[u/mrichter/AliRoot.git] / PWGHF / hfe / AliHFEtofPIDqa.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.                  *
**************************************************************************/
//
// Class AliHFEtofPIDqa
//
// Monitoring TOF PID in the HFE PID montioring framework. The following
// quantities are monitored:
//   TOF time distance to electron hypothesis (Number of sigmas)
//   TOF time distance to the pion hypothesis (Absolute value)
//   TPC dE/dx (Number of sigmas, as control histogram)
// (Always as function of momentum, particle species and centrality 
// before and after cut)
// More information about the PID monitoring framework can be found in
// AliHFEpidQAmanager.cxx and AliHFEdetPIDqa.cxx
//
// Author:
//
//   Markus Fasel <M.Fasel@gsi.de>
#include <TClass.h>
#include <TH2.h>
#include <THnSparse.h>
#include <TString.h>

#include "AliLog.h"
#include "AliPID.h"
#include "AliPIDResponse.h"
#include "AliVParticle.h"

#include "AliHFEcollection.h"
#include "AliHFEpid.h"
#include "AliHFEpidBase.h"
#include "AliHFEpidQAmanager.h"
#include "AliHFEpidTPC.h"
#include "AliHFEpidTRD.h"
#include "AliHFEpidTOF.h"
#include "AliHFEtools.h"
#include "AliHFEtofPIDqa.h"

ClassImp(AliHFEpidTOF)

//_________________________________________________________
AliHFEtofPIDqa::AliHFEtofPIDqa():
    AliHFEdetPIDqa()
  , fHistos(NULL)
{
  //
  // Dummy constructor
  //
}

//_________________________________________________________
AliHFEtofPIDqa::AliHFEtofPIDqa(const char* name):
    AliHFEdetPIDqa(name, "QA for TOF")
  , fHistos(NULL)
{
  //
  // Default constructor
  //
}

//_________________________________________________________
AliHFEtofPIDqa::AliHFEtofPIDqa(const AliHFEtofPIDqa &o):
    AliHFEdetPIDqa(o)
  , fHistos()
{
  //
  // Copy constructor
  //
  o.Copy(*this);
}

//_________________________________________________________
AliHFEtofPIDqa &AliHFEtofPIDqa::operator=(const AliHFEtofPIDqa &o){
  //
  // Do assignment
  //
  AliHFEdetPIDqa::operator=(o);
  if(&o != this) o.Copy(*this);
  return *this;
}

//_________________________________________________________
AliHFEtofPIDqa::~AliHFEtofPIDqa(){
  //
  // Destructor
  //
  if(fHistos) delete fHistos;
}

//_________________________________________________________
void AliHFEtofPIDqa::Copy(TObject &o) const {
  //
  // Make copy
  //
  AliHFEtofPIDqa &target = dynamic_cast<AliHFEtofPIDqa &>(o);
  if(target.fHistos){
    delete target.fHistos;
    target.fHistos = NULL;
  }
  if(fHistos) target.fHistos = new AliHFEcollection(*fHistos);
}

//_________________________________________________________
Long64_t AliHFEtofPIDqa::Merge(TCollection *coll){
  //
  // Merge with other objects
  //
  if(!coll) return 0;
  if(coll->IsEmpty()) return 1;

  TIter it(coll);
  AliHFEtofPIDqa *refQA = NULL;
  TObject *o = NULL;
  Long64_t count = 0;
  TList listHistos;
  while((o = it())){
    refQA = dynamic_cast<AliHFEtofPIDqa *>(o);
    if(!refQA) continue;

    listHistos.Add(refQA->fHistos);
    count++; 
  }
  fHistos->Merge(&listHistos);
  return count + 1;
}

//_________________________________________________________
void AliHFEtofPIDqa::Initialize(){
  //
  // Define Histograms
  //

  fHistos = new AliHFEcollection("tofqahistos", "Collection of TOF QA histograms");

