SiPixelTrackResidualSource.cc

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// Package:    SiPixelMonitorTrack
// Class:      SiPixelTrackResidualSource
// 
// class SiPixelTrackResidualSource SiPixelTrackResidualSource.cc 
//       DQM/SiPixelMonitorTrack/src/SiPixelTrackResidualSource.cc
//
// Description: SiPixel hit-to-track residual data quality monitoring modules
// Implementation: prototype -> improved -> never final - end of the 1st step 
//
// Original Author: Shan-Huei Chuang
//         Created: Fri Mar 23 18:41:42 CET 2007
//         Updated by Lukas Wehrli (plots for clusters on/off track added)


#include <iostream>
#include <map>
#include <string>
#include <vector>
#include <utility>

#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/Framework/interface/ESHandle.h"

#include "DataFormats/Common/interface/Handle.h"
#include "DataFormats/TrackCandidate/interface/TrackCandidateCollection.h"

#include "DataFormats/TrackerCommon/interface/TrackerTopology.h"
#include "Geometry/Records/interface/IdealGeometryRecord.h"
#include "DataFormats/SiPixelDetId/interface/PixelSubdetector.h"

#include "DataFormats/TrackingRecHit/interface/TrackingRecHitFwd.h"

#include "Geometry/TrackerGeometryBuilder/interface/PixelGeomDetUnit.h"
#include "Geometry/CommonTopologies/interface/PixelTopology.h"

#include "RecoTracker/TransientTrackingRecHit/interface/TkTransientTrackingRecHitBuilder.h"

#include "TrackingTools/TrackFitters/interface/TrajectoryFitter.h"
#include "TrackingTools/Records/interface/TransientRecHitRecord.h"
#include "TrackingTools/Records/interface/TrackingComponentsRecord.h"
#include "TrackingTools/TrackFitters/interface/TrajectoryStateCombiner.h"
#include "TrackingTools/TrajectoryState/interface/TrajectoryStateTransform.h"

#include "DQMServices/Core/interface/DQMStore.h"
#include "DQM/SiPixelCommon/interface/SiPixelFolderOrganizer.h"
#include "DQM/SiPixelMonitorTrack/interface/SiPixelTrackResidualSource.h"

//Claudia new libraries
#include "DataFormats/VertexReco/interface/Vertex.h"
#include "DataFormats/VertexReco/interface/VertexFwd.h"
#include "TrackingTools/Records/interface/TrackingComponentsRecord.h"
#include "TrackingTools/TransientTrack/interface/TransientTrackBuilder.h"
#include "TrackingTools/Records/interface/TransientTrackRecord.h"
#include "TrackingTools/TransientTrack/interface/TransientTrack.h"
#include "TrackingTools/TransientTrackingRecHit/interface/TransientTrackingRecHitBuilder.h"
#include "TrackingTools/TransientTrackingRecHit/interface/TransientTrackingRecHit.h"
#include "TrackingTools/Records/interface/TransientRecHitRecord.h"

using namespace std;
using namespace edm;


SiPixelTrackResidualSource::SiPixelTrackResidualSource(const edm::ParameterSet& pSet) :
  pSet_(pSet),
  modOn( pSet.getUntrackedParameter<bool>("modOn",true) ),
  reducedSet( pSet.getUntrackedParameter<bool>("reducedSet",true) ),
  ladOn( pSet.getUntrackedParameter<bool>("ladOn",false) ), 
  layOn( pSet.getUntrackedParameter<bool>("layOn",false) ), 
  phiOn( pSet.getUntrackedParameter<bool>("phiOn",false) ), 
  ringOn( pSet.getUntrackedParameter<bool>("ringOn",false) ), 
  bladeOn( pSet.getUntrackedParameter<bool>("bladeOn",false) ), 
  diskOn( pSet.getUntrackedParameter<bool>("diskOn",false) ),
  isUpgrade( pSet.getUntrackedParameter<bool>("isUpgrade",false) )
{ 
   pSet_ = pSet; 
   debug_ = pSet_.getUntrackedParameter<bool>("debug", false); 
   src_ = pSet_.getParameter<edm::InputTag>("src"); 
   clustersrc_ = pSet_.getParameter<edm::InputTag>("clustersrc");
   tracksrc_ = pSet_.getParameter<edm::InputTag>("trajectoryInput");
   ttrhbuilder_ = pSet_.getParameter<std::string>("TTRHBuilder");
   ptminres_= pSet.getUntrackedParameter<double>("PtMinRes",4.0) ;
   beamSpotToken_ = consumes<reco::BeamSpot>(std::string("offlineBeamSpot"));
   offlinePrimaryVerticesToken_ = consumes<reco::VertexCollection>(std::string("offlinePrimaryVertices"));
   generalTracksToken_ = consumes<reco::TrackCollection>(std::string("generalTracks"));
   tracksrcToken_ = consumes<std::vector<Trajectory> >(pSet_.getParameter<edm::InputTag>("trajectoryInput"));
   trackToken_ = consumes<std::vector<reco::Track> >(pSet_.getParameter<edm::InputTag>("trajectoryInput"));
   trackAssociationToken_ = consumes<TrajTrackAssociationCollection>(pSet_.getParameter<edm::InputTag>("trajectoryInput"));
   clustersrcToken_ = consumes<edmNew::DetSetVector<SiPixelCluster> >(pSet_.getParameter<edm::InputTag>("clustersrc"));

  LogInfo("PixelDQM") << "SiPixelTrackResidualSource constructor" << endl;
  LogInfo ("PixelDQM") << "Mod/Lad/Lay/Phi " << modOn << "/" << ladOn << "/" 
            << layOn << "/" << phiOn << std::endl;
  LogInfo ("PixelDQM") << "Blade/Disk/Ring" << bladeOn << "/" << diskOn << "/" 
            << ringOn << std::endl;

  firstRun = true;
  NTotal=0;
  NLowProb=0;
}


SiPixelTrackResidualSource::~SiPixelTrackResidualSource() {
  LogInfo("PixelDQM") << "SiPixelTrackResidualSource destructor" << endl;

  std::map<uint32_t,SiPixelTrackResidualModule*>::iterator struct_iter;
  for (struct_iter = theSiPixelStructure.begin() ; struct_iter != theSiPixelStructure.end() ; struct_iter++){
    delete struct_iter->second;
    struct_iter->second = 0;
  }
}


void SiPixelTrackResidualSource::dqmBeginRun(const edm::Run& r, edm::EventSetup const& iSetup) {
  LogInfo("PixelDQM") << "SiPixelTrackResidualSource beginRun()" << endl;
  // retrieve TrackerGeometry for pixel dets
  edm::ESHandle<TrackerGeometry> TG;
  iSetup.get<TrackerDigiGeometryRecord>().get(TG);
  if (debug_) LogVerbatim("PixelDQM") << "TrackerGeometry "<< &(*TG) <<" size is "<< TG->dets().size() << endl;
 
  // build theSiPixelStructure with the pixel barrel and endcap dets from TrackerGeometry
  for (TrackerGeometry::DetContainer::const_iterator pxb = TG->detsPXB().begin();  
       pxb!=TG->detsPXB().end(); pxb++) {
    if (dynamic_cast<PixelGeomDetUnit const *>((*pxb))!=0) {
      SiPixelTrackResidualModule* module = new SiPixelTrackResidualModule((*pxb)->geographicalId().rawId());
      theSiPixelStructure.insert(pair<uint32_t, SiPixelTrackResidualModule*>((*pxb)->geographicalId().rawId(), module));
    }
  }
  for (TrackerGeometry::DetContainer::const_iterator pxf = TG->detsPXF().begin(); 
       pxf!=TG->detsPXF().end(); pxf++) {
    if (dynamic_cast<PixelGeomDetUnit const *>((*pxf))!=0) {
      SiPixelTrackResidualModule* module = new SiPixelTrackResidualModule((*pxf)->geographicalId().rawId());
      theSiPixelStructure.insert(pair<uint32_t, SiPixelTrackResidualModule*>((*pxf)->geographicalId().rawId(), module));
    }
  }
  LogInfo("PixelDQM") << "SiPixelStructure size is " << theSiPixelStructure.size() << endl;
}

void SiPixelTrackResidualSource::bookHistograms(DQMStore::IBooker & iBooker, edm::Run const &, edm::EventSetup const & iSetup){

  // book residual histograms in theSiPixelFolder - one (x,y) pair of histograms per det
  SiPixelFolderOrganizer theSiPixelFolder;
  for (std::map<uint32_t, SiPixelTrackResidualModule*>::iterator pxd = theSiPixelStructure.begin(); 
       pxd!=theSiPixelStructure.end(); pxd++) {

    if(modOn){
      if (theSiPixelFolder.setModuleFolder((*pxd).first,0,isUpgrade)) (*pxd).second->book(pSet_,iBooker,reducedSet,0,isUpgrade);
      else throw cms::Exception("LogicError") << "SiPixelTrackResidualSource Folder Creation Failed! "; 
    }
    if(ladOn){
      if (theSiPixelFolder.setModuleFolder((*pxd).first,1,isUpgrade)) {
    
    (*pxd).second->book(pSet_,iBooker,reducedSet,1,isUpgrade);
      }
      else throw cms::Exception("LogicError") << "SiPixelTrackResidualSource ladder Folder Creation Failed! "; 
    }
    if(layOn){
      if (theSiPixelFolder.setModuleFolder((*pxd).first,2,isUpgrade)) (*pxd).second->book(pSet_,iBooker,reducedSet,2,isUpgrade);
      else throw cms::Exception("LogicError") << "SiPixelTrackResidualSource layer Folder Creation Failed! "; 
    }
    if(phiOn){
      if (theSiPixelFolder.setModuleFolder((*pxd).first,3,isUpgrade)) (*pxd).second->book(pSet_,iBooker,reducedSet,3,isUpgrade);
      else throw cms::Exception("LogicError") << "SiPixelTrackResidualSource phi Folder Creation Failed! "; 
    }
    if(bladeOn){
      if (theSiPixelFolder.setModuleFolder((*pxd).first,4,isUpgrade)) (*pxd).second->book(pSet_,iBooker,reducedSet,4,isUpgrade);
      else throw cms::Exception("LogicError") << "SiPixelTrackResidualSource Blade Folder Creation Failed! "; 
    }
    if(diskOn){
      if (theSiPixelFolder.setModuleFolder((*pxd).first,5,isUpgrade)) (*pxd).second->book(pSet_,iBooker,reducedSet,5,isUpgrade);
      else throw cms::Exception("LogicError") << "SiPixelTrackResidualSource Disk Folder Creation Failed! "; 
    }
    if(ringOn){
      if (theSiPixelFolder.setModuleFolder((*pxd).first,6,isUpgrade)) (*pxd).second->book(pSet_,iBooker,reducedSet,6,isUpgrade);
      else throw cms::Exception("LogicError") << "SiPixelTrackResidualSource Ring Folder Creation Failed! "; 
    }
  }


//   edm::InputTag tracksrc = pSet_.getParameter<edm::InputTag>("trajectoryInput");
//   edm::InputTag clustersrc = pSet_.getParameter<edm::InputTag>("clustersrc");

  //number of tracks
  iBooker.setCurrentFolder("Pixel/Tracks");
  meNofTracks_ = iBooker.book1D("ntracks_" + tracksrc_.label(),"Number of Tracks",4,0,4);
  meNofTracks_->setAxisTitle("Number of Tracks",1);
  meNofTracks_->setBinLabel(1,"All");
  meNofTracks_->setBinLabel(2,"Pixel");
  meNofTracks_->setBinLabel(3,"BPix");
  meNofTracks_->setBinLabel(4,"FPix");

