[u/mrichter/AliRoot.git] / TRD / qaAnalysis / AliTRDqaJPsi.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 iLs" without express or implied warranty.                  *
 **************************************************************************/

/* $Id$ */

//
// This class is a part of a package of high level QA monitoring for TRD.
//
// S. Radomski
// radomski@physi.uni-heidelberg.de
// March 2008
//

#include "AliTRDqaJPsi.h"
#include "AliTRDqaAT.h"

#include "TFile.h"
#include "TH1D.h"
#include "TH2D.h"
#include "TChain.h"

#include "AliESDEvent.h" 
#include "AliESDtrack.h"
#include "AliKFParticle.h"

#include "TLorentzVector.h"

//const AliTRDqaJPsi::knSteps = 5;

//______________________________________________________________________________

AliTRDqaJPsi::AliTRDqaJPsi() 
  : AliAnalysisTask("",""),  
    fChain(0),
    fESD(0),
    fOutputContainer(0),
    fnKFtracks(0)
{
  //
  // default dummy constructor
  //
 
}
//______________________________________________________________________________

AliTRDqaJPsi:: AliTRDqaJPsi(AliTRDqaJPsi& /*trd*/)
  : AliAnalysisTask("",""),  
    fChain(0),
    fESD(0),
    fOutputContainer(0),
    fnKFtracks(0)
{
  //
  // Dummy copy constructor
  //

  //return *this;
}


//______________________________________________________________________________
AliTRDqaJPsi::AliTRDqaJPsi(const char *name) 
  : AliAnalysisTask(name,""),  
    fChain(0),
    fESD(0),
    fOutputContainer(0),
    fnKFtracks(0)
    
{
  // Constructor.
  // Input slot #0 works with an Ntuple
  DefineInput(0, TChain::Class());
  // Output slot #0 writes into a TH1 container
  DefineOutput(0,  TObjArray::Class()) ; 
}

//______________________________________________________________________________
void AliTRDqaJPsi::ConnectInputData(const Option_t *)
{
  // Initialisation of branch container and histograms 

  //AliInfo(Form("*** Initialization of %s", GetName())) ; 

  fChain = (TChain*)GetInputData(0);
  fESD = new AliESDEvent();
  fESD->ReadFromTree(fChain);
}

//________________________________________________________________________
void AliTRDqaJPsi::CreateOutputObjects()
{
  
  Int_t c = 0;
  fOutputContainer = new TObjArray(100);
  
  const char *charge[2] = {"Neg", "Pos"};
  
  // build histograms
  
  for(Int_t i=0; i<knSteps; i++) {

    fStatus[i] = new TH1D(Form("status_%d", i), "status", 32, -0.5, 31.5);
    fOutputContainer->AddAt(fStatus[i], c++);
    
    fInvMass[i] = new TH1D(Form("mass_%d", i), ";m_{inv} (GeV);", 100, 0, 5);
    fOutputContainer->AddAt(fInvMass[i], c++);
    
    fInvMassVec[i] = new TH1D(Form("massVec_%d", i), ";m_{inv} (GeV);", 100, 0, 5);
    fOutputContainer->AddAt(fInvMassVec[i], c++);
    
    fInvMassDiff[i] = new TH1D(Form("massDiff_%d", i), ";m_{inv} (GeV);", 100, -1, 1);
    fOutputContainer->AddAt(fInvMassDiff[i], c++);
    
    fAngleSM[i] = new TH1D(Form("angleSM_%d", i), ";#delta SM", 19, -0.5, 18.5); 	
    fOutputContainer->AddAt(fAngleSM[i], c++);
    
    fPtAngle[i] = new TH2D(Form("ptAngle_%d", i), ";p_{T} (GeV/c);#delta SM",
			   20, 0, 5, 10, -0.5, 9.5);
    fOutputContainer->AddAt(fPtAngle[i], c++);
    

    for(Int_t j=0; j<2; j++) {
      fnTracks[j*knSteps+i] = 
	new TH1D(Form("nTracks%s_%d", charge[j],i), Form("%s;number of tracks",charge[j]), 100, -0.5, 99.5);
      fPt[j*knSteps+i] = new TH1D(Form("pt%s_%d", charge[j], i), Form("%s;p_{T} (GeV/c)", charge[j]), 100, 0, 5);
      fPID[j*knSteps+i] = new TH1D(Form("pid%s_%d", charge[j], i), ";electron LQ", 100, 0, 1);

      fOutputContainer->AddAt(fnTracks[j*knSteps+i], c++);
      fOutputContainer->AddAt(fPt[j*knSteps+i], c++); 
      fOutputContainer->AddAt(fPID[j*knSteps+i], c++); 
    }
  }