  // Make common binning
  const Int_t kPIDbins = AliPID::kSPECIES + 1;
  const Int_t kSteps = 2;
  const Int_t kCentralityBins = 11;
  const Double_t kMinPID = -1;
  const Double_t kMinP = 0.;
  const Double_t kMaxPID = (Double_t)AliPID::kSPECIES;
  const Double_t kMaxP = 20.;
  // Quantities where one can switch between low and high resolution
  Int_t kPbins = fQAmanager->HasHighResolutionHistos() ?  1000 : 100;
  Int_t kSigmaBins = fQAmanager->HasHighResolutionHistos() ? 1400 : 140;

  // 1st histogram: TOF sigmas: (species, p nsigma, step)
  Int_t nBinsSigma[5] = {kPIDbins, kPbins, kSigmaBins, kSteps, kCentralityBins};
  Double_t minSigma[5] = {kMinPID, kMinP, -12., 0, 0};
  Double_t maxSigma[5] = {kMaxPID, kMaxP, 12., 2., 11.};
  fHistos->CreateTHnSparse("tofnSigma", "TOF signal; species; p [GeV/c]; TOF signal [a.u.]; Selection Step; Centrality", 5, nBinsSigma, minSigma, maxSigma);

  // 3rd histogram: TPC sigmas to the electron line: (species, p nsigma, step - only filled if apriori PID information available)
  fHistos->CreateTHnSparse("tofMonitorTPC", "TPC signal; species; p [GeV/c]; TPC signal [a.u.]; Selection Step; Centrality", 5, nBinsSigma, minSigma, maxSigma);
}

//_________________________________________________________
void AliHFEtofPIDqa::ProcessTrack(const AliHFEpidObject *track, AliHFEdetPIDqa::EStep_t step){
  //
  // Fill TPC histograms
  //
  //AliHFEpidObject::AnalysisType_t anatype = track->IsESDanalysis() ? AliHFEpidObject::kESDanalysis : AliHFEpidObject::kAODanalysis;
  AliHFEpidObject::AnalysisType_t anatype = track->IsESDanalysis() ? AliHFEpidObject::kESDanalysis : AliHFEpidObject::kAODanalysis;

  Float_t centrality = track->GetCentrality();
  Int_t species = track->GetAbInitioPID();
  if(species >= AliPID::kSPECIES) species = -1;

  AliDebug(1, Form("Monitoring particle of type %d for step %d", species, step));
  AliHFEpidTOF *tofpid= dynamic_cast<AliHFEpidTOF *>(fQAmanager->GetDetectorPID(AliHFEpid::kTOFpid));
  AliHFEpidTRD *trdpid= dynamic_cast<AliHFEpidTRD *>(fQAmanager->GetDetectorPID(AliHFEpid::kTRDpid));
  
  const AliPIDResponse *pidResponse = tofpid ? tofpid->GetPIDResponse() : NULL;
  Double_t contentSignal[5];
  contentSignal[0] = species;
  contentSignal[1] = track->GetRecTrack()->P();
  contentSignal[2] = pidResponse ? pidResponse->NumberOfSigmasTOF(track->GetRecTrack(), AliPID::kElectron): 0.;
  contentSignal[3] = step;
  contentSignal[4] = centrality;
  fHistos->Fill("tofnSigma", contentSignal);
  //if(species > -1){
  contentSignal[1] =trdpid ? trdpid->GetP(track->GetRecTrack(), anatype) : 0.;
  contentSignal[2] = pidResponse ? pidResponse->NumberOfSigmasTPC(track->GetRecTrack(), AliPID::kElectron) : 0.;
    fHistos->Fill("tofMonitorTPC", contentSignal);
  //}
}

//_________________________________________________________
TH2 *AliHFEtofPIDqa::MakeTPCspectrumNsigma(AliHFEdetPIDqa::EStep_t step, Int_t species, Int_t centralityClass){
  //
  // Get the TPC control histogram for the TRD selection step (either before or after PID)
  //
  THnSparseF *histo = dynamic_cast<THnSparseF *>(fHistos->Get("tofMonitorTPC"));
  if(!histo){
    AliError("QA histogram monitoring TPC nSigma not available");
    return NULL;
  }
  if(species > -1 && species < AliPID::kSPECIES){
    // cut on species (if available)
    histo->GetAxis(0)->SetRange(species + 2, species + 2); // undef + underflow
  }
  TString centname, centtitle;
  Bool_t hasCentralityInfo = kTRUE;
  if(centralityClass > -1){
    if(histo->GetNdimensions() < 5){
      AliError("Centrality Information not available");
      centname = centtitle = "MinBias";
      hasCentralityInfo = kFALSE;
    } else {
      // Project centrality classes
      // -1 is Min. Bias
      histo->GetAxis(4)->SetRange(centralityClass+1, centralityClass+1);
      centname = Form("Cent%d", centralityClass);
      centtitle = Form("Centrality %d", centralityClass);
    }
  } else {
    histo->GetAxis(4)->SetRange(1, histo->GetAxis(4)->GetNbins()-1);
    centname = centtitle = "MinBias";
    hasCentralityInfo = kTRUE;
  }
  histo->GetAxis(3)->SetRange(step + 1, step + 1); 

