[u/mrichter/AliRoot.git] / TRD / qaRec / AliTRDcheckESD.cxx

/**************************************************************************
* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
*                                                                        *
* Author: The ALICE Off-line Project.                                    *
* Contributors are mentioned in the code where appropriate.              *
*                                                                        *
* Permission to use, copy, modify and distribute this software and its   *
* documentation strictly for non-commercial purposes is hereby granted   *
* without fee, provided that the above copyright notice appears in all   *
* copies and that both the copyright notice and this permission notice   *
* appear in the supporting documentation. The authors make no claims     *
* about the suitability of this software for any purpose. It is          *
* provided "as is" without express or implied warranty.                  *
**************************************************************************/


#include <TClonesArray.h>
#include <TObjArray.h>
#include <TObject.h>
#include <TH2I.h>
#include <TGraphErrors.h>
#include <TFile.h>
#include <TTree.h>
#include <TROOT.h>
#include <TChain.h>
#include <TParticle.h>

#include "AliLog.h"
#include "AliAnalysisManager.h"
#include "AliESDEvent.h"
#include "AliESDkink.h"
#include "AliMCEvent.h"
#include "AliESDInputHandler.h"
#include "AliMCEventHandler.h"

#include "AliESDtrack.h"
#include "AliMCParticle.h"
#include "AliPID.h"
#include "AliStack.h"
#include "AliTrackReference.h"

#include "AliTRDcheckESD.h"

ClassImp(AliTRDcheckESD)

const Int_t   AliTRDcheckESD::fgkNgraphs = 4;
const Float_t AliTRDcheckESD::fgkxTPC = 290.;
const Float_t AliTRDcheckESD::fgkxTOF = 365.;

//____________________________________________________________________
AliTRDcheckESD::AliTRDcheckESD():
  AliAnalysisTask("ESDchecker", "TRD checker @ ESD level")
  ,fStatus(0)
  ,fESD(0x0)
  ,fMC(0x0)
  ,fHistos(0x0)
{
  //
  // Default constructor
  //
  SetMC(kTRUE);
  DefineInput(0, TChain::Class());
  DefineOutput(0, TObjArray::Class());
}

//____________________________________________________________________
AliTRDcheckESD::~AliTRDcheckESD()
{
  if(fHistos){
    //fHistos->Delete();
    delete fHistos;
  }
}

//____________________________________________________________________
void AliTRDcheckESD::ConnectInputData(Option_t *)
{
  //
  // Link the Input Data
  //
  TTree *tree = dynamic_cast<TChain*>(GetInputData(0));
  if(tree) tree->SetBranchStatus("Tracks", 1);

  AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*>(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());
  fESD = esdH ? esdH->GetEvent() : 0x0;

  if(!HasMC()) return;
  AliMCEventHandler *mcH = dynamic_cast<AliMCEventHandler*>(AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
  fMC = mcH ? mcH->MCEvent() : 0x0;
}

//____________________________________________________________________
void AliTRDcheckESD::CreateOutputObjects()
{	
  //
  // Create Output Containers (TObjectArray containing 1D histograms)
  //
  OpenFile(0, "RECREATE");  
  Histos();
}

//____________________________________________________________________
TGraphErrors* AliTRDcheckESD::GetGraph(Int_t id, Option_t*)
{
  Bool_t kBUILD = 1, // build graph if none found
         kCLEAR = 1; // clear existing graph

  const Char_t *name[] = {
    "Geo", "Trk", "Pid", "Ref"
  };
  const Char_t *title[] = {
    "TRD geometrical efficiency (TRDin/TPCout)"
    ,"TRD tracking efficiency (TRDout/TRDin)"
    ,"TRD PID efficiency (TRDpid/TRDin)"
    ,"TRD refit efficiency (TRDrefit/TRDin)"
  };
  const Int_t ngr = sizeof(name)/sizeof(Char_t*);
  if(ngr != fgkNgraphs){
    AliWarning("No of graphs defined different from definition");
    return 0x0;
  }

  TObjArray *res = 0x0;
  if(!(res = (TObjArray*)fHistos->At(kResults)) ||
      (id < 0 || id >= ngr)){
    AliWarning("Graph missing.");
    return 0x0;
  }