  //number of tracks in pixel fiducial volume
  iBooker.setCurrentFolder("Pixel/Tracks");
  meNofTracksInPixVol_ = iBooker.book1D("ntracksInPixVol_" + tracksrc_.label(),"Number of Tracks crossing Pixel fiducial Volume",2,0,2);
  meNofTracksInPixVol_->setAxisTitle("Number of Tracks",1);
  meNofTracksInPixVol_->setBinLabel(1,"With Hits");
  meNofTracksInPixVol_->setBinLabel(2,"Without Hits");

  //number of clusters (associated to track / not associated)
  iBooker.setCurrentFolder("Pixel/Clusters/OnTrack");
  meNofClustersOnTrack_ = iBooker.book1D("nclusters_" + clustersrc_.label() + "_tot","Number of Clusters (on track)",3,0,3);
  meNofClustersOnTrack_->setAxisTitle("Number of Clusters on Track",1);
  meNofClustersOnTrack_->setBinLabel(1,"All");
  meNofClustersOnTrack_->setBinLabel(2,"BPix");
  meNofClustersOnTrack_->setBinLabel(3,"FPix");
  iBooker.setCurrentFolder("Pixel/Clusters/OffTrack");
  meNofClustersNotOnTrack_ = iBooker.book1D("nclusters_" + clustersrc_.label() + "_tot","Number of Clusters (off track)",3,0,3);
  meNofClustersNotOnTrack_->setAxisTitle("Number of Clusters off Track",1);
  meNofClustersNotOnTrack_->setBinLabel(1,"All");
  meNofClustersNotOnTrack_->setBinLabel(2,"BPix");
  meNofClustersNotOnTrack_->setBinLabel(3,"FPix");

  //cluster charge and size
  //charge
  //on track
  iBooker.setCurrentFolder("Pixel/Clusters/OnTrack");
  meClChargeOnTrack_all = iBooker.book1D("charge_" + clustersrc_.label(),"Charge (on track)",500,0.,500.);
  meClChargeOnTrack_all->setAxisTitle("Charge size (in ke)",1);
  meClChargeOnTrack_bpix = iBooker.book1D("charge_" + clustersrc_.label() + "_Barrel","Charge (on track, barrel)",500,0.,500.);
  meClChargeOnTrack_bpix->setAxisTitle("Charge size (in ke)",1);
  meClChargeOnTrack_fpix = iBooker.book1D("charge_" + clustersrc_.label() + "_Endcap","Charge (on track, endcap)",500,0.,500.);
  meClChargeOnTrack_fpix->setAxisTitle("Charge size (in ke)",1);
  meClChargeOnTrack_layer1 = iBooker.book1D("charge_" + clustersrc_.label() + "_Layer_1","Charge (on track, layer1)",500,0.,500.);
  meClChargeOnTrack_layer1->setAxisTitle("Charge size (in ke)",1);
  meClChargeOnTrack_layer2 = iBooker.book1D("charge_" + clustersrc_.label() + "_Layer_2","Charge (on track, layer2)",500,0.,500.);
  meClChargeOnTrack_layer2->setAxisTitle("Charge size (in ke)",1);
  meClChargeOnTrack_layer3 = iBooker.book1D("charge_" + clustersrc_.label() + "_Layer_3","Charge (on track, layer3)",500,0.,500.);
  meClChargeOnTrack_layer3->setAxisTitle("Charge size (in ke)",1);
  if (isUpgrade) {
    meClChargeOnTrack_layer4 = iBooker.book1D("charge_" + clustersrc_.label() + "_Layer_4","Charge (on track, layer4)",500,0.,500.);
    meClChargeOnTrack_layer4->setAxisTitle("Charge size (in ke)",1);
  }
  meClChargeOnTrack_diskp1 = iBooker.book1D("charge_" + clustersrc_.label() + "_Disk_p1","Charge (on track, diskp1)",500,0.,500.);
  meClChargeOnTrack_diskp1->setAxisTitle("Charge size (in ke)",1);
  meClChargeOnTrack_diskp2 = iBooker.book1D("charge_" + clustersrc_.label() + "_Disk_p2","Charge (on track, diskp2)",500,0.,500.);
  meClChargeOnTrack_diskp2->setAxisTitle("Charge size (in ke)",1);
  if (isUpgrade) {
    meClChargeOnTrack_diskp3 = iBooker.book1D("charge_" + clustersrc_.label() + "_Disk_p3","Charge (on track, diskp3)",500,0.,500.);
    meClChargeOnTrack_diskp3->setAxisTitle("Charge size (in ke)",1);
  }
  meClChargeOnTrack_diskm1 = iBooker.book1D("charge_" + clustersrc_.label() + "_Disk_m1","Charge (on track, diskm1)",500,0.,500.);
  meClChargeOnTrack_diskm1->setAxisTitle("Charge size (in ke)",1);
  meClChargeOnTrack_diskm2 = iBooker.book1D("charge_" + clustersrc_.label() + "_Disk_m2","Charge (on track, diskm2)",500,0.,500.);
  meClChargeOnTrack_diskm2->setAxisTitle("Charge size (in ke)",1);
  if (isUpgrade) {
    meClChargeOnTrack_diskm3 = iBooker.book1D("charge_" + clustersrc_.label() + "_Disk_m3","Charge (on track, diskm3)",500,0.,500.);
    meClChargeOnTrack_diskm3->setAxisTitle("Charge size (in ke)",1);
  }
  //off track
  iBooker.setCurrentFolder("Pixel/Clusters/OffTrack");
  meClChargeNotOnTrack_all = iBooker.book1D("charge_" + clustersrc_.label(),"Charge (off track)",500,0.,500.);
  meClChargeNotOnTrack_all->setAxisTitle("Charge size (in ke)",1);
  meClChargeNotOnTrack_bpix = iBooker.book1D("charge_" + clustersrc_.label() + "_Barrel","Charge (off track, barrel)",500,0.,500.);
  meClChargeNotOnTrack_bpix->setAxisTitle("Charge size (in ke)",1);
  meClChargeNotOnTrack_fpix = iBooker.book1D("charge_" + clustersrc_.label() + "_Endcap","Charge (off track, endcap)",500,0.,500.);
  meClChargeNotOnTrack_fpix->setAxisTitle("Charge size (in ke)",1);
  meClChargeNotOnTrack_layer1 = iBooker.book1D("charge_" + clustersrc_.label() + "_Layer_1","Charge (off track, layer1)",500,0.,500.);
  meClChargeNotOnTrack_layer1->setAxisTitle("Charge size (in ke)",1);
  meClChargeNotOnTrack_layer2 = iBooker.book1D("charge_" + clustersrc_.label() + "_Layer_2","Charge (off track, layer2)",500,0.,500.);
  meClChargeNotOnTrack_layer2->setAxisTitle("Charge size (in ke)",1);
  meClChargeNotOnTrack_layer3 = iBooker.book1D("charge_" + clustersrc_.label() + "_Layer_3","Charge (off track, layer3)",500,0.,500.);
  meClChargeNotOnTrack_layer3->setAxisTitle("Charge size (in ke)",1);
  if (isUpgrade) {
    meClChargeNotOnTrack_layer4 = iBooker.book1D("charge_" + clustersrc_.label() + "_Layer_4","Charge (off track, layer4)",500,0.,500.);
    meClChargeNotOnTrack_layer4->setAxisTitle("Charge size (in ke)",1);
  }
  meClChargeNotOnTrack_diskp1 = iBooker.book1D("charge_" + clustersrc_.label() + "_Disk_p1","Charge (off track, diskp1)",500,0.,500.);
  meClChargeNotOnTrack_diskp1->setAxisTitle("Charge size (in ke)",1);
  meClChargeNotOnTrack_diskp2 = iBooker.book1D("charge_" + clustersrc_.label() + "_Disk_p2","Charge (off track, diskp2)",500,0.,500.);
  meClChargeNotOnTrack_diskp2->setAxisTitle("Charge size (in ke)",1);
  if (isUpgrade) {
    meClChargeNotOnTrack_diskp3 = iBooker.book1D("charge_" + clustersrc_.label() + "_Disk_p3","Charge (off track, diskp3)",500,0.,500.);
    meClChargeNotOnTrack_diskp3->setAxisTitle("Charge size (in ke)",1);
  }
  meClChargeNotOnTrack_diskm1 = iBooker.book1D("charge_" + clustersrc_.label() + "_Disk_m1","Charge (off track, diskm1)",500,0.,500.);
  meClChargeNotOnTrack_diskm1->setAxisTitle("Charge size (in ke)",1);
  meClChargeNotOnTrack_diskm2 = iBooker.book1D("charge_" + clustersrc_.label() + "_Disk_m2","Charge (off track, diskm2)",500,0.,500.);
  meClChargeNotOnTrack_diskm2->setAxisTitle("Charge size (in ke)",1);
  if (isUpgrade) {
    meClChargeNotOnTrack_diskm3 = iBooker.book1D("charge_" + clustersrc_.label() + "_Disk_m3","Charge (off track, diskm3)",500,0.,500.);
    meClChargeNotOnTrack_diskm3->setAxisTitle("Charge size (in ke)",1);
  }