  TH2 *hSpec = histo->Projection(2, 1);
  // construct title and name
  TString stepname = step == AliHFEdetPIDqa::kBeforePID ? "before" : "after";
  TString speciesname = species > -1 && species < AliPID::kSPECIES ? AliPID::ParticleName(species) : "all Particles";
  TString specID = species > -1 && species < AliPID::kSPECIES ? AliPID::ParticleName(species) : "unid";
  TString histname = Form("hSigmaTPC%s%s%s", specID.Data(), stepname.Data(), centname.Data());
  TString histtitle = Form("TPC Sigma for %s %s PID %s", speciesname.Data(), stepname.Data(), centtitle.Data());
  hSpec->SetName(histname.Data());
  hSpec->SetTitle(histtitle.Data());

  // Unset range on the original histogram
  histo->GetAxis(0)->SetRange(0, histo->GetAxis(0)->GetNbins());
  histo->GetAxis(3)->SetRange(0, histo->GetAxis(3)->GetNbins());
  if(hasCentralityInfo)histo->GetAxis(4)->SetRange(0, histo->GetAxis(4)->GetNbins());
  return hSpec; 
}

//_________________________________________________________
TH2 *AliHFEtofPIDqa::MakeSpectrumNSigma(AliHFEdetPIDqa::EStep_t istep, Int_t species, Int_t centralityClass){
  //
  // Plot the Spectrum
  //
  THnSparseF *hSignal = dynamic_cast<THnSparseF *>(fHistos->Get("tofnSigma"));
  if(!hSignal) return NULL;
  hSignal->GetAxis(3)->SetRange(istep + 1, istep + 1);
  if(species >= 0 && species < AliPID::kSPECIES)
    hSignal->GetAxis(0)->SetRange(2 + species, 2 + species);
  TString centname, centtitle;
  Bool_t hasCentralityInfo = kTRUE;
  if(centralityClass > -1){
    if(hSignal->GetNdimensions() < 5){
      AliError("Centrality Information not available");
      centname = centtitle = "MinBias";
      hasCentralityInfo = kFALSE;
    } else {
      // Project centrality classes
      // -1 is Min. Bias
      AliInfo(Form("Centrality Class: %d", centralityClass));
      hSignal->GetAxis(4)->SetRange(centralityClass+1, centralityClass+1);
      centname = Form("Cent%d", centralityClass);
      centtitle = Form("Centrality %d", centralityClass);
    }
  } else {
    hSignal->GetAxis(4)->SetRange(1, hSignal->GetAxis(4)->GetNbins()-1);
    centname = centtitle = "MinBias";
    hasCentralityInfo = kTRUE;
  }
  TH2 *hTmp = hSignal->Projection(2,1);
  TString hname = Form("hTOFsigma%s%s", istep == AliHFEdetPIDqa::kBeforePID ? "before" : "after", centname.Data()), 
          htitle = Form("Time-of-flight spectrum[#sigma] %s selection %s", istep == AliHFEdetPIDqa::kBeforePID ? "before" : "after", centtitle.Data());
  if(species > -1){
    hname += AliPID::ParticleName(species);
    htitle += Form(" for %ss", AliPID::ParticleName(species));
  }
  hTmp->SetName(hname.Data());
  hTmp->SetTitle(htitle.Data());
  hTmp->SetStats(kFALSE);
  hTmp->GetXaxis()->SetTitle("p [GeV/c]");
  hTmp->GetYaxis()->SetTitle("TOF time|_{el} - expected time|_{el} [#sigma]");
  hSignal->GetAxis(3)->SetRange(0, hSignal->GetAxis(3)->GetNbins());
  hSignal->GetAxis(0)->SetRange(0, hSignal->GetAxis(0)->GetNbins());
  if(hasCentralityInfo)hSignal->GetAxis(4)->SetRange(0, hSignal->GetAxis(4)->GetNbins());
  return hTmp;
}