  TGraphErrors *g = 0x0;
  if((g = dynamic_cast<TGraphErrors*>(res->At(id)))){
    if(kCLEAR) for(Int_t ip=g->GetN(); ip--;) g->RemovePoint(ip);
  } else {
    if(kBUILD){
      g = new TGraphErrors();
      g->SetNameTitle(name[id], title[id]);
      res->AddAt(g, id);
    }
  }
  return g;
}

//____________________________________________________________________
void AliTRDcheckESD::Exec(Option_t *){
  //
  // Run the Analysis
  //
  if(!fESD){
    AliError("ESD event missing.");
    return;
  }

  // Get MC information if available
  AliStack * fStack = 0x0;
  if(HasMC() && !fMC){ 
    AliWarning("MC event missing");
    SetMC(kFALSE);
  } else {
    if(!(fStack = fMC->Stack())){
      AliWarning("MC stack missing");
      SetMC(kFALSE);
    }
  }
  Bool_t TRDin(0), TRDout(0), TRDpid(0);

  AliESDtrack *esdTrack = 0x0;
  for(Int_t itrk = 0; itrk < fESD->GetNumberOfTracks(); itrk++){
    TRDin=0;TRDout=0;TRDpid=0;
    esdTrack = fESD->GetTrack(itrk);

//     if(esdTrack->GetNcls(1)) nTPC++;
//     if(esdTrack->GetNcls(2)) nTRD++;

    // track status
    ULong_t status = esdTrack->GetStatus();

    // define TPC out tracks
    if(!Bool_t(status & AliESDtrack::kTPCout)) continue;
    if(esdTrack->GetKinkIndex(0) > 0) continue;

    // TRD PID
    Double_t p[AliPID::kSPECIES]; esdTrack->GetTRDpid(p);
    // pid quality
    esdTrack->GetTRDpidQuality();

    // look at external track param
    const AliExternalTrackParam *op = esdTrack->GetOuterParam();
    Double_t xyz[3];
    if(op){
      op->GetXYZ(xyz);
      op->Global2LocalPosition(xyz, op->GetAlpha());
      //printf("op @ X[%7.3f]\n", xyz[0]);
    }

    // read MC info
    if(!HasMC()) continue;

    Int_t fLabel = esdTrack->GetLabel();
    if(TMath::Abs(fLabel) > fStack->GetNtrack()) continue; 
    
    // read MC particle
    AliMCParticle *mcParticle = 0x0; 
    if(!(mcParticle = fMC->GetTrack(TMath::Abs(fLabel)))){
      AliWarning(Form("MC particle missing. Label[ %d].", fLabel));
      continue;
    }

    AliTrackReference *ref = 0x0; 
    Int_t nRefs = mcParticle->GetNumberOfTrackReferences();
    if(!nRefs){
      AliWarning(Form("Track refs missing. Label[%d].", fLabel));
      continue;
    }
    Int_t iref = 0;
    while(iref<nRefs){
      ref = mcParticle->GetTrackReference(iref);
      if(ref->LocalX() > fgkxTPC) break;
      ref=0x0; iref++;
    }

    // read TParticle
    //TParticle *tParticle = mcParticle->Particle(); 
    //Int_t fPdg = tParticle->GetPdgCode();
    // reject secondaries
    //if(!tParticle->IsPrimary()) continue;

    if(ref){ 
      if(ref->LocalX() > fgkxTOF){ // track skipping TRD fiducial volume
        ref = mcParticle->GetTrackReference(TMath::Max(iref-1, 0));
      } else {
        TRDin=1;
        if(esdTrack->GetNcls(2)) TRDout=1;
        if(esdTrack->GetTRDpidQuality()>=4) TRDpid=1;
      }
    } else { // track stopped in TPC 
      ref = mcParticle->GetTrackReference(TMath::Max(iref-1, 0));
    }
    // get the MC pt !!
    Float_t pt = ref->Pt();