  //size
  //on track
  iBooker.setCurrentFolder("Pixel/Clusters/OnTrack");
  meClSizeOnTrack_all = iBooker.book1D("size_" + clustersrc_.label(),"Size (on track)",100,0.,100.);
  meClSizeOnTrack_all->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeOnTrack_bpix = iBooker.book1D("size_" + clustersrc_.label() + "_Barrel","Size (on track, barrel)",100,0.,100.);
  meClSizeOnTrack_bpix->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeOnTrack_fpix = iBooker.book1D("size_" + clustersrc_.label() + "_Endcap","Size (on track, endcap)",100,0.,100.);
  meClSizeOnTrack_fpix->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeOnTrack_layer1 = iBooker.book1D("size_" + clustersrc_.label() + "_Layer_1","Size (on track, layer1)",100,0.,100.);
  meClSizeOnTrack_layer1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeOnTrack_layer2 = iBooker.book1D("size_" + clustersrc_.label() + "_Layer_2","Size (on track, layer2)",100,0.,100.);
  meClSizeOnTrack_layer2->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeOnTrack_layer3 = iBooker.book1D("size_" + clustersrc_.label() + "_Layer_3","Size (on track, layer3)",100,0.,100.);
  meClSizeOnTrack_layer3->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeOnTrack_layer4 = iBooker.book1D("size_" + clustersrc_.label() + "_Layer_4","Size (on track, layer4)",100,0.,100.);
    meClSizeOnTrack_layer4->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeOnTrack_diskp1 = iBooker.book1D("size_" + clustersrc_.label() + "_Disk_p1","Size (on track, diskp1)",100,0.,100.);
  meClSizeOnTrack_diskp1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeOnTrack_diskp2 = iBooker.book1D("size_" + clustersrc_.label() + "_Disk_p2","Size (on track, diskp2)",100,0.,100.);
  meClSizeOnTrack_diskp2->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeOnTrack_diskp3 = iBooker.book1D("size_" + clustersrc_.label() + "_Disk_p3","Size (on track, diskp3)",100,0.,100.);
    meClSizeOnTrack_diskp3->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeOnTrack_diskm1 = iBooker.book1D("size_" + clustersrc_.label() + "_Disk_m1","Size (on track, diskm1)",100,0.,100.);
  meClSizeOnTrack_diskm1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeOnTrack_diskm2 = iBooker.book1D("size_" + clustersrc_.label() + "_Disk_m2","Size (on track, diskm2)",100,0.,100.);
  meClSizeOnTrack_diskm2->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeOnTrack_diskm3 = iBooker.book1D("size_" + clustersrc_.label() + "_Disk_m3","Size (on track, diskm3)",100,0.,100.);
    meClSizeOnTrack_diskm3->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeXOnTrack_all = iBooker.book1D("sizeX_" + clustersrc_.label(),"SizeX (on track)",100,0.,100.);
  meClSizeXOnTrack_all->setAxisTitle("Cluster sizeX (in pixels)",1);
  meClSizeXOnTrack_bpix = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Barrel","SizeX (on track, barrel)",100,0.,100.);
  meClSizeXOnTrack_bpix->setAxisTitle("Cluster sizeX (in pixels)",1);
  meClSizeXOnTrack_fpix = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Endcap","SizeX (on track, endcap)",100,0.,100.);
  meClSizeXOnTrack_fpix->setAxisTitle("Cluster sizeX (in pixels)",1);
  meClSizeXOnTrack_layer1 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Layer_1","SizeX (on track, layer1)",100,0.,100.);
  meClSizeXOnTrack_layer1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeXOnTrack_layer2 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Layer_2","SizeX (on track, layer2)",100,0.,100.);
  meClSizeXOnTrack_layer2->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeXOnTrack_layer3 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Layer_3","SizeX (on track, layer3)",100,0.,100.);
  meClSizeXOnTrack_layer3->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeXOnTrack_layer4 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Layer_4","SizeX (on track, layer4)",100,0.,100.);
    meClSizeXOnTrack_layer4->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeXOnTrack_diskp1 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Disk_p1","SizeX (on track, diskp1)",100,0.,100.);
  meClSizeXOnTrack_diskp1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeXOnTrack_diskp2 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Disk_p2","SizeX (on track, diskp2)",100,0.,100.);
  meClSizeXOnTrack_diskp2->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeXOnTrack_diskp3 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Disk_p3","SizeX (on track, diskp3)",100,0.,100.);
    meClSizeXOnTrack_diskp3->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeXOnTrack_diskm1 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Disk_m1","SizeX (on track, diskm1)",100,0.,100.);
  meClSizeXOnTrack_diskm1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeXOnTrack_diskm2 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Disk_m2","SizeX (on track, diskm2)",100,0.,100.);
  meClSizeXOnTrack_diskm2->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeXOnTrack_diskm3 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Disk_m3","SizeX (on track, diskm3)",100,0.,100.);
    meClSizeXOnTrack_diskm3->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeYOnTrack_all = iBooker.book1D("sizeY_" + clustersrc_.label(),"SizeY (on track)",100,0.,100.);
  meClSizeYOnTrack_all->setAxisTitle("Cluster sizeY (in pixels)",1);
  meClSizeYOnTrack_bpix = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Barrel","SizeY (on track, barrel)",100,0.,100.);
  meClSizeYOnTrack_bpix->setAxisTitle("Cluster sizeY (in pixels)",1);
  meClSizeYOnTrack_fpix = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Endcap","SizeY (on track, endcap)",100,0.,100.);
  meClSizeYOnTrack_fpix->setAxisTitle("Cluster sizeY (in pixels)",1);
  meClSizeYOnTrack_layer1 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Layer_1","SizeY (on track, layer1)",100,0.,100.);
  meClSizeYOnTrack_layer1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeYOnTrack_layer2 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Layer_2","SizeY (on track, layer2)",100,0.,100.);
  meClSizeYOnTrack_layer2->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeYOnTrack_layer3 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Layer_3","SizeY (on track, layer3)",100,0.,100.);
  meClSizeYOnTrack_layer3->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeYOnTrack_layer4 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Layer_4","SizeY (on track, layer4)",100,0.,100.);
    meClSizeYOnTrack_layer4->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeYOnTrack_diskp1 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Disk_p1","SizeY (on track, diskp1)",100,0.,100.);
  meClSizeYOnTrack_diskp1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeYOnTrack_diskp2 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Disk_p2","SizeY (on track, diskp2)",100,0.,100.);
  meClSizeYOnTrack_diskp2->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeYOnTrack_diskp3 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Disk_p3","SizeY (on track, diskp3)",100,0.,100.);
    meClSizeYOnTrack_diskp3->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeYOnTrack_diskm1 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Disk_m1","SizeY (on track, diskm1)",100,0.,100.);
  meClSizeYOnTrack_diskm1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeYOnTrack_diskm2 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Disk_m2","SizeY (on track, diskm2)",100,0.,100.);
  meClSizeYOnTrack_diskm2->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeYOnTrack_diskm3 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Disk_m3","SizeY (on track, diskm3)",100,0.,100.);
    meClSizeYOnTrack_diskm3->setAxisTitle("Cluster size (in pixels)",1);
  }
  //off track
  iBooker.setCurrentFolder("Pixel/Clusters/OffTrack");
  meClSizeNotOnTrack_all = iBooker.book1D("size_" + clustersrc_.label(),"Size (off track)",100,0.,100.);
  meClSizeNotOnTrack_all->setAxisTitle("Cluster size (in pixels)",1); 
  meClSizeNotOnTrack_bpix = iBooker.book1D("size_" + clustersrc_.label() + "_Barrel","Size (off track, barrel)",100,0.,100.);
  meClSizeNotOnTrack_bpix->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeNotOnTrack_fpix = iBooker.book1D("size_" + clustersrc_.label() + "_Endcap","Size (off track, endcap)",100,0.,100.);
  meClSizeNotOnTrack_fpix->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeNotOnTrack_layer1 = iBooker.book1D("size_" + clustersrc_.label() + "_Layer_1","Size (off track, layer1)",100,0.,100.);
  meClSizeNotOnTrack_layer1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeNotOnTrack_layer2 = iBooker.book1D("size_" + clustersrc_.label() + "_Layer_2","Size (off track, layer2)",100,0.,100.);
  meClSizeNotOnTrack_layer2->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeNotOnTrack_layer3 = iBooker.book1D("size_" + clustersrc_.label() + "_Layer_3","Size (off track, layer3)",100,0.,100.);
  meClSizeNotOnTrack_layer3->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeNotOnTrack_layer4 = iBooker.book1D("size_" + clustersrc_.label() + "_Layer_4","Size (off track, layer4)",100,0.,100.);
    meClSizeNotOnTrack_layer4->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeNotOnTrack_diskp1 = iBooker.book1D("size_" + clustersrc_.label() + "_Disk_p1","Size (off track, diskp1)",100,0.,100.);
  meClSizeNotOnTrack_diskp1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeNotOnTrack_diskp2 = iBooker.book1D("size_" + clustersrc_.label() + "_Disk_p2","Size (off track, diskp2)",100,0.,100.);
  meClSizeNotOnTrack_diskp2->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeNotOnTrack_diskp3 = iBooker.book1D("size_" + clustersrc_.label() + "_Disk_p3","Size (off track, diskp3)",100,0.,100.);
    meClSizeNotOnTrack_diskp3->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeNotOnTrack_diskm1 = iBooker.book1D("size_" + clustersrc_.label() + "_Disk_m1","Size (off track, diskm1)",100,0.,100.);
  meClSizeNotOnTrack_diskm1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeNotOnTrack_diskm2 = iBooker.book1D("size_" + clustersrc_.label() + "_Disk_m2","Size (off track, diskm2)",100,0.,100.);
  meClSizeNotOnTrack_diskm2->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeNotOnTrack_diskm3 = iBooker.book1D("size_" + clustersrc_.label() + "_Disk_m3","Size (off track, diskm3)",100,0.,100.);
    meClSizeNotOnTrack_diskm3->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeXNotOnTrack_all = iBooker.book1D("sizeX_" + clustersrc_.label(),"SizeX (off track)",100,0.,100.);
  meClSizeXNotOnTrack_all->setAxisTitle("Cluster sizeX (in pixels)",1);
  meClSizeXNotOnTrack_bpix = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Barrel","SizeX (off track, barrel)",100,0.,100.);
  meClSizeXNotOnTrack_bpix->setAxisTitle("Cluster sizeX (in pixels)",1);
  meClSizeXNotOnTrack_fpix = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Endcap","SizeX (off track, endcap)",100,0.,100.);
  meClSizeXNotOnTrack_fpix->setAxisTitle("Cluster sizeX (in pixels)",1);
  meClSizeXNotOnTrack_layer1 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Layer_1","SizeX (off track, layer1)",100,0.,100.);
  meClSizeXNotOnTrack_layer1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeXNotOnTrack_layer2 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Layer_2","SizeX (off track, layer2)",100,0.,100.);
  meClSizeXNotOnTrack_layer2->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeXNotOnTrack_layer3 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Layer_3","SizeX (off track, layer3)",100,0.,100.);
  meClSizeXNotOnTrack_layer3->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeXNotOnTrack_layer4 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Layer_4","SizeX (off track, layer4)",100,0.,100.);
    meClSizeXNotOnTrack_layer4->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeXNotOnTrack_diskp1 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Disk_p1","SizeX (off track, diskp1)",100,0.,100.);
  meClSizeXNotOnTrack_diskp1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeXNotOnTrack_diskp2 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Disk_p2","SizeX (off track, diskp2)",100,0.,100.);
  meClSizeXNotOnTrack_diskp2->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeXNotOnTrack_diskp3 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Disk_p3","SizeX (off track, diskp3)",100,0.,100.);
    meClSizeXNotOnTrack_diskp3->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeXNotOnTrack_diskm1 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Disk_m1","SizeX (off track, diskm1)",100,0.,100.);
  meClSizeXNotOnTrack_diskm1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeXNotOnTrack_diskm2 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Disk_m2","SizeX (off track, diskm2)",100,0.,100.);
  meClSizeXNotOnTrack_diskm2->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeXNotOnTrack_diskm3 = iBooker.book1D("sizeX_" + clustersrc_.label() + "_Disk_m3","SizeX (off track, diskm3)",100,0.,100.);
    meClSizeXNotOnTrack_diskm3->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeYNotOnTrack_all = iBooker.book1D("sizeY_" + clustersrc_.label(),"SizeY (off track)",100,0.,100.);
  meClSizeYNotOnTrack_all->setAxisTitle("Cluster sizeY (in pixels)",1);
  meClSizeYNotOnTrack_bpix = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Barrel","SizeY (off track, barrel)",100,0.,100.);
  meClSizeYNotOnTrack_bpix->setAxisTitle("Cluster sizeY (in pixels)",1);
  meClSizeYNotOnTrack_fpix = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Endcap","SizeY (off track, endcap)",100,0.,100.);
  meClSizeYNotOnTrack_fpix->setAxisTitle("Cluster sizeY (in pixels)",1);
  meClSizeYNotOnTrack_layer1 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Layer_1","SizeY (off track, layer1)",100,0.,100.);
  meClSizeYNotOnTrack_layer1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeYNotOnTrack_layer2 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Layer_2","SizeY (off track, layer2)",100,0.,100.);
  meClSizeYNotOnTrack_layer2->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeYNotOnTrack_layer3 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Layer_3","SizeY (off track, layer3)",100,0.,100.);
  meClSizeYNotOnTrack_layer3->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeYNotOnTrack_layer4 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Layer_4","SizeY (off track, layer4)",100,0.,100.);
    meClSizeYNotOnTrack_layer4->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeYNotOnTrack_diskp1 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Disk_p1","SizeY (off track, diskp1)",100,0.,100.);
  meClSizeYNotOnTrack_diskp1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeYNotOnTrack_diskp2 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Disk_p2","SizeY (off track, diskp2)",100,0.,100.);
  meClSizeYNotOnTrack_diskp2->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeYNotOnTrack_diskp3 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Disk_p3","SizeY (off track, diskp3)",100,0.,100.);
    meClSizeYNotOnTrack_diskp3->setAxisTitle("Cluster size (in pixels)",1);
  }
  meClSizeYNotOnTrack_diskm1 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Disk_m1","SizeY (off track, diskm1)",100,0.,100.);
  meClSizeYNotOnTrack_diskm1->setAxisTitle("Cluster size (in pixels)",1);
  meClSizeYNotOnTrack_diskm2 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Disk_m2","SizeY (off track, diskm2)",100,0.,100.);
  meClSizeYNotOnTrack_diskm2->setAxisTitle("Cluster size (in pixels)",1);
  if (isUpgrade) {
    meClSizeYNotOnTrack_diskm3 = iBooker.book1D("sizeY_" + clustersrc_.label() + "_Disk_m3","SizeY (off track, diskm3)",100,0.,100.);
    meClSizeYNotOnTrack_diskm3->setAxisTitle("Cluster size (in pixels)",1);
  }