//_________________________________________________________
TH1 *AliHFEtofPIDqa::GetHistogram(const char *name){
  // 
  // Get the histogram
  //
  if(!fHistos) return NULL;
  TObject *histo = fHistos->Get(name);
  if(!histo->InheritsFrom("TH1")) return NULL;
  return dynamic_cast<TH1 *>(histo);
}
Commit	Line	Data
3a72645a	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	// Class AliHFEtofPIDqa
	17	//
	18	// Monitoring TOF PID in the HFE PID montioring framework. The following
	19	// quantities are monitored:
	20	// TOF time distance to electron hypothesis (Number of sigmas)
	21	// TOF time distance to the pion hypothesis (Absolute value)
	22	// TPC dE/dx (Number of sigmas, as control histogram)
	23	// (Always as function of momentum, particle species and centrality
	24	// before and after cut)
	25	// More information about the PID monitoring framework can be found in
	26	// AliHFEpidQAmanager.cxx and AliHFEdetPIDqa.cxx
	27	//
	28	// Author:
	29	//
	30	// Markus Fasel <M.Fasel@gsi.de>
	31	#include <TClass.h>
	32	#include <TH2.h>
	33	#include <THnSparse.h>
	34	#include <TString.h>
	35
3a72645a	36	#include "AliLog.h"
3a72645a	37	#include "AliPID.h"
8c1c76e9	38	#include "AliPIDResponse.h"
6555e2ad	39	#include "AliVParticle.h"
3a72645a	40
3a72645a	41	#include "AliHFEcollection.h"
6555e2ad	42	#include "AliHFEpid.h"
3a72645a	43	#include "AliHFEpidBase.h"
6555e2ad	44	#include "AliHFEpidQAmanager.h"
6555e2ad	45	#include "AliHFEpidTPC.h"
cedf0381	46	#include "AliHFEpidTRD.h"
6555e2ad	47	#include "AliHFEpidTOF.h"
3a72645a	48	#include "AliHFEtools.h"
	49	#include "AliHFEtofPIDqa.h"
	50
6555e2ad	51	ClassImp(AliHFEpidTOF)
6555e2ad	52
3a72645a	53	//_________________________________________________________
	54	AliHFEtofPIDqa::AliHFEtofPIDqa():
	55	AliHFEdetPIDqa()
	56	, fHistos(NULL)
	57	{
	58	//
	59	// Dummy constructor
	60	//
	61	}
	62
	63	//_________________________________________________________
	64	AliHFEtofPIDqa::AliHFEtofPIDqa(const char* name):
6555e2ad	65	AliHFEdetPIDqa(name, "QA for TOF")
3a72645a	66	, fHistos(NULL)
	67	{
	68	//
	69	// Default constructor
	70	//
	71	}
	72
	73	//_________________________________________________________
	74	AliHFEtofPIDqa::AliHFEtofPIDqa(const AliHFEtofPIDqa &o):
	75	AliHFEdetPIDqa(o)
	76	, fHistos()
	77	{
	78	//
	79	// Copy constructor
	80	//
	81	o.Copy(*this);
	82	}
	83
	84	//_________________________________________________________
	85	AliHFEtofPIDqa &AliHFEtofPIDqa::operator=(const AliHFEtofPIDqa &o){
	86	//
	87	// Do assignment
	88	//
	89	AliHFEdetPIDqa::operator=(o);
	90	if(&o != this) o.Copy(*this);
	91	return *this;
	92	}
	93
	94	//_________________________________________________________
	95	AliHFEtofPIDqa::~AliHFEtofPIDqa(){
	96	//
	97	// Destructor
	98	//
	99	if(fHistos) delete fHistos;
	100	}
	101
	102	//_________________________________________________________
	103	void AliHFEtofPIDqa::Copy(TObject &o) const {
	104	//
	105	// Make copy
	106	//
	107	AliHFEtofPIDqa &target = dynamic_cast<AliHFEtofPIDqa &>(o);
	108	if(target.fHistos){
	109	delete target.fHistos;
	110	target.fHistos = NULL;
