#include <TrackingPFG/PileUp/src/MCVerticesAnalyzer.cc>

Inheritance diagram for MCVerticesAnalyzer:

Public Member Functions
	MCVerticesAnalyzer (const edm::ParameterSet &)
	~MCVerticesAnalyzer ()
Private Member Functions
virtual void	analyze (const edm::Event &, const edm::EventSetup &)
virtual void	beginJob ()
virtual void	beginRun (const edm::Run &, const edm::EventSetup &)
virtual void	endJob ()
virtual void	endRun (const edm::Run &, const edm::EventSetup &)
Private Attributes
TH1F *	m_hlumi
TH1F *	m_hmainvtxx
TH1F *	m_hmainvtxy
TH1F *	m_hmainvtxz
TH1F *	m_hnvtx
TH2F *	m_hnvtxvslumi
TH1F *	m_hnvtxweight
TProfile *	m_hnvtxweightprof
TH1F *	m_hpileupvtxz
edm::InputTag	m_mctruthcollection
edm::InputTag	m_pileupcollection
const bool	m_useweight
edm::InputTag	m_weight

Detailed Description

Description: <one line="" class="" summary>="">

Implementation: <Notes on="" implementation>="">

Definition at line 58 of file MCVerticesAnalyzer.cc.

Constructor & Destructor Documentation

MCVerticesAnalyzer::MCVerticesAnalyzer ( const edm::ParameterSet & iConfig ) [explicit]

Definition at line 102 of file MCVerticesAnalyzer.cc.

References m_hlumi, m_hmainvtxx, m_hmainvtxy, m_hmainvtxz, m_hnvtx, m_hnvtxvslumi, m_hnvtxweight, m_hnvtxweightprof, m_hpileupvtxz, and m_useweight.

                                                                    :
  m_pileupcollection(iConfig.getParameter<edm::InputTag>("pileupSummaryCollection")),
  m_mctruthcollection(iConfig.getParameter<edm::InputTag>("mcTruthCollection")),
  m_useweight(iConfig.getParameter<bool>("useWeight")),
  m_weight(iConfig.getParameter<edm::InputTag>("weightProduct"))


{
   //now do what ever initialization is needed



  edm::Service<TFileService> tfserv;

  m_hnvtx = tfserv->make<TH1F>("nvtx","Number of pileup vertices",60,-0.5,59.5);
  m_hnvtx->GetXaxis()->SetTitle("Number of Interactions");

  m_hlumi = tfserv->make<TH1F>("lumi","BX luminosity*xsect",200,0.,50.);
  m_hlumi->GetXaxis()->SetTitle("Average Number of Interactions");

  m_hnvtxvslumi = tfserv->make<TH2F>("nvtxvslumi","Npileup vs BX luminosity*xsect",200,0.,50.,60,-0.5,59.5);
  m_hnvtxvslumi->GetXaxis()->SetTitle("Average Number of Interactions");  m_hnvtxvslumi->GetYaxis()->SetTitle("Number of Interactions");

  if(m_useweight) {
    m_hnvtxweight = tfserv->make<TH1F>("nvtxweight","Number of pileup vertices (1-w)",60,-0.5,59.5);
    m_hnvtxweight->GetXaxis()->SetTitle("Number of Interactions");
    m_hnvtxweightprof = tfserv->make<TProfile>("nvtxweightprof","Mean (1-w) vs Number of pileup interactions",60,-0.5,59.5);
    m_hnvtxweightprof->GetXaxis()->SetTitle("Number of Interactions");
  }

  m_hmainvtxx = tfserv->make<TH1F>("mainvtxx","Main vertex x position",200,-.5,.5);
  m_hmainvtxx->GetXaxis()->SetTitle("X (cm)");
  m_hmainvtxy = tfserv->make<TH1F>("mainvtxy","Main vertex y position",200,-.5,.5);
  m_hmainvtxy->GetXaxis()->SetTitle("Y (cm)");
  m_hmainvtxz = tfserv->make<TH1F>("mainvtxz","Main vertex z position",600,-30.,30.);
  m_hmainvtxz->GetXaxis()->SetTitle("Z (cm)");
  m_hpileupvtxz = tfserv->make<TH1F>("pileupvtxz","PileUp vertices z position",600,-30.,30.);
  m_hpileupvtxz->GetXaxis()->SetTitle("Z (cm)");