  //cluster global position
  //on track
  iBooker.setCurrentFolder("Pixel/Clusters/OnTrack");
  //bpix
  meClPosLayer1OnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_Layer_1","Clusters Layer1 (on track)",200,-30.,30.,128,-3.2,3.2);
  meClPosLayer1OnTrack->setAxisTitle("Global Z (cm)",1);
  meClPosLayer1OnTrack->setAxisTitle("Global #phi",2);
  meClPosLayer2OnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_Layer_2","Clusters Layer2 (on track)",200,-30.,30.,128,-3.2,3.2);
  meClPosLayer2OnTrack->setAxisTitle("Global Z (cm)",1);
  meClPosLayer2OnTrack->setAxisTitle("Global #phi",2);
  meClPosLayer3OnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_Layer_3","Clusters Layer3 (on track)",200,-30.,30.,128,-3.2,3.2);
  meClPosLayer3OnTrack->setAxisTitle("Global Z (cm)",1);
  meClPosLayer3OnTrack->setAxisTitle("Global #phi",2);
  if (isUpgrade) {
    meClPosLayer4OnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_Layer_4","Clusters Layer4 (on track)",200,-30.,30.,128,-3.2,3.2);
    meClPosLayer4OnTrack->setAxisTitle("Global Z (cm)",1);
    meClPosLayer4OnTrack->setAxisTitle("Global #phi",2);
  }
  //fpix
  meClPosDisk1pzOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_pz_Disk_1","Clusters +Z Disk1 (on track)",80,-20.,20.,80,-20.,20.);
  meClPosDisk1pzOnTrack->setAxisTitle("Global X (cm)",1);
  meClPosDisk1pzOnTrack->setAxisTitle("Global Y (cm)",2);
  meClPosDisk2pzOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_pz_Disk_2","Clusters +Z Disk2 (on track)",80,-20.,20.,80,-20.,20.);
  meClPosDisk2pzOnTrack->setAxisTitle("Global X (cm)",1);
  meClPosDisk2pzOnTrack->setAxisTitle("Global Y (cm)",2);
  if (isUpgrade) {
    meClPosDisk3pzOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_pz_Disk_3","Clusters +Z Disk3 (on track)",80,-20.,20.,80,-20.,20.);
    meClPosDisk3pzOnTrack->setAxisTitle("Global X (cm)",1);
    meClPosDisk3pzOnTrack->setAxisTitle("Global Y (cm)",2);
  }
  meClPosDisk1mzOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_mz_Disk_1","Clusters -Z Disk1 (on track)",80,-20.,20.,80,-20.,20.);
  meClPosDisk1mzOnTrack->setAxisTitle("Global X (cm)",1);
  meClPosDisk1mzOnTrack->setAxisTitle("Global Y (cm)",2);
  meClPosDisk2mzOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_mz_Disk_2","Clusters -Z Disk2 (on track)",80,-20.,20.,80,-20.,20.);
  meClPosDisk2mzOnTrack->setAxisTitle("Global X (cm)",1);
  meClPosDisk2mzOnTrack->setAxisTitle("Global Y (cm)",2);
  if (isUpgrade) {
    meClPosDisk3mzOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_mz_Disk_3","Clusters -Z Disk3 (on track)",80,-20.,20.,80,-20.,20.);
    meClPosDisk3mzOnTrack->setAxisTitle("Global X (cm)",1);
    meClPosDisk3mzOnTrack->setAxisTitle("Global Y (cm)",2);
  }
  meNClustersOnTrack_all = iBooker.book1D("nclusters_" + clustersrc_.label(),"Number of Clusters (on Track)",50,0.,50.);
  meNClustersOnTrack_all->setAxisTitle("Number of Clusters",1);
  meNClustersOnTrack_bpix = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Barrel","Number of Clusters (on track, barrel)",50,0.,50.);
  meNClustersOnTrack_bpix->setAxisTitle("Number of Clusters",1);
  meNClustersOnTrack_fpix = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Endcap","Number of Clusters (on track, endcap)",50,0.,50.);
  meNClustersOnTrack_fpix->setAxisTitle("Number of Clusters",1);
  meNClustersOnTrack_layer1 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Layer_1","Number of Clusters (on track, layer1)",50,0.,50.);
  meNClustersOnTrack_layer1->setAxisTitle("Number of Clusters",1);
  meNClustersOnTrack_layer2 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Layer_2","Number of Clusters (on track, layer2)",50,0.,50.);
  meNClustersOnTrack_layer2->setAxisTitle("Number of Clusters",1);
  meNClustersOnTrack_layer3 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Layer_3","Number of Clusters (on track, layer3)",50,0.,50.);
  meNClustersOnTrack_layer3->setAxisTitle("Number of Clusters",1);
  if (isUpgrade) {
    meNClustersOnTrack_layer4 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Layer_4","Number of Clusters (on track, layer4)",50,0.,50.);
    meNClustersOnTrack_layer4->setAxisTitle("Number of Clusters",1);
  }
  meNClustersOnTrack_diskp1 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Disk_p1","Number of Clusters (on track, diskp1)",50,0.,50.);
  meNClustersOnTrack_diskp1->setAxisTitle("Number of Clusters",1);
  meNClustersOnTrack_diskp2 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Disk_p2","Number of Clusters (on track, diskp2)",50,0.,50.);
  meNClustersOnTrack_diskp2->setAxisTitle("Number of Clusters",1);
  if (isUpgrade) {
    meNClustersOnTrack_diskp3 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Disk_p3","Number of Clusters (on track, diskp3)",50,0.,50.);
    meNClustersOnTrack_diskp3->setAxisTitle("Number of Clusters",1);
  }
  meNClustersOnTrack_diskm1 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Disk_m1","Number of Clusters (on track, diskm1)",50,0.,50.);
  meNClustersOnTrack_diskm1->setAxisTitle("Number of Clusters",1);
  meNClustersOnTrack_diskm2 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Disk_m2","Number of Clusters (on track, diskm2)",50,0.,50.);
  meNClustersOnTrack_diskm2->setAxisTitle("Number of Clusters",1);
  if (isUpgrade) {
    meNClustersOnTrack_diskm3 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Disk_m3","Number of Clusters (on track, diskm3)",50,0.,50.);
    meNClustersOnTrack_diskm3->setAxisTitle("Number of Clusters",1);
  }

  //not on track
  iBooker.setCurrentFolder("Pixel/Clusters/OffTrack");
  //bpix
  meClPosLayer1NotOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_Layer_1","Clusters Layer1 (off track)",200,-30.,30.,128,-3.2,3.2);
  meClPosLayer1NotOnTrack->setAxisTitle("Global Z (cm)",1);
  meClPosLayer1NotOnTrack->setAxisTitle("Global #phi",2);
  meClPosLayer2NotOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_Layer_2","Clusters Layer2 (off track)",200,-30.,30.,128,-3.2,3.2);
  meClPosLayer2NotOnTrack->setAxisTitle("Global Z (cm)",1);
  meClPosLayer2NotOnTrack->setAxisTitle("Global #phi",2);
  meClPosLayer3NotOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_Layer_3","Clusters Layer3 (off track)",200,-30.,30.,128,-3.2,3.2);
  meClPosLayer3NotOnTrack->setAxisTitle("Global Z (cm)",1);
  meClPosLayer3NotOnTrack->setAxisTitle("Global #phi",2);
  if (isUpgrade) {
    meClPosLayer4NotOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_Layer_4","Clusters Layer4 (off track)",200,-30.,30.,128,-3.2,3.2);
    meClPosLayer4NotOnTrack->setAxisTitle("Global Z (cm)",1);
    meClPosLayer4NotOnTrack->setAxisTitle("Global #phi",2);
  }
  //fpix
  meClPosDisk1pzNotOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_pz_Disk_1","Clusters +Z Disk1 (off track)",80,-20.,20.,80,-20.,20.);
  meClPosDisk1pzNotOnTrack->setAxisTitle("Global X (cm)",1);
  meClPosDisk1pzNotOnTrack->setAxisTitle("Global Y (cm)",2);
  meClPosDisk2pzNotOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_pz_Disk_2","Clusters +Z Disk2 (off track)",80,-20.,20.,80,-20.,20.);
  meClPosDisk2pzNotOnTrack->setAxisTitle("Global X (cm)",1);
  meClPosDisk2pzNotOnTrack->setAxisTitle("Global Y (cm)",2);
  if (isUpgrade) {
    meClPosDisk3pzNotOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_pz_Disk_3","Clusters +Z Disk3 (off track)",80,-20.,20.,80,-20.,20.);
    meClPosDisk3pzNotOnTrack->setAxisTitle("Global X (cm)",1);
    meClPosDisk3pzNotOnTrack->setAxisTitle("Global Y (cm)",2);
  }
  meClPosDisk1mzNotOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_mz_Disk_1","Clusters -Z Disk1 (off track)",80,-20.,20.,80,-20.,20.);
  meClPosDisk1mzNotOnTrack->setAxisTitle("Global X (cm)",1);
  meClPosDisk1mzNotOnTrack->setAxisTitle("Global Y (cm)",2);
  meClPosDisk2mzNotOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_mz_Disk_2","Clusters -Z Disk2 (off track)",80,-20.,20.,80,-20.,20.);
  meClPosDisk2mzNotOnTrack->setAxisTitle("Global X (cm)",1);
  meClPosDisk2mzNotOnTrack->setAxisTitle("Global Y (cm)",2);
  if (isUpgrade) {
    meClPosDisk3mzNotOnTrack = iBooker.book2D("position_" + clustersrc_.label() + "_mz_Disk_3","Clusters -Z Disk3 (off track)",80,-20.,20.,80,-20.,20.);
    meClPosDisk3mzNotOnTrack->setAxisTitle("Global X (cm)",1);
    meClPosDisk3mzNotOnTrack->setAxisTitle("Global Y (cm)",2);
  }
  meNClustersNotOnTrack_all = iBooker.book1D("nclusters_" + clustersrc_.label(),"Number of Clusters (off Track)",50,0.,50.);
  meNClustersNotOnTrack_all->setAxisTitle("Number of Clusters",1);
  meNClustersNotOnTrack_bpix = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Barrel","Number of Clusters (off track, barrel)",50,0.,50.);
  meNClustersNotOnTrack_bpix->setAxisTitle("Number of Clusters",1);
  meNClustersNotOnTrack_fpix = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Endcap","Number of Clusters (off track, endcap)",50,0.,50.);
  meNClustersNotOnTrack_fpix->setAxisTitle("Number of Clusters",1);
  meNClustersNotOnTrack_layer1 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Layer_1","Number of Clusters (off track, layer1)",50,0.,50.);
  meNClustersNotOnTrack_layer1->setAxisTitle("Number of Clusters",1);
  meNClustersNotOnTrack_layer2 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Layer_2","Number of Clusters (off track, layer2)",50,0.,50.);
  meNClustersNotOnTrack_layer2->setAxisTitle("Number of Clusters",1);
  meNClustersNotOnTrack_layer3 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Layer_3","Number of Clusters (off track, layer3)",50,0.,50.);
  meNClustersNotOnTrack_layer3->setAxisTitle("Number of Clusters",1);
  if (isUpgrade) {
    meNClustersNotOnTrack_layer4 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Layer_4","Number of Clusters (off track, layer4)",50,0.,50.);
    meNClustersNotOnTrack_layer4->setAxisTitle("Number of Clusters",1);
  }
  meNClustersNotOnTrack_diskp1 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Disk_p1","Number of Clusters (off track, diskp1)",50,0.,50.);
  meNClustersNotOnTrack_diskp1->setAxisTitle("Number of Clusters",1);
  meNClustersNotOnTrack_diskp2 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Disk_p2","Number of Clusters (off track, diskp2)",50,0.,50.);
  meNClustersNotOnTrack_diskp2->setAxisTitle("Number of Clusters",1);
  if (isUpgrade) {
    meNClustersNotOnTrack_diskp3 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Disk_p3","Number of Clusters (off track, diskp3)",50,0.,50.);
    meNClustersNotOnTrack_diskp3->setAxisTitle("Number of Clusters",1);
  }
  meNClustersNotOnTrack_diskm1 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Disk_m1","Number of Clusters (off track, diskm1)",50,0.,50.);
  meNClustersNotOnTrack_diskm1->setAxisTitle("Number of Clusters",1);
  meNClustersNotOnTrack_diskm2 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Disk_m2","Number of Clusters (off track, diskm2)",50,0.,50.);
  meNClustersNotOnTrack_diskm2->setAxisTitle("Number of Clusters",1);
  if (isUpgrade) {
    meNClustersNotOnTrack_diskm3 = iBooker.book1D("nclusters_" + clustersrc_.label() + "_Disk_m3","Number of Clusters (off track, diskm3)",50,0.,50.);
    meNClustersNotOnTrack_diskm3->setAxisTitle("Number of Clusters",1);
  }