	111	}
	112	if(fHistos) target.fHistos = new AliHFEcollection(*fHistos);
	113	}
	114
	115	//_________________________________________________________
	116	Long64_t AliHFEtofPIDqa::Merge(TCollection *coll){
	117	//
	118	// Merge with other objects
	119	//
	120	if(!coll) return 0;
	121	if(coll->IsEmpty()) return 1;
	122
	123	TIter it(coll);
	124	AliHFEtofPIDqa *refQA = NULL;
	125	TObject *o = NULL;
	126	Long64_t count = 0;
	127	TList listHistos;
	128	while((o = it())){
	129	refQA = dynamic_cast<AliHFEtofPIDqa *>(o);
130	if(!refQA) continue;
131
132	listHistos.Add(refQA->fHistos);
133	count++;
134	}
135	fHistos->Merge(&listHistos);
136	return count + 1;
137	}
138
139	//_________________________________________________________
140	void AliHFEtofPIDqa::Initialize(){
141	//
142	// Define Histograms
143	//
144
145	fHistos = new AliHFEcollection("tofqahistos", "Collection of TOF QA histograms");
146
147	// Make common binning
148	const Int_t kPIDbins = AliPID::kSPECIES + 1;
3a72645a	149	const Int_t kSteps = 2;
c2690925	150	const Int_t kCentralityBins = 11;
3a72645a	151	const Double_t kMinPID = -1;
	152	const Double_t kMinP = 0.;
	153	const Double_t kMaxPID = (Double_t)AliPID::kSPECIES;
	154	const Double_t kMaxP = 20.;
bf892a6a	155	// Quantities where one can switch between low and high resolution
bf892a6a	156	Int_t kPbins = fQAmanager->HasHighResolutionHistos() ? 1000 : 100;
cedf0381	157	Int_t kSigmaBins = fQAmanager->HasHighResolutionHistos() ? 1400 : 140;
bf892a6a	158
3a72645a	159	// 1st histogram: TOF sigmas: (species, p nsigma, step)
c2690925	160	Int_t nBinsSigma[5] = {kPIDbins, kPbins, kSigmaBins, kSteps, kCentralityBins};
	161	Double_t minSigma[5] = {kMinPID, kMinP, -12., 0, 0};
	162	Double_t maxSigma[5] = {kMaxPID, kMaxP, 12., 2., 11.};
	163	fHistos->CreateTHnSparse("tofnSigma", "TOF signal; species; p [GeV/c]; TOF signal [a.u.]; Selection Step; Centrality", 5, nBinsSigma, minSigma, maxSigma);
3a72645a	164
3a72645a	165	// 3rd histogram: TPC sigmas to the electron line: (species, p nsigma, step - only filled if apriori PID information available)
c2690925	166	fHistos->CreateTHnSparse("tofMonitorTPC", "TPC signal; species; p [GeV/c]; TPC signal [a.u.]; Selection Step; Centrality", 5, nBinsSigma, minSigma, maxSigma);
3a72645a	167	}
	168
	169	//_________________________________________________________
6555e2ad	170	void AliHFEtofPIDqa::ProcessTrack(const AliHFEpidObject *track, AliHFEdetPIDqa::EStep_t step){
3a72645a	171	//
	172	// Fill TPC histograms
	173	//
8c1c76e9	174	//AliHFEpidObject::AnalysisType_t anatype = track->IsESDanalysis() ? AliHFEpidObject::kESDanalysis : AliHFEpidObject::kAODanalysis;
cedf0381	175	AliHFEpidObject::AnalysisType_t anatype = track->IsESDanalysis() ? AliHFEpidObject::kESDanalysis : AliHFEpidObject::kAODanalysis;
cedf0381	176
c2690925	177	Float_t centrality = track->GetCentrality();
3a72645a	178	Int_t species = track->GetAbInitioPID();
3a72645a	179	if(species >= AliPID::kSPECIES) species = -1;
3a72645a	180
3a72645a	181	AliDebug(1, Form("Monitoring particle of type %d for step %d", species, step));
