<NROCCol;i++){
        
        auto APV = std::make_shared<stAPVGain>();
        APV->Index         = Index;
        APV->Bin           = -1;
        APV->DetId         = Detid.rawId();
        APV->APVId         = (j<<3 | i);
        APV->SubDet        = SubDet;
        APV->FitMPV        = -1;
        APV->FitMPVErr     = -1;
        APV->FitWidth      = -1;
        APV->FitWidthErr   = -1;
        APV->FitChi2       = -1;
        APV->Gain          = -1;
        APV->PreviousGain  = 1;
        APV->PreviousGainTick = 1;
        APV->x             = DetUnit->position().basicVector().x();
        APV->y             = DetUnit->position().basicVector().y();
        APV->z             = DetUnit->position().basicVector().z();
        APV->Eta           = DetUnit->position().basicVector().eta();
        APV->Phi           = DetUnit->position().basicVector().phi();
        APV->R             = DetUnit->position().basicVector().transverse();
        APV->Thickness     = DetUnit->surface().bounds().thickness();
        APV->isMasked      = false; //SiPixelQuality_->IsModuleBad(Detid.rawId());
        APV->NEntries      = 0;
        
        histograms.APVsCollOrdered.push_back(APV);
        histograms.APVsColl[(APV->DetId<<4) | APV->APVId] = APV;
        Index++;
        histograms.NPixelDets++;

      } // loop on ROC cols
    } // loop on ROC rows
      } // if Pixel
    } // loop on Dets  
  }  //if (!bareTkGeomPtr_) ...
}

//********************************************************************************//
void 
SiStripGainsPCLWorker::endJob() 
{
}

//********************************************************************************//
void
SiStripGainsPCLWorker::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
    edm::ParameterSetDescription desc;
    desc.setUnknown();
    descriptions.addDefault(desc);
}

//********************************************************************************//
void 
SiStripGainsPCLWorker::bookHistograms(DQMStore::ConcurrentBooker & ibooker, edm::Run const& run, edm::EventSetup const& setup, APVGain::APVGainHistograms & histograms) const {

  ibooker.cd();
  std::string dqm_dir = m_DQMdir;
  const char* tag = dqm_tag_[statCollectionFromMode(m_calibrationMode.c_str())].c_str();

  edm::LogInfo("SiStripGainsPCLWorker") << "Setting " << dqm_dir << " in DQM and booking histograms for tag "
                    << tag << std::endl;
  
  ibooker.setCurrentFolder(dqm_dir);
 
  std::string stag(tag);
  if(!stag.empty() && stag[0]!='_') stag.insert(0,1,'_');
  
  std::string cvi      = std::string("Charge_Vs_Index") + stag;
  std::string cvpTIB   = std::string("Charge_Vs_PathlengthTIB")   + stag;
  std::string cvpTOB   = std::string("Charge_Vs_PathlengthTOB")   + stag;
  std::string cvpTIDP  = std::string("Charge_Vs_PathlengthTIDP")  + stag;
  std::string cvpTIDM  = std::string("Charge_Vs_PathlengthTIDM")  + stag;
  std::string cvpTECP1 = std::string("Charge_Vs_PathlengthTECP1") + stag;
  std::string cvpTECP2 = std::string("Charge_Vs_PathlengthTECP2") + stag;
  std::string cvpTECM1 = std::string("Charge_Vs_PathlengthTECM1") + stag;
  std::string cvpTECM2 = std::string("Charge_Vs_PathlengthTECM2") + stag;
  
  int elepos = statCollectionFromMode(tag);
  
  histograms.Charge_Vs_Index.reserve(dqm_tag_.size());
  histograms.Charge_Vs_PathlengthTIB.reserve(dqm_tag_.size());
  histograms.Charge_Vs_PathlengthTOB.reserve(dqm_tag_.size());
  histograms.Charge_Vs_PathlengthTIDP.reserve(dqm_tag_.size());
  histograms.Charge_Vs_PathlengthTIDM.reserve(dqm_tag_.size());
  histograms.Charge_Vs_PathlengthTECP1.reserve(dqm_tag_.size());
  histograms.Charge_Vs_PathlengthTECP2.reserve(dqm_tag_.size());
  histograms.Charge_Vs_PathlengthTECM1.reserve(dqm_tag_.size());
  histograms.Charge_Vs_PathlengthTECM2.reserve(dqm_tag_.size());