  //HitProbability
  //on track
  iBooker.setCurrentFolder("Pixel/Clusters/OnTrack");
  meHitProbability = iBooker.book1D("FractionLowProb","Fraction of hits with low probability;FractionLowProb;#HitsOnTrack",100,0.,1.);

  if (debug_) {
    // book summary residual histograms in a debugging folder - one (x,y) pair of histograms per subdetector 
    iBooker.setCurrentFolder("debugging"); 
    char hisID[80]; 
    for (int s=0; s<3; s++) {
      sprintf(hisID,"residual_x_subdet_%i",s); 
      meSubdetResidualX[s] = iBooker.book1D(hisID,"Pixel Hit-to-Track Residual in X",500,-5.,5.);
      
      sprintf(hisID,"residual_y_subdet_%i",s);
      meSubdetResidualY[s] = iBooker.book1D(hisID,"Pixel Hit-to-Track Residual in Y",500,-5.,5.);  
    }
  }
  
  firstRun = false;
}


void SiPixelTrackResidualSource::analyze(const edm::Event& iEvent, const edm::EventSetup& iSetup) {
  //Retrieve tracker topology from geometry
  edm::ESHandle<TrackerTopology> tTopoHandle;
  iSetup.get<IdealGeometryRecord>().get(tTopoHandle);
  const TrackerTopology* const tTopo = tTopoHandle.product();


  
  // retrieve TrackerGeometry again and MagneticField for use in transforming 
  // a TrackCandidate's P(ersistent)TrajectoryStateoOnDet (PTSoD) to a TrajectoryStateOnSurface (TSoS)
  ESHandle<TrackerGeometry> TG;
  iSetup.get<TrackerDigiGeometryRecord>().get(TG);
  const TrackerGeometry* theTrackerGeometry = TG.product();
  
  //analytic triplet method to calculate the track residuals in the pixe barrel detector    
  
  //--------------------------------------------------------------------
  // beam spot:
  //
  edm::Handle<reco::BeamSpot> rbs;
  //iEvent.getByLabel( "offlineBeamSpot", rbs );
  iEvent.getByToken( beamSpotToken_, rbs );
  math::XYZPoint bsP = math::XYZPoint(0,0,0);
  if( !rbs.failedToGet() && rbs.isValid() )
    {
      bsP = math::XYZPoint( rbs->x0(), rbs->y0(), rbs->z0() );
    }
  
  //--------------------------------------------------------------------
  // primary vertices:
  //
  edm::Handle<reco::VertexCollection> vertices;
  //iEvent.getByLabel("offlinePrimaryVertices", vertices );
  iEvent.getByToken(  offlinePrimaryVerticesToken_, vertices );
  
  if( vertices.failedToGet() ) return;
  if( !vertices.isValid() ) return;
  
  math::XYZPoint vtxN = math::XYZPoint(0,0,0);
  math::XYZPoint vtxP = math::XYZPoint(0,0,0);
  
  double bestNdof = 0;
  double maxSumPt = 0;
  reco::Vertex bestPvx;
  for(reco::VertexCollection::const_iterator iVertex = vertices->begin();
      iVertex != vertices->end(); ++iVertex ) {
    if( iVertex->ndof() > bestNdof ) {
      bestNdof = iVertex->ndof();
      vtxN = math::XYZPoint( iVertex->x(), iVertex->y(), iVertex->z() );
    }//ndof
    if( iVertex->p4().pt() > maxSumPt ) {
      maxSumPt = iVertex->p4().pt();
      vtxP = math::XYZPoint( iVertex->x(), iVertex->y(), iVertex->z() );
      bestPvx = *iVertex;
    }//sumpt
    
  }//vertex
  
  if( maxSumPt < 1 ) return;
  
  if( maxSumPt < 1 ) vtxP = vtxN;
  
  //---------------------------------------------
  //get Tracks
  //
  edm:: Handle<reco::TrackCollection> TracksForRes;
  //iEvent.getByLabel( "generalTracks", TracksForRes );
  iEvent.getByToken(  generalTracksToken_, TracksForRes );

  //
  // transient track builder, needs B-field from data base (global tag in .py)
  //
  edm::ESHandle<TransientTrackBuilder> theB;
  iSetup.get<TransientTrackRecord>().get( "TransientTrackBuilder", theB );

  //get the TransienTrackingRecHitBuilder needed for extracting the global position of the hits in the pixel
  edm::ESHandle<TransientTrackingRecHitBuilder> theTrackerRecHitBuilder;
  iSetup.get<TransientRecHitRecord>().get(ttrhbuilder_,theTrackerRecHitBuilder);

  //check that tracks are valid
  if( TracksForRes.failedToGet() ) return;
  if( !TracksForRes.isValid() ) return;

  //get tracker geometry
  edm::ESHandle<TrackerGeometry> pDD;
  iSetup.get<TrackerDigiGeometryRecord>().get(pDD);
  
  if( !pDD.isValid() ) {
    cout << "Unable to find TrackerDigiGeometry. Return\n";
    return;
  }
 
  int kk = -1;
  //----------------------------------------------------------------------------
  // Residuals:
  //
  for( reco::TrackCollection::const_iterator iTrack = TracksForRes->begin();
       iTrack != TracksForRes->end(); ++iTrack ) {
    //count
    kk++;
    //Calculate minimal track pt before curling
    // cpt = cqRB = 0.3*R[m]*B[T] = 1.14*R[m] for B=3.8T
    // D = 2R = 2*pt/1.14
    // calo: D = 1.3 m => pt = 0.74 GeV/c
    double pt = iTrack->pt();
    if( pt < 0.75 ) continue;// curls up
    if( abs( iTrack->dxy(vtxP) ) > 5*iTrack->dxyError() ) continue; // not prompt
    
    double charge = iTrack->charge();
       
    reco::TransientTrack tTrack = theB->build(*iTrack);
    //get curvature of the track, needed for the residuals
    double kap = tTrack.initialFreeState().transverseCurvature();
    //needed for the TransienTrackingRecHitBuilder
    TrajectoryStateOnSurface initialTSOS = tTrack.innermostMeasurementState();
    if( iTrack->extra().isNonnull() &&iTrack->extra().isAvailable() ){
      
      double x1 = 0;
      double y1 = 0;
      double z1 = 0;
      double x2 = 0;
      double y2 = 0;
      double z2 = 0;
      double x3 = 0;
      double y3 = 0;
      double z3 = 0;
      int n1 = 0;
      int n2 = 0;
      int n3 = 0;
      
      //for saving the pixel barrel hits
      vector<TransientTrackingRecHit::RecHitPointer> GoodPixBarrelHits;
      //looping through the RecHits of the track
      for( trackingRecHit_iterator irecHit = iTrack->recHitsBegin();
       irecHit != iTrack->recHitsEnd(); ++irecHit){
    
    if( (*irecHit)->isValid() ){
      DetId detId = (*irecHit)->geographicalId();
      // enum Detector { Tracker=1, Muon=2, Ecal=3, Hcal=4, Calo=5 };
      if( detId.det() != 1 ){
        if(debug_){
          cout << "rec hit ID = " << detId.det() << " not in tracker!?!?\n";
        }
        continue;
      }
      uint32_t subDet = detId.subdetId();
      
      // enum SubDetector{ PixelBarrel=1, PixelEndcap=2 };
      // enum SubDetector{ TIB=3, TID=4, TOB=5, TEC=6 };
      
      TransientTrackingRecHit::RecHitPointer trecHit = theTrackerRecHitBuilder->build(  &*(*irecHit), initialTSOS);
      
      
      double gX = trecHit->globalPosition().x();
      double gY = trecHit->globalPosition().y();
      double gZ = trecHit->globalPosition().z();
          
          
          if( subDet == PixelSubdetector::PixelBarrel ) {

        int ilay = tTopo->pxbLayer(detId);
        
        if( ilay == 1 ){
          n1++;
          x1 = gX;
          y1 = gY;
          z1 = gZ;
          
          GoodPixBarrelHits.push_back((trecHit));
        }//PXB1
        if( ilay == 2 ){
          
          n2++;
          x2 = gX;
          y2 = gY;
          z2 = gZ;
          
          GoodPixBarrelHits.push_back((trecHit));
          
        }//PXB2
        if( ilay == 3 ){
          
          n3++;
          x3 = gX;
          y3 = gY;
          z3 = gZ;
          GoodPixBarrelHits.push_back((trecHit));
        }
          }//PXB
          
          
        }//valid
      }//loop rechits
      
      //CS extra plots    
      
          
      if( n1+n2+n3 == 3 && n1*n2*n3 > 0) {      
        for( unsigned int i = 0; i < GoodPixBarrelHits.size(); i++){
          
          if( GoodPixBarrelHits[i]->isValid() ){
        DetId detId = GoodPixBarrelHits[i]->geographicalId().rawId();
        int ilay = tTopo->pxbLayer(detId);
        if(pt > ptminres_){   
          
          double dca2 = 0.0, dz2=0.0;
          double ptsig = pt;
          if(charge<0.) ptsig = -pt;
          //Filling the histograms in modules
          
          MeasurementPoint Test;
          MeasurementPoint Test2;
          Test=MeasurementPoint(0,0);
          Test2=MeasurementPoint(0,0);
          Measurement2DVector residual;
         
          if( ilay == 1 ){
            
            triplets(x2,y2,z2,x1,y1,z1,x3,y3,z3,ptsig,dca2,dz2, kap);   
                    
            Test=MeasurementPoint(dca2*1E4,dz2*1E4);
            residual=Test-Test2;
          }
          
          if( ilay == 2 ){
            
            triplets(x1,y1,z1,x2,y2,z2,x3,y3,z3,ptsig,dca2,dz2, kap);
            
            Test=MeasurementPoint(dca2*1E4,dz2*1E4);
            residual=Test-Test2;
          
          }
          
          if( ilay == 3 ){
            
            triplets(x1,y1,z1,x3,y3,z3,x2,y2,z2,ptsig,dca2,dz2, kap);
            