    TH2 *h = (TH2I*)fHistos->At(kTRDstat);
    if(status & AliESDtrack::kTPCout) h->Fill(pt, kTPCout);
    if(/*status & AliESDtrack::k*/TRDin) h->Fill(pt, kTRDin);
    if(/*status & AliESDtrack::k*/TRDout){ 
      ((TH1*)fHistos->At(kNCl))->Fill(esdTrack->GetNcls(2));
      h->Fill(pt, kTRDout);
    }
    if(/*status & AliESDtrack::k*/TRDpid) h->Fill(pt, kTRDpid);
    if(status & AliESDtrack::kTRDrefit) h->Fill(pt, kTRDref);
  }  
  PostData(0, fHistos);
}

//____________________________________________________________________
TObjArray* AliTRDcheckESD::Histos()
{
  if(fHistos) return fHistos;

  fHistos = new TObjArray(kNhistos);
  //fHistos->SetOwner(kTRUE);
  
  TH1 *h = 0x0;

  // clusters per tracklet
  if(!(h = (TH1I*)gROOT->FindObject("hNCl"))){
    h = new TH1I("hNCl", "Clusters per TRD track", 100, 0., 200.);
    h->GetXaxis()->SetTitle("N_{cl}^{TRD}");
    h->GetYaxis()->SetTitle("entries");
  } else h->Reset();
  fHistos->AddAt(h, kNCl);

  // status bits histogram
  if(!(h = (TH2I*)gROOT->FindObject("hTRDstat"))){
    h = new TH2I("hTRDstat", "TRD status bits", 100, 0., 20., kNbits, .5, kNbits+.5);
    h->GetXaxis()->SetTitle("p_{T} [GeV/c]");
    h->GetYaxis()->SetTitle("status bits");
    h->GetZaxis()->SetTitle("entries");
  } else h->Reset();
  fHistos->AddAt(h, kTRDstat);

  // results array
  TObjArray *res = new TObjArray();
  res->SetName("Results");
  fHistos->AddAt(res, kResults);
  return fHistos;
}

//____________________________________________________________________
Bool_t AliTRDcheckESD::Load(const Char_t *filename, const Char_t *name)
{
  if(!TFile::Open(filename)){
    AliWarning(Form("Couldn't open file %s.", filename));
    return kFALSE;
  }
  TObjArray *o = 0x0;
  if(!(o = (TObjArray*)gFile->Get(name ? name : GetName()))){
    AliWarning("Missing histogram container.");
    return kFALSE;
  }
  fHistos = (TObjArray*)o->Clone(GetName());
  gFile->Close();
  return kTRUE;
}

//____________________________________________________________________
void AliTRDcheckESD::Terminate(Option_t *)
{
  TObjArray *res = 0x0;
  if(!(res = (TObjArray*)fHistos->At(kResults))){
    AliWarning("Graph container missing.");
    return;
  }
  if(!res->GetEntriesFast()) res->Expand(fgkNgraphs);
  
  // geometrical efficiency
  TH2I *h2 = (TH2I*)fHistos->At(kTRDstat);
  TH1 *h1[2] = {0x0, 0x0};
  h1[0] = h2->ProjectionX("px0", kTPCout, kTPCout);
  h1[1] = h2->ProjectionX("px1", kTRDin, kTRDin);
  Process(h1, GetGraph(0));

  // tracking efficiency
  h1[0] = h2->ProjectionX("px0", kTRDin, kTRDin);
  h1[1] = h2->ProjectionX("px1", kTRDout, kTRDout);
  Process(h1, GetGraph(1));

  // PID efficiency
  //h1[0] = h2->ProjectionX("px0", kTRDin, kTRDin);
  h1[1] = h2->ProjectionX("px1", kTRDpid, kTRDpid);
  Process(h1, GetGraph(2));

  // Refit efficiency
  //h1[0] = h2->ProjectionX("px0", kTRDin, kTRDin);
  h1[1] = h2->ProjectionX("px1", kTRDref, kTRDref);
  Process(h1, GetGraph(3));
}

//____________________________________________________________________
void AliTRDcheckESD::Process(TH1 **h1, TGraphErrors *g)
{
  Int_t n1 = 0, n2 = 0, ip=0;
  Double_t eff = 0.;