6555e2ad	182	AliHFEpidTOF tofpid= dynamic_cast<AliHFEpidTOF >(fQAmanager->GetDetectorPID(AliHFEpid::kTOFpid));
cedf0381	183	AliHFEpidTRD trdpid= dynamic_cast<AliHFEpidTRD >(fQAmanager->GetDetectorPID(AliHFEpid::kTRDpid));
3a72645a	184
8c1c76e9	185	const AliPIDResponse *pidResponse = tofpid ? tofpid->GetPIDResponse() : NULL;
c2690925	186	Double_t contentSignal[5];
3a72645a	187	contentSignal[0] = species;
6555e2ad	188	contentSignal[1] = track->GetRecTrack()->P();
8c1c76e9	189	contentSignal[2] = pidResponse ? pidResponse->NumberOfSigmasTOF(track->GetRecTrack(), AliPID::kElectron): 0.;
3a72645a	190	contentSignal[3] = step;
c2690925	191	contentSignal[4] = centrality;
bf892a6a	192	fHistos->Fill("tofnSigma", contentSignal);
cedf0381	193	//if(species > -1){
	194	contentSignal[1] =trdpid ? trdpid->GetP(track->GetRecTrack(), anatype) : 0.;
	195	contentSignal[2] = pidResponse ? pidResponse->NumberOfSigmasTPC(track->GetRecTrack(), AliPID::kElectron) : 0.;
3a72645a	196	fHistos->Fill("tofMonitorTPC", contentSignal);
cedf0381	197	//}
	198	}
	199
	200	//_________________________________________________________
	201	TH2 *AliHFEtofPIDqa::MakeTPCspectrumNsigma(AliHFEdetPIDqa::EStep_t step, Int_t species, Int_t centralityClass){
	202	//
	203	// Get the TPC control histogram for the TRD selection step (either before or after PID)
	204	//
	205	THnSparseF histo = dynamic_cast<THnSparseF >(fHistos->Get("tofMonitorTPC"));
	206	if(!histo){
	207	AliError("QA histogram monitoring TPC nSigma not available");
	208	return NULL;
	209	}
	210	if(species > -1 && species < AliPID::kSPECIES){
	211	// cut on species (if available)
	212	histo->GetAxis(0)->SetRange(species + 2, species + 2); // undef + underflow
	213	}
	214	TString centname, centtitle;
	215	Bool_t hasCentralityInfo = kTRUE;
	216	if(centralityClass > -1){
	217	if(histo->GetNdimensions() < 5){
	218	AliError("Centrality Information not available");
	219	centname = centtitle = "MinBias";
	220	hasCentralityInfo = kFALSE;
	221	} else {
	222	// Project centrality classes
	223	// -1 is Min. Bias
	224	histo->GetAxis(4)->SetRange(centralityClass+1, centralityClass+1);
	225	centname = Form("Cent%d", centralityClass);
	226	centtitle = Form("Centrality %d", centralityClass);
	227	}
	228	} else {
	229	histo->GetAxis(4)->SetRange(1, histo->GetAxis(4)->GetNbins()-1);
	230	centname = centtitle = "MinBias";
	231	hasCentralityInfo = kTRUE;
3a72645a	232	}
cedf0381	233	histo->GetAxis(3)->SetRange(step + 1, step + 1);
	234
	235	TH2 *hSpec = histo->Projection(2, 1);
	236	// construct title and name
	237	TString stepname = step == AliHFEdetPIDqa::kBeforePID ? "before" : "after";
	238	TString speciesname = species > -1 && species < AliPID::kSPECIES ? AliPID::ParticleName(species) : "all Particles";
	239	TString specID = species > -1 && species < AliPID::kSPECIES ? AliPID::ParticleName(species) : "unid";
	240	TString histname = Form("hSigmaTPC%s%s%s", specID.Data(), stepname.Data(), centname.Data());
	241	TString histtitle = Form("TPC Sigma for %s %s PID %s", speciesname.Data(), stepname.Data(), centtitle.Data());
	242	hSpec->SetName(histname.Data());