  //TH2D *fnGoodTracks;  

  printf("n hist = %d\n", c);
}
//______________________________________________________________________________
void AliTRDqaJPsi::Exec(Option_t *) 
{
  /*
    Selection steps:
    - Parameters In and Out
    - TRDrefit bit
    - TRDpid and quality
    - pt > 0.8 GeV/c
    - PID > 0.9
   */


  // Process one event
  Long64_t entry = fChain->GetReadEntry() ;
  if (!(entry%100)) Info("Exec", "Entry = %ld", entry);

  // Processing of one event 
   
  if (!fESD) {
    //AliError("fESD is not connected to the input!") ; 
    return ; 
  }
  
  
  Int_t nTracks = fESD->GetNumberOfTracks();
  Int_t cTracks[2*knSteps] = {0,0,0,0,0,0,0,0,0,0};
  fnKFtracks = 0;

  // track loop
  for(Int_t i=0; i<nTracks; i++) {
    
    //
    // track selection 
    //
    // param in and Out
    // TRDrefit and TRDPid bit
    //
 
    AliESDtrack *track = fESD->GetTrack(i);
    const AliExternalTrackParam *paramOut = track->GetOuterParam();
    const AliExternalTrackParam *paramIn = track->GetInnerParam();

    // long track ..
    if (!paramIn) continue;
    if (!paramOut) continue;

    Int_t step    = 0;
    Int_t charge  = (track->Charge() > 0) ? 1 : 0;
    UInt_t status = track->GetStatus();
    Double_t pt   = track->Pt();
    Double_t pid  = track->GetTRDpid(AliPID::kElectron);
    
    Double_t esdPid[5];
    track->GetESDpid(esdPid); 

    // create a kalman particle
    Int_t pdg = (charge == 0)? -11 : 11;
    for(Int_t k=0; k<knSteps; k++) fInSample[fnKFtracks][k] = 0;  
 
    vec[fnKFtracks] = CreateVector(track);
    tracks[fnKFtracks] = new AliKFParticle(*track, pdg);
    fSM[fnKFtracks] = AliTRDqaAT::GetSector(paramOut->GetAlpha());
    fnKFtracks++;

    //AliTRDqaAT::PrintPID(track);

    // apply the cuts

    cTracks[knSteps *charge + step]++;
    FillHist(track, step++);

    if (!(status & AliESDtrack::kTRDrefit)) continue;

    cTracks[knSteps *charge + step]++;    
    FillHist(track, step++);    

    if (!(status & AliESDtrack::kTRDpid)) continue;
    if (track->GetTRDpidQuality() < 6) continue;

    cTracks[knSteps *charge + step]++;
    FillHist(track, step++);  

    if (pt < 0.8) continue;

    cTracks[knSteps *charge + step]++;
    FillHist(track, step++);      

    if (pid < 0.3) continue; // 
    //if (esdPid[AliPID::kElectron] < 0.5) continue;
    
    cTracks[knSteps *charge + step]++;
    FillHist(track, step);  

    for(Int_t k=0; k<2*knSteps; k++) fnTracks[k]->Fill(cTracks[k]);
  }

  // calculate invariant mass

  for(Int_t k=0; k<knSteps; k++) {
    for(Int_t i=0; i<fnKFtracks; i++) {
      if (!fInSample[i][k]) continue;
      for(Int_t j=i+1; j<fnKFtracks; j++) {
	if (!fInSample[j][k]) continue;
	AliKFParticle jpsi(*(tracks[i]), *(tracks[j]));
	TLorentzVector jpsiVec = (*(vec[i])) + (*vec[j]);
	fInvMass[k]->Fill(jpsi.GetMass());
	fInvMassVec[k]->Fill(jpsiVec.M());
	fInvMassDiff[k]->Fill(jpsiVec.M() - jpsi.GetMass());
	