  TAxis *ax = h1[0]->GetXaxis();
  for(Int_t ib=1; ib<=ax->GetNbins(); ib++){
    if(!(n1 = (Int_t)h1[0]->GetBinContent(ib))) continue;
    n2 = (Int_t)h1[1]->GetBinContent(ib);
    eff = n2/Float_t(n1);

    ip=g->GetN();
    g->SetPoint(ip, ax->GetBinCenter(ib), eff);
    g->SetPointError(ip, 0., n2 ? eff*TMath::Sqrt(1./n1+1./n2) : 0.);
  }
}
Commit	Line	Data
9a281e83	1	/**************************************************************************
	2	* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	7	* Permission to use, copy, modify and distribute this software and its *
	8	* documentation strictly for non-commercial purposes is hereby granted *
	9	* without fee, provided that the above copyright notice appears in all *
	10	* copies and that both the copyright notice and this permission notice *
	11	* appear in the supporting documentation. The authors make no claims *
	12	* about the suitability of this software for any purpose. It is *
	13	* provided "as is" without express or implied warranty. *
	14	**************************************************************************/
	15
	16
	17	#include <TClonesArray.h>
	18	#include <TObjArray.h>
	19	#include <TObject.h>
	20	#include <TH2I.h>
48797466	21	#include <TGraphErrors.h>
9a281e83	22	#include <TFile.h>
	23	#include <TTree.h>
	24	#include <TROOT.h>
	25	#include <TChain.h>
	26	#include <TParticle.h>
	27
	28	#include "AliLog.h"
	29	#include "AliAnalysisManager.h"
	30	#include "AliESDEvent.h"
d12237d6	31	#include "AliESDkink.h"
9a281e83	32	#include "AliMCEvent.h"
	33	#include "AliESDInputHandler.h"
	34	#include "AliMCEventHandler.h"
	35
	36	#include "AliESDtrack.h"
	37	#include "AliMCParticle.h"
	38	#include "AliPID.h"
	39	#include "AliStack.h"
	40	#include "AliTrackReference.h"
9a281e83	41
	42	#include "AliTRDcheckESD.h"
	43
	44	ClassImp(AliTRDcheckESD)
	45
965e895b	46	const Int_t AliTRDcheckESD::fgkNgraphs = 4;
	47	const Float_t AliTRDcheckESD::fgkxTPC = 290.;
	48	const Float_t AliTRDcheckESD::fgkxTOF = 365.;
9a281e83	49
	50	//____________________________________________________________________
	51	AliTRDcheckESD::AliTRDcheckESD():
	52	AliAnalysisTask("ESDchecker", "TRD checker @ ESD level")
	53	,fStatus(0)
	54	,fESD(0x0)
	55	,fMC(0x0)
	56	,fHistos(0x0)
	57	{
	58	//
	59	// Default constructor
	60	//
49c7f0a5	61	SetMC(kTRUE);
9a281e83	62	DefineInput(0, TChain::Class());
	63	DefineOutput(0, TObjArray::Class());
	64	}
	65
	66	//____________________________________________________________________
	67	AliTRDcheckESD::~AliTRDcheckESD()
	68	{
	69	if(fHistos){
	70	//fHistos->Delete();
	71	delete fHistos;
	72	}
	73	}
	74
	75	//____________________________________________________________________
	76	void AliTRDcheckESD::ConnectInputData(Option_t *)
	77	{
	78	//
	79	// Link the Input Data
	80	//
	81	TTree tree = dynamic_cast<TChain>(GetInputData(0));
	82	if(tree) tree->SetBranchStatus("Tracks", 1);
	83
	84	AliESDInputHandler esdH = dynamic_cast<AliESDInputHandler>(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());