	243	hSpec->SetTitle(histtitle.Data());
	244
	245	// Unset range on the original histogram
	246	histo->GetAxis(0)->SetRange(0, histo->GetAxis(0)->GetNbins());
	247	histo->GetAxis(3)->SetRange(0, histo->GetAxis(3)->GetNbins());
	248	if(hasCentralityInfo)histo->GetAxis(4)->SetRange(0, histo->GetAxis(4)->GetNbins());
	249	return hSpec;
3a72645a	250	}
3a72645a	251
3a72645a	252	//_________________________________________________________
4437a0d2	253	TH2 *AliHFEtofPIDqa::MakeSpectrumNSigma(AliHFEdetPIDqa::EStep_t istep, Int_t species, Int_t centralityClass){
3a72645a	254	//
	255	// Plot the Spectrum
	256	//
	257	THnSparseF hSignal = dynamic_cast<THnSparseF >(fHistos->Get("tofnSigma"));
bf892a6a	258	if(!hSignal) return NULL;
3a72645a	259	hSignal->GetAxis(3)->SetRange(istep + 1, istep + 1);
e3ae862b	260	if(species >= 0 && species < AliPID::kSPECIES)
3a72645a	261	hSignal->GetAxis(0)->SetRange(2 + species, 2 + species);
4437a0d2	262	TString centname, centtitle;
	263	Bool_t hasCentralityInfo = kTRUE;
	264	if(centralityClass > -1){
	265	if(hSignal->GetNdimensions() < 5){
	266	AliError("Centrality Information not available");
	267	centname = centtitle = "MinBias";
	268	hasCentralityInfo = kFALSE;
	269	} else {
	270	// Project centrality classes
	271	// -1 is Min. Bias
	272	AliInfo(Form("Centrality Class: %d", centralityClass));
	273	hSignal->GetAxis(4)->SetRange(centralityClass+1, centralityClass+1);
	274	centname = Form("Cent%d", centralityClass);
	275	centtitle = Form("Centrality %d", centralityClass);
	276	}
	277	} else {
	278	hSignal->GetAxis(4)->SetRange(1, hSignal->GetAxis(4)->GetNbins()-1);
	279	centname = centtitle = "MinBias";
	280	hasCentralityInfo = kTRUE;
	281	}
3a72645a	282	TH2 *hTmp = hSignal->Projection(2,1);
4437a0d2	283	TString hname = Form("hTOFsigma%s%s", istep == AliHFEdetPIDqa::kBeforePID ? "before" : "after", centname.Data()),
4437a0d2	284	htitle = Form("Time-of-flight spectrum[#sigma] %s selection %s", istep == AliHFEdetPIDqa::kBeforePID ? "before" : "after", centtitle.Data());
3a72645a	285	if(species > -1){
bf892a6a	286	hname += AliPID::ParticleName(species);
bf892a6a	287	htitle += Form(" for %ss", AliPID::ParticleName(species));
3a72645a	288	}
bf892a6a	289	hTmp->SetName(hname.Data());
bf892a6a	290	hTmp->SetTitle(htitle.Data());
3a72645a	291	hTmp->SetStats(kFALSE);
	292	hTmp->GetXaxis()->SetTitle("p [GeV/c]");
	293	hTmp->GetYaxis()->SetTitle("TOF time\|_{el} - expected time\|_{el} [#sigma]");
	294	hSignal->GetAxis(3)->SetRange(0, hSignal->GetAxis(3)->GetNbins());
	295	hSignal->GetAxis(0)->SetRange(0, hSignal->GetAxis(0)->GetNbins());
4437a0d2	296	if(hasCentralityInfo)hSignal->GetAxis(4)->SetRange(0, hSignal->GetAxis(4)->GetNbins());
3a72645a	297	return hTmp;
	298	}
	299
	300	//_________________________________________________________
	301	TH1 AliHFEtofPIDqa::GetHistogram(const char name){
	302	//
	303	// Get the histogram
	304	//
	305	if(!fHistos) return NULL;
	306	TObject *histo = fHistos->Get(name);
	307	if(!histo->InheritsFrom("TH1")) return NULL;
	308	return dynamic_cast<TH1 *>(histo);
	309	}
	310