            Test=MeasurementPoint(dca2*1E4,dz2*1E4);
            residual=Test-Test2;
        }
          // fill the residual histograms 

          std::map<uint32_t, SiPixelTrackResidualModule*>::iterator pxd = theSiPixelStructure.find(detId);
          if (pxd!=theSiPixelStructure.end()) (*pxd).second->fill(residual, reducedSet, modOn, ladOn, layOn, phiOn, bladeOn, diskOn, ringOn);       
        }//three hits
          }//is valid
        }//rechits loop
      }//pt 4
    }
    
    
 }//-----Tracks
  //get trajectories
  edm::Handle<std::vector<Trajectory> > trajCollectionHandle;
  //iEvent.getByLabel(tracksrc_,trajCollectionHandle);
  iEvent.getByToken ( tracksrcToken_, trajCollectionHandle );
  const std::vector<Trajectory> trajColl = *(trajCollectionHandle.product());
   
  //get tracks
  edm::Handle<std::vector<reco::Track> > trackCollectionHandle;
  //iEvent.getByLabel(tracksrc_,trackCollectionHandle);
  iEvent.getByToken( trackToken_, trackCollectionHandle );

  const std::vector<reco::Track> trackColl = *(trackCollectionHandle.product());

  //get the map
  edm::Handle<TrajTrackAssociationCollection> match;
  //iEvent.getByLabel(tracksrc_,match);
  iEvent.getByToken( trackAssociationToken_, match);
  const TrajTrackAssociationCollection ttac = *(match.product());

  // get clusters
  edm::Handle< edmNew::DetSetVector<SiPixelCluster> >  clusterColl;
  //iEvent.getByLabel( clustersrc_, clusterColl );
  iEvent.getByToken( clustersrcToken_, clusterColl );
  const edmNew::DetSetVector<SiPixelCluster> clustColl = *(clusterColl.product());

  if(debug_){
    std::cout << "Trajectories\t : " << trajColl.size() << std::endl;
    std::cout << "recoTracks  \t : " << trackColl.size() << std::endl;
    std::cout << "Map entries \t : " << ttac.size() << std::endl;
  }

  std::set<SiPixelCluster> clusterSet;
  TrajectoryStateCombiner tsoscomb;
  int tracks=0, pixeltracks=0, bpixtracks=0, fpixtracks=0; 
  int trackclusters=0, barreltrackclusters=0, endcaptrackclusters=0;
  int otherclusters=0, barrelotherclusters=0, endcapotherclusters=0;

  //Loop over map entries
  for(TrajTrackAssociationCollection::const_iterator it =  ttac.begin();it !=  ttac.end(); ++it){
    const edm::Ref<std::vector<Trajectory> > traj_iterator = it->key;  
    // Trajectory Map, extract Trajectory for this track
    reco::TrackRef trackref = it->val;
    tracks++;

    bool isBpixtrack = false, isFpixtrack = false, crossesPixVol=false;
    
    //find out whether track crosses pixel fiducial volume (for cosmic tracks)
    
    double d0 = (*trackref).d0(), dz = (*trackref).dz(); 
    
    if(abs(d0)<15 && abs(dz)<50) crossesPixVol = true;

    std::vector<TrajectoryMeasurement> tmeasColl =traj_iterator->measurements();
    std::vector<TrajectoryMeasurement>::const_iterator tmeasIt;
    //loop on measurements to find out whether there are bpix and/or fpix hits
    for(tmeasIt = tmeasColl.begin();tmeasIt!=tmeasColl.end();tmeasIt++){
      if(! tmeasIt->updatedState().isValid()) continue; 
      TransientTrackingRecHit::ConstRecHitPointer testhit = tmeasIt->recHit();
      if(! testhit->isValid() || testhit->geographicalId().det() != DetId::Tracker) continue; 
      uint testSubDetID = (testhit->geographicalId().subdetId()); 
      if(testSubDetID==PixelSubdetector::PixelBarrel) isBpixtrack = true;
      if(testSubDetID==PixelSubdetector::PixelEndcap) isFpixtrack = true;
    }//end loop on measurements
    if(isBpixtrack) {
      bpixtracks++; 
      if(debug_) std::cout << "bpixtrack\n";
    }
    if(isFpixtrack) {
      fpixtracks++; 
      if(debug_) std::cout << "fpixtrack\n";
    }
    if(isBpixtrack || isFpixtrack){
      pixeltracks++;
      
      if(crossesPixVol) meNofTracksInPixVol_->Fill(0,1);

      std::vector<TrajectoryMeasurement> tmeasColl = traj_iterator->measurements();
      for(std::vector<TrajectoryMeasurement>::const_iterator tmeasIt = tmeasColl.begin(); tmeasIt!=tmeasColl.end(); tmeasIt++){   
    if(! tmeasIt->updatedState().isValid()) continue; 
    
    TrajectoryStateOnSurface tsos = tsoscomb( tmeasIt->forwardPredictedState(), tmeasIt->backwardPredictedState() );
    TransientTrackingRecHit::ConstRecHitPointer hit = tmeasIt->recHit();
    if(! hit->isValid() || hit->geographicalId().det() != DetId::Tracker ) {
      continue; 
    } else {
      
//    //residual
          const DetId & hit_detId = hit->geographicalId();
      //uint IntRawDetID = (hit_detId.rawId());
      uint IntSubDetID = (hit_detId.subdetId());
      
      if(IntSubDetID == 0 ) continue; // don't look at SiStrip hits!        

      // get the enclosed persistent hit
      const TrackingRecHit *persistentHit = hit->hit();
      // check if it's not null, and if it's a valid pixel hit
      if ((persistentHit != 0) && (typeid(*persistentHit) == typeid(SiPixelRecHit))) {
        // tell the C++ compiler that the hit is a pixel hit
        const SiPixelRecHit* pixhit = static_cast<const SiPixelRecHit*>( hit->hit() );
        //Hit probability:
        float hit_prob = -1.;
        if(pixhit->hasFilledProb()){
          hit_prob = pixhit->clusterProbability(0);
          //std::cout<<"HITPROB= "<<hit_prob<<std::endl;
          if(hit_prob<pow(10.,-15.)) NLowProb++;
          NTotal++;
          if(NTotal>0) meHitProbability->Fill(float(NLowProb/NTotal));
        }
        
        // get the edm::Ref to the cluster
        edm::Ref<edmNew::DetSetVector<SiPixelCluster>, SiPixelCluster> const& clust = (*pixhit).cluster();
        //  check if the ref is not null
        if (clust.isNonnull()) {

          //define tracker and pixel geometry and topology
          const TrackerGeometry& theTracker(*theTrackerGeometry);
          const PixelGeomDetUnit* theGeomDet = static_cast<const PixelGeomDetUnit*> (theTracker.idToDet(hit_detId) );
          //test if PixelGeomDetUnit exists
          if(theGeomDet == 0) {
        if(debug_) std::cout << "NO THEGEOMDET\n";
        continue;
          }

          const PixelTopology * topol = &(theGeomDet->specificTopology());
          //fill histograms for clusters on tracks
          //correct SiPixelTrackResidualModule
          std::map<uint32_t, SiPixelTrackResidualModule*>::iterator pxd = theSiPixelStructure.find((*hit).geographicalId().rawId());

          //CHARGE CORRECTION (for track impact angle)
          // calculate alpha and beta from cluster position
          LocalTrajectoryParameters ltp = tsos.localParameters();
          LocalVector localDir = ltp.momentum()/ltp.momentum().mag();
          
          float clust_alpha = atan2(localDir.z(), localDir.x());
          float clust_beta = atan2(localDir.z(), localDir.y());
          double corrCharge = clust->charge() * sqrt( 1.0 / ( 1.0/pow( tan(clust_alpha), 2 ) + 
                                  1.0/pow( tan(clust_beta ), 2 ) + 
                                  1.0 )
                              )/1000.;

          if (pxd!=theSiPixelStructure.end()) (*pxd).second->fill((*clust), true, corrCharge, reducedSet, modOn, ladOn, layOn, phiOn, bladeOn, diskOn, ringOn);     


          trackclusters++;
          //CORR CHARGE
          meClChargeOnTrack_all->Fill(corrCharge);
          meClSizeOnTrack_all->Fill((*clust).size());
          meClSizeXOnTrack_all->Fill((*clust).sizeX());
          meClSizeYOnTrack_all->Fill((*clust).sizeY());
          clusterSet.insert(*clust);

          //find cluster global position (rphi, z)
          // get cluster center of gravity (of charge)
          float xcenter = clust->x();
          float ycenter = clust->y();
          // get the cluster position in local coordinates (cm) 
          LocalPoint clustlp = topol->localPosition( MeasurementPoint(xcenter, ycenter) );
          // get the cluster position in global coordinates (cm)
          GlobalPoint clustgp = theGeomDet->surface().toGlobal( clustlp );

          //find location of hit (barrel or endcap, same for cluster)
          bool barrel = DetId((*hit).geographicalId()).subdetId() == static_cast<int>(PixelSubdetector::PixelBarrel);
          bool endcap = DetId((*hit).geographicalId()).subdetId() == static_cast<int>(PixelSubdetector::PixelEndcap);
          if(barrel) {
        barreltrackclusters++;
        //CORR CHARGE
        meClChargeOnTrack_bpix->Fill(corrCharge);
        meClSizeOnTrack_bpix->Fill((*clust).size());
        meClSizeXOnTrack_bpix->Fill((*clust).sizeX());
        meClSizeYOnTrack_bpix->Fill((*clust).sizeY());
        uint32_t DBlayer;
        if (!isUpgrade) { DBlayer = PixelBarrelName(DetId((*hit).geographicalId())).layerName(); }
                else { DBlayer = PixelBarrelNameUpgrade(DetId((*hit).geographicalId())).layerName(); }
        float phi = clustgp.phi(); 
        float z = clustgp.z();
        switch(DBlayer){
        case 1: {
          meClPosLayer1OnTrack->Fill(z,phi); 
          meClChargeOnTrack_layer1->Fill(corrCharge);
          meClSizeOnTrack_layer1->Fill((*clust).size());
          meClSizeXOnTrack_layer1->Fill((*clust).sizeX());
          meClSizeYOnTrack_layer1->Fill((*clust).sizeY());
          break;
        }
        case 2: {
          meClPosLayer2OnTrack->Fill(z,phi); 
          meClChargeOnTrack_layer2->Fill(corrCharge);
          meClSizeOnTrack_layer2->Fill((*clust).size());
          meClSizeXOnTrack_layer2->Fill((*clust).sizeX());
          meClSizeYOnTrack_layer2->Fill((*clust).sizeY());
          break;
        }
        case 3: {
          meClPosLayer3OnTrack->Fill(z,phi); 
          meClChargeOnTrack_layer3->Fill(corrCharge);
          meClSizeOnTrack_layer3->Fill((*clust).size());
          meClSizeXOnTrack_layer3->Fill((*clust).sizeX());
          meClSizeYOnTrack_layer3->Fill((*clust).sizeY());
          break;
        }
        case 4: {
          if (isUpgrade) {
            meClPosLayer4OnTrack->Fill(z,phi); 
            meClChargeOnTrack_layer4->Fill(corrCharge);
            meClSizeOnTrack_layer4->Fill((*clust).size());
            meClSizeXOnTrack_layer4->Fill((*clust).sizeX());
            meClSizeYOnTrack_layer4->Fill((*clust).sizeY());
          }
          break;
        }
        