	85	fESD = esdH ? esdH->GetEvent() : 0x0;
	86
	87	if(!HasMC()) return;
	88	AliMCEventHandler mcH = dynamic_cast<AliMCEventHandler>(AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
	89	fMC = mcH ? mcH->MCEvent() : 0x0;
	90	}
	91
	92	//____________________________________________________________________
	93	void AliTRDcheckESD::CreateOutputObjects()
	94	{
	95	//
	96	// Create Output Containers (TObjectArray containing 1D histograms)
	97	//
	98	OpenFile(0, "RECREATE");
c2fd5953	99	Histos();
9a281e83	100	}
9a281e83	101
965e895b	102	//____________________________________________________________________
	103	TGraphErrors* AliTRDcheckESD::GetGraph(Int_t id, Option_t*)
	104	{
	105	Bool_t kBUILD = 1, // build graph if none found
	106	kCLEAR = 1; // clear existing graph
	107
	108	const Char_t *name[] = {
	109	"Geo", "Trk", "Pid", "Ref"
	110	};
	111	const Char_t *title[] = {
	112	"TRD geometrical efficiency (TRDin/TPCout)"
	113	,"TRD tracking efficiency (TRDout/TRDin)"
	114	,"TRD PID efficiency (TRDpid/TRDin)"
	115	,"TRD refit efficiency (TRDrefit/TRDin)"
	116	};
	117	const Int_t ngr = sizeof(name)/sizeof(Char_t*);
	118	if(ngr != fgkNgraphs){
	119	AliWarning("No of graphs defined different from definition");
	120	return 0x0;
	121	}
	122
	123	TObjArray *res = 0x0;
	124	if(!(res = (TObjArray*)fHistos->At(kResults)) \|\|
	125	(id < 0 \|\| id >= ngr)){
	126	AliWarning("Graph missing.");
	127	return 0x0;
	128	}
	129
	130	TGraphErrors *g = 0x0;
	131	if((g = dynamic_cast<TGraphErrors*>(res->At(id)))){
	132	if(kCLEAR) for(Int_t ip=g->GetN(); ip--;) g->RemovePoint(ip);
	133	} else {
	134	if(kBUILD){
	135	g = new TGraphErrors();
	136	g->SetNameTitle(name[id], title[id]);
	137	res->AddAt(g, id);
	138	}
	139	}
	140	return g;
	141	}
	142
9a281e83	143	//____________________________________________________________________
	144	void AliTRDcheckESD::Exec(Option_t *){
	145	//
	146	// Run the Analysis
	147	//
	148	if(!fESD){
48797466	149	AliError("ESD event missing.");
9a281e83	150	return;
	151	}
	152
	153	// Get MC information if available
	154	AliStack * fStack = 0x0;
	155	if(HasMC() && !fMC){
48797466	156	AliWarning("MC event missing");
9a281e83	157	SetMC(kFALSE);
	158	} else {
	159	if(!(fStack = fMC->Stack())){
48797466	160	AliWarning("MC stack missing");
9a281e83	161	SetMC(kFALSE);
	162	}
	163	}
d12237d6	164	Bool_t TRDin(0), TRDout(0), TRDpid(0);
9a281e83	165
9a281e83	166	AliESDtrack *esdTrack = 0x0;
9a281e83	167	for(Int_t itrk = 0; itrk < fESD->GetNumberOfTracks(); itrk++){
d12237d6	168	TRDin=0;TRDout=0;TRDpid=0;
9a281e83	169	esdTrack = fESD->GetTrack(itrk);
d12237d6	170
	171	// if(esdTrack->GetNcls(1)) nTPC++;
	172	// if(esdTrack->GetNcls(2)) nTRD++;
9a281e83	173
9a281e83	174	// track status
d12237d6	175	ULong_t status = esdTrack->GetStatus();
	176
	177	// define TPC out tracks
	178	if(!Bool_t(status & AliESDtrack::kTPCout)) continue;
	179	if(esdTrack->GetKinkIndex(0) > 0) continue;
9a281e83	180
	181	// TRD PID
	182	Double_t p[AliPID::kSPECIES]; esdTrack->GetTRDpid(p);