  // The cluster charge is stored by exploiting a non uniform binning in order 
  // reduce the histogram memory size. The bin width is relaxed with a falling
  // exponential function and the bin boundaries are stored in the binYarray. 
  // The binXarray is used to provide as many bins as the APVs.
  //
  // More details about this implementations are here:
  // https://indico.cern.ch/event/649344/contributions/2672267/attachments/1498323/2332518/OptimizeChHisto.pdf

  std::vector<float> binXarray;
  binXarray.reserve( histograms.NStripAPVs+1 );
  for(unsigned int a=0;a<=histograms.NStripAPVs;a++){
     binXarray.push_back( (float)a );
  }
  
  std::array<float,688> binYarray;
  double p0 = 5.445;
  double p1 = 0.002113;
  double p2 = 69.01576;
  double y = 0.;
  for(int b=0;b<687;b++) {
     binYarray[b] = y;
     if(y<=902.) y = y + 2.;
     else y = ( p0 - log(exp(p0-p1*y) - p2*p1)) / p1;
  }
  binYarray[687] = 4000.;

  histograms.Charge_1[elepos].clear();
  histograms.Charge_2[elepos].clear();
  histograms.Charge_3[elepos].clear();
  histograms.Charge_4[elepos].clear();


  auto it = histograms.Charge_Vs_Index.begin();
  histograms.Charge_Vs_Index.insert(it+elepos,ibooker.book2S(cvi.c_str()     , cvi.c_str()     , histograms.NStripAPVs, &binXarray[0], 687, binYarray.data()));

  it = histograms.Charge_Vs_PathlengthTIB.begin();
  histograms.Charge_Vs_PathlengthTIB.insert(it+elepos,ibooker.book2S(cvpTIB.c_str()  , cvpTIB.c_str()  , 20   , 0.3 , 1.3  , 250,0,2000));

  it = histograms.Charge_Vs_PathlengthTOB.begin();
  histograms.Charge_Vs_PathlengthTOB.insert(it+elepos,ibooker.book2S(cvpTOB.c_str()  , cvpTOB.c_str()  , 20   , 0.3 , 1.3  , 250,0,2000));  

  it = histograms.Charge_Vs_PathlengthTIDP.begin();
  histograms.Charge_Vs_PathlengthTIDP.insert(it+elepos,ibooker.book2S(cvpTIDP.c_str() , cvpTIDP.c_str() , 20   , 0.3 , 1.3  , 250,0,2000));

  it = histograms.Charge_Vs_PathlengthTIDM.begin();
  histograms.Charge_Vs_PathlengthTIDM.insert(it+elepos,ibooker.book2S(cvpTIDM.c_str() , cvpTIDM.c_str() , 20   , 0.3 , 1.3  , 250,0,2000));

  it = histograms.Charge_Vs_PathlengthTECP1.begin();
  histograms.Charge_Vs_PathlengthTECP1.insert(it+elepos,ibooker.book2S(cvpTECP1.c_str(), cvpTECP1.c_str(), 20   , 0.3 , 1.3  , 250,0,2000));

  it = histograms.Charge_Vs_PathlengthTECP2.begin();
  histograms.Charge_Vs_PathlengthTECP2.insert(it+elepos,ibooker.book2S(cvpTECP2.c_str(), cvpTECP2.c_str(), 20   , 0.3 , 1.3  , 250,0,2000));

  it = histograms.Charge_Vs_PathlengthTECM1.begin();
  histograms.Charge_Vs_PathlengthTECM1.insert(it+elepos,ibooker.book2S(cvpTECM1.c_str(), cvpTECM1.c_str(), 20   , 0.3 , 1.3  , 250,0,2000));

  it = histograms.Charge_Vs_PathlengthTECM2.begin();
  histograms.Charge_Vs_PathlengthTECM2.insert(it+elepos,ibooker.book2S(cvpTECM2.c_str(), cvpTECM2.c_str(), 20   , 0.3 , 1.3  , 250,0,2000));
 
  std::vector<std::pair<std::string,std::string>> hnames = APVGain::monHnames(VChargeHisto,doChargeMonitorPerPlane,"");
  for (unsigned int i=0;i<hnames.size();i++){
    std::string htag = (hnames[i]).first + stag;
    histograms.Charge_1[elepos].push_back(ibooker.book1DD( htag.c_str(), (hnames[i]).second.c_str(), 100   , 0. , 1000. ));
  }

  hnames = APVGain::monHnames(VChargeHisto,doChargeMonitorPerPlane,"woG2");
  for (unsigned int i=0;i<hnames.size();i++){
    std::string htag = (hnames[i]).first + stag;
    histograms.Charge_2[elepos].push_back(ibooker.book1DD( htag.c_str(), (hnames[i]).second.c_str(), 100   , 0. , 1000. ));
  }

  hnames = APVGain::monHnames(VChargeHisto,doChargeMonitorPerPlane,"woG1");
  for (unsigned int i=0;i<hnames.size();i++){
    std::string htag = (hnames[i]).first + stag;
    histograms.Charge_3[elepos].push_back(ibooker.book1DD( htag.c_str(), (hnames[i]).second.c_str(), 100   , 0. , 1000. ));
  }

  hnames = APVGain::monHnames(VChargeHisto,doChargeMonitorPerPlane,"woG1G2");
  for (unsigned int i=0;i<hnames.size();i++){
    std::string htag = (hnames[i]).first + stag;   
    histograms.Charge_4[elepos].push_back(ibooker.book1DD( htag.c_str(), (hnames[i]).second.c_str(), 100   , 0. , 1000. ));
  }
}