        }
        
          }
          if(endcap) {
        endcaptrackclusters++;
        //CORR CHARGE
        meClChargeOnTrack_fpix->Fill(corrCharge);
        meClSizeOnTrack_fpix->Fill((*clust).size());
        meClSizeXOnTrack_fpix->Fill((*clust).sizeX());
        meClSizeYOnTrack_fpix->Fill((*clust).sizeY());
        uint32_t DBdisk;
                if (!isUpgrade) { DBdisk = PixelEndcapName(DetId((*hit).geographicalId())).diskName(); }
                else if (isUpgrade) { DBdisk = PixelEndcapNameUpgrade(DetId((*hit).geographicalId())).diskName(); }
        float x = clustgp.x(); 
        float y = clustgp.y(); 
        float z = clustgp.z();
        if(z>0){
          if(DBdisk==1) {
            meClPosDisk1pzOnTrack->Fill(x,y);
            meClChargeOnTrack_diskp1->Fill(corrCharge);
            meClSizeOnTrack_diskp1->Fill((*clust).size());
            meClSizeXOnTrack_diskp1->Fill((*clust).sizeX());
            meClSizeYOnTrack_diskp1->Fill((*clust).sizeY());
          }
          if(DBdisk==2) {
            meClPosDisk2pzOnTrack->Fill(x,y); 
            meClChargeOnTrack_diskp2->Fill(corrCharge);
            meClSizeOnTrack_diskp2->Fill((*clust).size());
            meClSizeXOnTrack_diskp2->Fill((*clust).sizeX());
            meClSizeYOnTrack_diskp2->Fill((*clust).sizeY());
          }
          if(DBdisk==3 && isUpgrade) {
            meClPosDisk3pzOnTrack->Fill(x,y);
                    meClChargeOnTrack_diskp3->Fill(corrCharge);
            meClSizeOnTrack_diskp3->Fill((*clust).size());
            meClSizeXOnTrack_diskp3->Fill((*clust).sizeX());
            meClSizeYOnTrack_diskp3->Fill((*clust).sizeY());
          }
        }
        else{
          if(DBdisk==1) {
            meClPosDisk1mzOnTrack->Fill(x,y);
            meClChargeOnTrack_diskm1->Fill(corrCharge);
            meClSizeOnTrack_diskm1->Fill((*clust).size());
            meClSizeXOnTrack_diskm1->Fill((*clust).sizeX());
            meClSizeYOnTrack_diskm1->Fill((*clust).sizeY());
          }
          if(DBdisk==2) {
            meClPosDisk2mzOnTrack->Fill(x,y); 
            meClChargeOnTrack_diskm2->Fill(corrCharge);
            meClSizeOnTrack_diskm2->Fill((*clust).size());
            meClSizeXOnTrack_diskm2->Fill((*clust).sizeX());
            meClSizeYOnTrack_diskm2->Fill((*clust).sizeY());
          }
          if(DBdisk==3 && isUpgrade) {
            meClPosDisk3mzOnTrack->Fill(x,y);
                    meClChargeOnTrack_diskm3->Fill(corrCharge);
            meClSizeOnTrack_diskm3->Fill((*clust).size());
            meClSizeXOnTrack_diskm3->Fill((*clust).sizeX());
            meClSizeYOnTrack_diskm3->Fill((*clust).sizeY());
          }
        } 
          }
          
        }//end if (cluster exists)

      }//end if (persistent hit exists and is pixel hit)
      
    }//end of else 
    
    
      }//end for (all traj measurements of pixeltrack)
    }//end if (is pixeltrack)
    else {
      if(debug_) std::cout << "no pixeltrack:\n";
      if(crossesPixVol) meNofTracksInPixVol_->Fill(1,1);
    }
    
  }//end loop on map entries

  //find clusters that are NOT on track
  //edmNew::DetSet<SiPixelCluster>::const_iterator  di;
  if(debug_) std::cout << "clusters not on track: (size " << clustColl.size() << ") ";

  for(TrackerGeometry::DetContainer::const_iterator it = TG->dets().begin(); it != TG->dets().end(); it++){
    //if(dynamic_cast<PixelGeomDetUnit const *>((*it))!=0){
    DetId detId = (*it)->geographicalId();
    if(detId>=302055684 && detId<=352477708){ // make sure it's a Pixel module WITHOUT using dynamic_cast!  
      int nofclOnTrack = 0, nofclOffTrack=0; 
      uint32_t DBlayer=10, DBdisk=10; 
      float z=0.; 
      //set layer/disk
      if(DetId(detId).subdetId() == 1) { // Barrel module
        if (!isUpgrade) {
    DBlayer = PixelBarrelName(DetId(detId)).layerName();
    } else if (isUpgrade) {
      DBlayer = PixelBarrelNameUpgrade(DetId(detId)).layerName();
    }
      }
      if(DetId(detId).subdetId() == 2){ // Endcap module
        if (!isUpgrade) { DBdisk = PixelEndcapName(DetId(detId )).diskName(); }
        else if (isUpgrade) { DBdisk = PixelEndcapNameUpgrade(DetId(detId )).diskName(); }
      }
      edmNew::DetSetVector<SiPixelCluster>::const_iterator isearch = clustColl.find(detId);
      if( isearch != clustColl.end() ) {  // Not an empty iterator
    edmNew::DetSet<SiPixelCluster>::const_iterator  di;
    for(di=isearch->begin(); di!=isearch->end(); di++){
      unsigned int temp = clusterSet.size();
      clusterSet.insert(*di);
      //check if cluster is off track
      if(clusterSet.size()>temp) {
        otherclusters++;
        nofclOffTrack++; 
        //fill histograms for clusters off tracks
        //correct SiPixelTrackResidualModule
        std::map<uint32_t, SiPixelTrackResidualModule*>::iterator pxd = theSiPixelStructure.find((*it)->geographicalId().rawId());

        if (pxd!=theSiPixelStructure.end()) (*pxd).second->fill((*di), false, -1., reducedSet, modOn, ladOn, layOn, phiOn, bladeOn, diskOn, ringOn); 
        


        meClSizeNotOnTrack_all->Fill((*di).size());
        meClSizeXNotOnTrack_all->Fill((*di).sizeX());
        meClSizeYNotOnTrack_all->Fill((*di).sizeY());
        meClChargeNotOnTrack_all->Fill((*di).charge()/1000);

        //find cluster global position (rphi, z) get cluster
        //define tracker and pixel geometry and topology
        const TrackerGeometry& theTracker(*theTrackerGeometry);
        const PixelGeomDetUnit* theGeomDet = static_cast<const PixelGeomDetUnit*> (theTracker.idToDet(detId) );
        //test if PixelGeomDetUnit exists
        if(theGeomDet == 0) {
          if(debug_) std::cout << "NO THEGEOMDET\n";
          continue;
        }
        const PixelTopology * topol = &(theGeomDet->specificTopology());
       
        //center of gravity (of charge)
        float xcenter = di->x();
        float ycenter = di->y();
        // get the cluster position in local coordinates (cm) 
        LocalPoint clustlp = topol->localPosition( MeasurementPoint(xcenter, ycenter) );
        // get the cluster position in global coordinates (cm)
        GlobalPoint clustgp = theGeomDet->surface().toGlobal( clustlp );


        //barrel
        if(DetId(detId).subdetId() == 1) {
          meClSizeNotOnTrack_bpix->Fill((*di).size());
          meClSizeXNotOnTrack_bpix->Fill((*di).sizeX());
          meClSizeYNotOnTrack_bpix->Fill((*di).sizeY());
          meClChargeNotOnTrack_bpix->Fill((*di).charge()/1000);
          barrelotherclusters++;
          //DBlayer = PixelBarrelName(DetId(detId)).layerName();
          float phi = clustgp.phi(); 
          //float r = clustgp.perp();
          z = clustgp.z();
          switch(DBlayer){
          case 1: {
        meClPosLayer1NotOnTrack->Fill(z,phi); 
        meClSizeNotOnTrack_layer1->Fill((*di).size());
        meClSizeXNotOnTrack_layer1->Fill((*di).sizeX());
        meClSizeYNotOnTrack_layer1->Fill((*di).sizeY());
        meClChargeNotOnTrack_layer1->Fill((*di).charge()/1000);
        break;
          }
          case 2: {
        meClPosLayer2NotOnTrack->Fill(z,phi);
        meClSizeNotOnTrack_layer2->Fill((*di).size());
        meClSizeXNotOnTrack_layer2->Fill((*di).sizeX());
        meClSizeYNotOnTrack_layer2->Fill((*di).sizeY());
        meClChargeNotOnTrack_layer2->Fill((*di).charge()/1000);
        break;
          }
          case 3: {
        meClPosLayer3NotOnTrack->Fill(z,phi); 
        meClSizeNotOnTrack_layer3->Fill((*di).size());
        meClSizeXNotOnTrack_layer3->Fill((*di).sizeX());
        meClSizeYNotOnTrack_layer3->Fill((*di).sizeY());
        meClChargeNotOnTrack_layer3->Fill((*di).charge()/1000);
        break;
          }
          case 4: {
            if (isUpgrade) {
          meClPosLayer4NotOnTrack->Fill(z,phi); 
          meClSizeNotOnTrack_layer4->Fill((*di).size());
          meClSizeXNotOnTrack_layer4->Fill((*di).sizeX());
          meClSizeYNotOnTrack_layer4->Fill((*di).sizeY());
          meClChargeNotOnTrack_layer4->Fill((*di).charge()/1000);
        }
        break;
          }
        
          }
        }
        //endcap
        if(DetId(detId).subdetId() == 2) {
          meClSizeNotOnTrack_fpix->Fill((*di).size());
          meClSizeXNotOnTrack_fpix->Fill((*di).sizeX());
          meClSizeYNotOnTrack_fpix->Fill((*di).sizeY());
          meClChargeNotOnTrack_fpix->Fill((*di).charge()/1000);
          endcapotherclusters++;
          //DBdisk = PixelEndcapName(DetId(detId )).diskName();
          float x = clustgp.x(); 
          float y = clustgp.y(); 
          z = clustgp.z();
          if(z>0){
        if(DBdisk==1) {
          meClPosDisk1pzNotOnTrack->Fill(x,y);
          meClSizeNotOnTrack_diskp1->Fill((*di).size());
          meClSizeXNotOnTrack_diskp1->Fill((*di).sizeX());
          meClSizeYNotOnTrack_diskp1->Fill((*di).sizeY());
          meClChargeNotOnTrack_diskp1->Fill((*di).charge()/1000);
        }
        if(DBdisk==2) {
          meClPosDisk2pzNotOnTrack->Fill(x,y); 
          meClSizeNotOnTrack_diskp2->Fill((*di).size());
          meClSizeXNotOnTrack_diskp2->Fill((*di).sizeX());
          meClSizeYNotOnTrack_diskp2->Fill((*di).sizeY());
          meClChargeNotOnTrack_diskp2->Fill((*di).charge()/1000);
        }
        if(DBdisk==3 && isUpgrade) {
          meClPosDisk3pzNotOnTrack->Fill(x,y);
                  meClSizeNotOnTrack_diskp3->Fill((*di).size());
          meClSizeXNotOnTrack_diskp3->Fill((*di).sizeX());
          meClSizeYNotOnTrack_diskp3->Fill((*di).sizeY());
          meClChargeNotOnTrack_diskp3->Fill((*di).charge()/1000);
        }
          }
          else{
        if(DBdisk==1) {
          meClPosDisk1mzNotOnTrack->Fill(x,y);
          meClSizeNotOnTrack_diskm1->Fill((*di).size());
          meClSizeXNotOnTrack_diskm1->Fill((*di).sizeX());
          meClSizeYNotOnTrack_diskm1->Fill((*di).sizeY());
          meClChargeNotOnTrack_diskm1->Fill((*di).charge()/1000);
        }
        if(DBdisk==2) {
          meClPosDisk2mzNotOnTrack->Fill(x,y); 
          meClSizeNotOnTrack_diskm2->Fill((*di).size());
          meClSizeXNotOnTrack_diskm2->Fill((*di).sizeX());
          meClSizeYNotOnTrack_diskm2->Fill((*di).sizeY());
          meClChargeNotOnTrack_diskm2->Fill((*di).charge()/1000);
        }
        if(DBdisk==3 && isUpgrade) {
          meClPosDisk3mzNotOnTrack->Fill(x,y);
                  meClSizeNotOnTrack_diskm3->Fill((*di).size());
          meClSizeXNotOnTrack_diskm3->Fill((*di).sizeX());
          meClSizeYNotOnTrack_diskm3->Fill((*di).sizeY());
          meClChargeNotOnTrack_diskm3->Fill((*di).charge()/1000);
        }
          } 