	183	// pid quality
	184	esdTrack->GetTRDpidQuality();
9a281e83	185
	186	// look at external track param
	187	const AliExternalTrackParam *op = esdTrack->GetOuterParam();
	188	Double_t xyz[3];
	189	if(op){
	190	op->GetXYZ(xyz);
	191	op->Global2LocalPosition(xyz, op->GetAlpha());
	192	//printf("op @ X[%7.3f]\n", xyz[0]);
	193	}
	194
	195	// read MC info
	196	if(!HasMC()) continue;
	197
	198	Int_t fLabel = esdTrack->GetLabel();
	199	if(TMath::Abs(fLabel) > fStack->GetNtrack()) continue;
	200
	201	// read MC particle
	202	AliMCParticle *mcParticle = 0x0;
	203	if(!(mcParticle = fMC->GetTrack(TMath::Abs(fLabel)))){
48797466	204	AliWarning(Form("MC particle missing. Label[ %d].", fLabel));
9a281e83	205	continue;
	206	}
	207
	208	AliTrackReference *ref = 0x0;
	209	Int_t nRefs = mcParticle->GetNumberOfTrackReferences();
48797466	210	if(!nRefs){
	211	AliWarning(Form("Track refs missing. Label[%d].", fLabel));
	212	continue;
	213	}
9a281e83	214	Int_t iref = 0;
	215	while(iref<nRefs){
	216	ref = mcParticle->GetTrackReference(iref);
965e895b	217	if(ref->LocalX() > fgkxTPC) break;
9a281e83	218	ref=0x0; iref++;
	219	}
	220
	221	// read TParticle
965e895b	222	//TParticle *tParticle = mcParticle->Particle();
48797466	223	//Int_t fPdg = tParticle->GetPdgCode();
d12237d6	224	// reject secondaries
d12237d6	225	//if(!tParticle->IsPrimary()) continue;
9a281e83	226
d12237d6	227	if(ref){
965e895b	228	if(ref->LocalX() > fgkxTOF){ // track skipping TRD fiducial volume
48797466	229	ref = mcParticle->GetTrackReference(TMath::Max(iref-1, 0));
9a281e83	230	} else {
d12237d6	231	TRDin=1;
d12237d6	232	if(esdTrack->GetNcls(2)) TRDout=1;
965e895b	233	if(esdTrack->GetTRDpidQuality()>=4) TRDpid=1;
9a281e83	234	}
d12237d6	235	} else { // track stopped in TPC
48797466	236	ref = mcParticle->GetTrackReference(TMath::Max(iref-1, 0));
48797466	237	}
d12237d6	238	// get the MC pt !!
9a281e83	239	Float_t pt = ref->Pt();
d12237d6	240
9a281e83	241	TH2 h = (TH2I)fHistos->At(kTRDstat);
d12237d6	242	if(status & AliESDtrack::kTPCout) h->Fill(pt, kTPCout);
d12237d6	243	if(/status & AliESDtrack::k/TRDin) h->Fill(pt, kTRDin);
9a281e83	244	if(/status & AliESDtrack::k/TRDout){
9a281e83	245	((TH1*)fHistos->At(kNCl))->Fill(esdTrack->GetNcls(2));
d12237d6	246	h->Fill(pt, kTRDout);
9a281e83	247	}
965e895b	248	if(/status & AliESDtrack::k/TRDpid) h->Fill(pt, kTRDpid);
965e895b	249	if(status & AliESDtrack::kTRDrefit) h->Fill(pt, kTRDref);
9a281e83	250	}
9a281e83	251	PostData(0, fHistos);
	252	}
	253
c2fd5953	254	//____________________________________________________________________
	255	TObjArray* AliTRDcheckESD::Histos()
	256	{
	257	if(fHistos) return fHistos;
	258
	259	fHistos = new TObjArray(kNhistos);
	260	//fHistos->SetOwner(kTRUE);
	261
	262	TH1 *h = 0x0;
	263
	264	// clusters per tracklet
	265	if(!(h = (TH1I*)gROOT->FindObject("hNCl"))){
	266	h = new TH1I("hNCl", "Clusters per TRD track", 100, 0., 200.);
	267	h->GetXaxis()->SetTitle("N_{cl}^{TRD}");
	268	h->GetYaxis()->SetTitle("entries");