}

MCVerticesAnalyzer::~MCVerticesAnalyzer ( )

Definition at line 144 of file MCVerticesAnalyzer.cc.

{

   // do anything here that needs to be done at desctruction time
   // (e.g. close files, deallocate resources etc.)

}

Member Function Documentation

void MCVerticesAnalyzer::analyze	(	const edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)		`[private, virtual]`

Implements edm::EDAnalyzer.

Definition at line 159 of file MCVerticesAnalyzer.cc.

References edm::Event::getByLabel(), m_hlumi, m_hmainvtxx, m_hmainvtxy, m_hmainvtxz, m_hnvtx, m_hnvtxvslumi, m_hnvtxweight, m_hnvtxweightprof, m_hpileupvtxz, m_mctruthcollection, m_pileupcollection, m_useweight, m_weight, and histoStyle::weight.

{
   using namespace edm;

   double weight = 1.;

   if(m_useweight) {
     Handle<double> weightprod;
     iEvent.getByLabel(m_weight,weightprod);

     weight = *weightprod;

   }


   Handle<std::vector<PileupSummaryInfo> >  pileupinfos;
   iEvent.getByLabel(m_pileupcollection,pileupinfos);

   //

   if(pileupinfos.isValid()) {

  // look for the intime PileupSummaryInfo

     std::vector<PileupSummaryInfo>::const_iterator pileupinfo;
     for(pileupinfo = pileupinfos->begin(); pileupinfo != pileupinfos->end() ; ++pileupinfo) {
       if(pileupinfo->getBunchCrossing()==0) break;
     } 
 
     //

     if(pileupinfo->getBunchCrossing()!=0) {
       edm::LogError("NoInTimePileUpInfo") << "Cannot find the in-time pileup info " << pileupinfo->getBunchCrossing();
     }
     else {

       m_hlumi->Fill(pileupinfo->getTrueNumInteractions(),weight);
       m_hnvtx->Fill(pileupinfo->getPU_NumInteractions(),weight);
       m_hnvtxvslumi->Fill(pileupinfo->getTrueNumInteractions(),pileupinfo->getPU_NumInteractions(),weight);

       if(m_useweight) {
         m_hnvtxweight->Fill(pileupinfo->getPU_NumInteractions(),1.-weight);
         m_hnvtxweightprof->Fill(pileupinfo->getPU_NumInteractions(),1.-weight);
       }
       
       const std::vector<float>& zpositions = pileupinfo->getPU_zpositions();
       
       for(std::vector<float>::const_iterator zpos = zpositions.begin() ; zpos != zpositions.end() ; ++zpos) {
         
         m_hpileupvtxz->Fill(*zpos,weight);
         
       }
     }
   }
   // main interaction part

   Handle< HepMCProduct > EvtHandle ;
   iEvent.getByLabel(m_mctruthcollection, EvtHandle ) ;

   if(EvtHandle.isValid()) {

     const HepMC::GenEvent* Evt = EvtHandle->GetEvent();

   // get the first vertex
     
     if(Evt->vertices_begin() != Evt->vertices_end()) {

       m_hmainvtxx->Fill((*Evt->vertices_begin())->point3d().x()/10.,weight);
       m_hmainvtxy->Fill((*Evt->vertices_begin())->point3d().y()/10.,weight);
       m_hmainvtxz->Fill((*Evt->vertices_begin())->point3d().z()/10.,weight);

     }
   }
}