        }
      }// end "if cluster off track"
      else {
        nofclOnTrack++; 
        if(z == 0 && DBdisk != 10){
          //find cluster global position (rphi, z) get cluster
          //define tracker and pixel geometry and topology
          const TrackerGeometry& theTracker(*theTrackerGeometry);
          const PixelGeomDetUnit* theGeomDet = static_cast<const PixelGeomDetUnit*> (theTracker.idToDet(detId) );
          //test if PixelGeomDetUnit exists
          if(theGeomDet == 0) {
        if(debug_) std::cout << "NO THEGEOMDET\n";
        continue;
          }
          const PixelTopology * topol = &(theGeomDet->specificTopology());
          //center of gravity (of charge)
          float xcenter = di->x();
          float ycenter = di->y();
          // get the cluster position in local coordinates (cm) 
          LocalPoint clustlp = topol->localPosition( MeasurementPoint(xcenter, ycenter) );
          // get the cluster position in global coordinates (cm)
          GlobalPoint clustgp = theGeomDet->surface().toGlobal( clustlp );  
          z = clustgp.z();
        }
      }
    }
      }
      //++ fill the number of clusters on a module
      std::map<uint32_t, SiPixelTrackResidualModule*>::iterator pxd = theSiPixelStructure.find((*it)->geographicalId().rawId());
      if (pxd!=theSiPixelStructure.end()) (*pxd).second->nfill(nofclOnTrack, nofclOffTrack, reducedSet, modOn, ladOn, layOn, phiOn, bladeOn, diskOn, ringOn); 
      if(nofclOnTrack!=0) meNClustersOnTrack_all->Fill(nofclOnTrack); 
      if(nofclOffTrack!=0) meNClustersNotOnTrack_all->Fill(nofclOffTrack); 
      //barrel
      if(DetId(detId).subdetId() == 1){
    if(nofclOnTrack!=0) meNClustersOnTrack_bpix->Fill(nofclOnTrack); 
    if(nofclOffTrack!=0) meNClustersNotOnTrack_bpix->Fill(nofclOffTrack); 
    //DBlayer = PixelBarrelName(DetId(detId)).layerName();
    switch(DBlayer){
    case 1: { 
      if(nofclOnTrack!=0) meNClustersOnTrack_layer1->Fill(nofclOnTrack);
      if(nofclOffTrack!=0) meNClustersNotOnTrack_layer1->Fill(nofclOffTrack); break;
    }
    case 2: {
      if(nofclOnTrack!=0) meNClustersOnTrack_layer2->Fill(nofclOnTrack);
      if(nofclOffTrack!=0) meNClustersNotOnTrack_layer2->Fill(nofclOffTrack); break; 
    }
    case 3: {
      if(nofclOnTrack!=0) meNClustersOnTrack_layer3->Fill(nofclOnTrack); 
      if(nofclOffTrack!=0) meNClustersNotOnTrack_layer3->Fill(nofclOffTrack); break; 
    }
    case 4: {
      if(nofclOnTrack!=0 && isUpgrade) meNClustersOnTrack_layer4->Fill(nofclOnTrack); 
      if(nofclOffTrack!=0 && isUpgrade) meNClustersNotOnTrack_layer4->Fill(nofclOffTrack); break; 
    }
    }
      }//end barrel
      //endcap
      if(DetId(detId).subdetId() == 2) {
    //DBdisk = PixelEndcapName(DetId(detId )).diskName();
    //z = clustgp.z();
    if(nofclOnTrack!=0) meNClustersOnTrack_fpix->Fill(nofclOnTrack); 
    if(nofclOffTrack!=0) meNClustersNotOnTrack_fpix->Fill(nofclOffTrack);
    if(z>0){
      if(DBdisk==1) {
        if(nofclOnTrack!=0) meNClustersOnTrack_diskp1->Fill(nofclOnTrack); 
        if(nofclOffTrack!=0) meNClustersNotOnTrack_diskp1->Fill(nofclOffTrack);
      }
      if(DBdisk==2) {
        if(nofclOnTrack!=0) meNClustersOnTrack_diskp2->Fill(nofclOnTrack); 
        if(nofclOffTrack!=0) meNClustersNotOnTrack_diskp2->Fill(nofclOffTrack);
      }
          if(DBdisk==3) {
        if(nofclOnTrack!=0 && isUpgrade) meNClustersOnTrack_diskp3->Fill(nofclOnTrack); 
        if(nofclOffTrack!=0) meNClustersNotOnTrack_diskp3->Fill(nofclOffTrack);
      }
    }
    if(z<0){
      if(DBdisk==1) {
        if(nofclOnTrack!=0) meNClustersOnTrack_diskm1->Fill(nofclOnTrack); 
        if(nofclOffTrack!=0) meNClustersNotOnTrack_diskm1->Fill(nofclOffTrack);
      }
      if(DBdisk==2) {
        if(nofclOnTrack!=0) meNClustersOnTrack_diskm2->Fill(nofclOnTrack); 
        if(nofclOffTrack!=0) meNClustersNotOnTrack_diskm2->Fill(nofclOffTrack);
      }
          if(DBdisk==3) {
        if(nofclOnTrack!=0 && isUpgrade) meNClustersOnTrack_diskm3->Fill(nofclOnTrack); 
        if(nofclOffTrack!=0 && isUpgrade) meNClustersNotOnTrack_diskm3->Fill(nofclOffTrack);
      }
    }
      }

    }//end if it's a Pixel module
  }//end for loop over tracker detector geometry modules


  if(trackclusters>0) (meNofClustersOnTrack_)->Fill(0,trackclusters);
  if(barreltrackclusters>0)(meNofClustersOnTrack_)->Fill(1,barreltrackclusters);
  if(endcaptrackclusters>0)(meNofClustersOnTrack_)->Fill(2,endcaptrackclusters);
  if(otherclusters>0)(meNofClustersNotOnTrack_)->Fill(0,otherclusters);
  if(barrelotherclusters>0)(meNofClustersNotOnTrack_)->Fill(1,barrelotherclusters);
  if(endcapotherclusters>0)(meNofClustersNotOnTrack_)->Fill(2,endcapotherclusters);
  if(tracks>0)(meNofTracks_)->Fill(0,tracks);
  if(pixeltracks>0)(meNofTracks_)->Fill(1,pixeltracks);
  if(bpixtracks>0)(meNofTracks_)->Fill(2,bpixtracks);
  if(fpixtracks>0)(meNofTracks_)->Fill(3,fpixtracks);
}
void SiPixelTrackResidualSource::triplets(double x1,double y1,double z1,double x2,double y2,double z2,double x3,double y3,double z3,
                      double ptsig, double & dca2,double & dz2, double kap) {
  
  //Define some constants
  using namespace std;

  //Curvature kap from global Track

 //inverse of the curvature is the radius in the transverse plane
  double rho = 1/kap;
  //Check that the hits are in the correct layers
  double r1 = sqrt( x1*x1 + y1*y1 );
  double r3 = sqrt( x3*x3 + y3*y3 );

  if( r3-r1 < 2.0 ) cout << "warn r1 = " << r1 << ", r3 = " << r3 << endl;
  
  // Calculate the centre of the helix in xy-projection with radius rho from the track.
  //start with a line (sekante) connecting the two points (x1,y1) and (x3,y3) vec_L = vec_x3-vec_x1
  //with L being the length of that vector.
  double L=sqrt((x3-x1)*(x3-x1)+(y3-y1)*(y3-y1));
  //lam is the line from the middel point of vec_q towards the center of the circle X0,Y0
  // we already have kap and rho = 1/kap
  double lam = sqrt(rho*rho - L*L/4);
  
  // There are two solutions, the sign of kap gives the information
  // which of them is correct.
  //
  if( kap > 0 ) lam = -lam;

  //
  // ( X0, Y0 ) is the centre of the circle that describes the helix in xy-projection.
  //
  double x0 =  0.5*( x1 + x3 ) + lam/L * ( -y1 + y3 );
  double y0 =  0.5*( y1 + y3 ) + lam/L * (  x1 - x3 );

  // Calculate the dipangle in z direction (needed later for z residual) :
  //Starting from the heliz equation whihc has to hold for both points z1,z3
  double num = ( y3 - y0 ) * ( x1 - x0 ) - ( x3 - x0 ) * ( y1 - y0 );
  double den = ( x1 - x0 ) * ( x3 - x0 ) + ( y1 - y0 ) * ( y3 - y0 );
  double tandip = kap * ( z3 - z1 ) / atan( num / den );

 
  // angle from first hit to dca point:
  //
  double dphi = atan( ( ( x1 - x0 ) * y0 - ( y1 - y0 ) * x0 )
                      / ( ( x1 - x0 ) * x0 + ( y1 - y0 ) * y0 ) );
  //z position of the track based on the middle of the circle
  //track equation for the z component
  double uz0 = z1 + tandip * dphi * rho;

  //RESIDUAL IN R-PHI
  //Calculate distance dca2 from point (x2,y2) to the circle which is given by
  //the distance of the point to the middlepoint dcM = sqrt((x0-x2)^2+(y0-y2)) and rho
  //dca = rho +- dcM
  if(kap>0) dca2=rho-sqrt((x0-x2)*(x0-x2)+(y0-y2)*(y0-y2));
  else dca2=rho+sqrt((-x0+x2)*(-x0+x2)+(-y0+y2)*(-y0+y2));

  //RESIDUAL IN Z
  double xx =0 ;
  double yy =0 ;
  //sign of kappa determines the calculation
  //xx and yy are the new coordinates starting from x2, y2 that are on the track itself
  //vec_X2+-dca2*vec(X0-X2)/|(X0-X2)|
  if(kap<0){
    xx =   x2+(dca2*((x0-x2))/sqrt((x0-x2)*(x0-x2)+(y0-y2)*(y0-y2)));
    yy = y2+(dca2*((y0-y2))/sqrt((x0-x2)*(x0-x2)+(y0-y2)*(y0-y2)));
  }
  else if(kap>=0){
    xx =   x2-(dca2*((x0-x2))/sqrt((x0-x2)*(x0-x2)+(y0-y2)*(y0-y2)));
    yy = y2-(dca2*((y0-y2))/sqrt((x0-x2)*(x0-x2)+(y0-y2)*(y0-y2)));
  }

  //to get residual in z start with calculating the new uz2 position if one has moved to xx, yy
  //on the track. First calculate the change in phi2 with respect to the center X0, Y0
  double dphi2 = atan( ( ( xx - x0 ) * y0 - ( yy - y0 ) * x0 )
               / ( ( xx - x0 ) * x0 + ( yy - y0 ) * y0 ) );
  //Solve track equation for this new z depending on the dip angle of the track (see above
  //calculated based on X1, X3 and X0, use uz0 as reference point again.
  double  uz2= uz0 - dphi2*tandip*rho;
  
  //subtract new z position from the old one
  dz2=z2-uz2;
  
  //if we are interested in the arclength this is unsigned though
  //  double cosphi2 = (x2*xx+y2*yy)/(sqrt(x2*x2+y2*y2)*sqrt(xx*xx+yy*yy));
  //double arcdca2=sqrt(x2*x2+y2*y2)*acos(cosphi2);
  
}


DEFINE_FWK_MODULE(SiPixelTrackResidualSource); // define this as a plug-in