	269	} else h->Reset();
	270	fHistos->AddAt(h, kNCl);
	271
	272	// status bits histogram
	273	if(!(h = (TH2I*)gROOT->FindObject("hTRDstat"))){
	274	h = new TH2I("hTRDstat", "TRD status bits", 100, 0., 20., kNbits, .5, kNbits+.5);
	275	h->GetXaxis()->SetTitle("p_{T} [GeV/c]");
	276	h->GetYaxis()->SetTitle("status bits");
	277	h->GetZaxis()->SetTitle("entries");
	278	} else h->Reset();
	279	fHistos->AddAt(h, kTRDstat);
	280
	281	// results array
	282	TObjArray *res = new TObjArray();
	283	res->SetName("Results");
	284	fHistos->AddAt(res, kResults);
	285	return fHistos;
	286	}
	287
965e895b	288	//____________________________________________________________________
	289	Bool_t AliTRDcheckESD::Load(const Char_t filename, const Char_t name)
	290	{
	291	if(!TFile::Open(filename)){
	292	AliWarning(Form("Couldn't open file %s.", filename));
	293	return kFALSE;
	294	}
	295	TObjArray *o = 0x0;
	296	if(!(o = (TObjArray*)gFile->Get(name ? name : GetName()))){
	297	AliWarning("Missing histogram container.");
	298	return kFALSE;
	299	}
	300	fHistos = (TObjArray*)o->Clone(GetName());
	301	gFile->Close();
	302	return kTRUE;
	303	}
9a281e83	304
	305	//____________________________________________________________________
	306	void AliTRDcheckESD::Terminate(Option_t *)
	307	{
965e895b	308	TObjArray *res = 0x0;
	309	if(!(res = (TObjArray*)fHistos->At(kResults))){
	310	AliWarning("Graph container missing.");
	311	return;
	312	}
	313	if(!res->GetEntriesFast()) res->Expand(fgkNgraphs);
48797466	314
48797466	315	// geometrical efficiency
965e895b	316	TH2I h2 = (TH2I)fHistos->At(kTRDstat);
965e895b	317	TH1 *h1[2] = {0x0, 0x0};
d12237d6	318	h1[0] = h2->ProjectionX("px0", kTPCout, kTPCout);
d12237d6	319	h1[1] = h2->ProjectionX("px1", kTRDin, kTRDin);
965e895b	320	Process(h1, GetGraph(0));
48797466	321
48797466	322	// tracking efficiency
d12237d6	323	h1[0] = h2->ProjectionX("px0", kTRDin, kTRDin);
d12237d6	324	h1[1] = h2->ProjectionX("px1", kTRDout, kTRDout);
965e895b	325	Process(h1, GetGraph(1));
48797466	326
48797466	327	// PID efficiency
965e895b	328	//h1[0] = h2->ProjectionX("px0", kTRDin, kTRDin);
d12237d6	329	h1[1] = h2->ProjectionX("px1", kTRDpid, kTRDpid);
965e895b	330	Process(h1, GetGraph(2));
	331
	332	// Refit efficiency
	333	//h1[0] = h2->ProjectionX("px0", kTRDin, kTRDin);
	334	h1[1] = h2->ProjectionX("px1", kTRDref, kTRDref);
	335	Process(h1, GetGraph(3));
	336	}
	337
	338	//____________________________________________________________________
	339	void AliTRDcheckESD::Process(TH1 *h1, TGraphErrors g)
	340	{
	341	Int_t n1 = 0, n2 = 0, ip=0;
	342	Double_t eff = 0.;
	343
	344	TAxis *ax = h1[0]->GetXaxis();
48797466	345	for(Int_t ib=1; ib<=ax->GetNbins(); ib++){
	346	if(!(n1 = (Int_t)h1[0]->GetBinContent(ib))) continue;
	347	n2 = (Int_t)h1[1]->GetBinContent(ib);
	348	eff = n2/Float_t(n1);
	349
	350	ip=g->GetN();
	351	g->SetPoint(ip, ax->GetBinCenter(ib), eff);
	352	g->SetPointError(ip, 0., n2 ? eff*TMath::Sqrt(1./n1+1./n2) : 0.);
	353	}
9a281e83	354	}