	if (jpsi.GetMass() > 2.5 && jpsi.GetMass() < 3.5) {
	  Int_t dSM = TMath::Abs(fSM[i] - fSM[j]);
	  if (dSM > 9) dSM = (18-dSM);
	  fAngleSM[k]->Fill(dSM);
	  fPtAngle[k]->Fill(TMath::Hypot(jpsi.GetPx(), jpsi.GetPy()), dSM);
	}
	
      }
    }
  }

  PostData(0, fOutputContainer);
}

//______________________________________________________________________________
void AliTRDqaJPsi::Terminate(Option_t *)
{
  // save histograms
  fOutputContainer = (TObjArray*)GetOutputData(0);
  
  TFile *file = new TFile("outJPsi.root", "RECREATE");
  fOutputContainer->Write();
  
  file->Flush();
  file->Close();
  delete file;  

  //for(Int_t i=0; i<fOutputContainer->GetEntries(); i++) {
  //  TObject *obj = fOu
  // }
}

//______________________________________________________________________________

void AliTRDqaJPsi::FillHist(AliESDtrack *track, Int_t step) {

  Int_t charge  = (track->Charge() > 0) ? 1 : 0;
  UInt_t status = track->GetStatus();
  Double_t pt   = track->Pt();
  Double_t pid  = track->GetTRDpid(AliPID::kElectron);
  
  Double_t esdPid[5];
  track->GetESDpid(esdPid);

  Int_t id = charge * knSteps + step;
  AliTRDqaAT::FillStatus(fStatus[step], status);
  fPt[id]->Fill(pt);
  fPID[id]->Fill(pid);
  //fPID[id]->Fill(esdPid[AliPID::kElectron]);

  fInSample[fnKFtracks-1][step] = 1;
}

//______________________________________________________________________________

TLorentzVector *AliTRDqaJPsi::CreateVector(AliESDtrack *track) {

  TLorentzVector *vec = new TLorentzVector();
  vec->SetXYZM(track->Px(), track->Py(), track->Pz(), 0);
  return vec;
}

//______________________________________________________________________________
Commit	Line	Data
8e2f611a	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 iLs" without express or implied warranty. *
	14	**************************************************************************/
	15
	16	/* $Id$ */
	17
	18	//
	19	// This class is a part of a package of high level QA monitoring for TRD.
	20	//
	21	// S. Radomski
	22	// radomski@physi.uni-heidelberg.de
	23	// March 2008
	24	//
	25
	26	#include "AliTRDqaJPsi.h"
	27	#include "AliTRDqaAT.h"
	28
	29	#include "TFile.h"
	30	#include "TH1D.h"
	31	#include "TH2D.h"
	32	#include "TChain.h"
	33
	34	#include "AliESDEvent.h"
	35	#include "AliESDtrack.h"
	36	#include "AliKFParticle.h"
	37
	38	#include "TLorentzVector.h"
	39
	40	//const AliTRDqaJPsi::knSteps = 5;
	41
	42	//______________________________________________________________________________
	43
	44	AliTRDqaJPsi::AliTRDqaJPsi()
	45	: AliAnalysisTask("",""),
	46	fChain(0),
	47	fESD(0),
	48	fOutputContainer(0),
	49	fnKFtracks(0)
	50	{
	51	//
	52	// default dummy constructor
	53	//
	54
	55	}
	56	//______________________________________________________________________________
	57
	58	AliTRDqaJPsi:: AliTRDqaJPsi(AliTRDqaJPsi& /trd/)
	59	: AliAnalysisTask("",""),
	60	fChain(0),
	61	fESD(0),
	62	fOutputContainer(0),
	63	fnKFtracks(0)
	64	{
65	//
66	// Dummy copy constructor
67	//
68
69	//return *this;
70	}
71
72
73	//______________________________________________________________________________
74	AliTRDqaJPsi::AliTRDqaJPsi(const char *name)
75	: AliAnalysisTask(name,""),
76	fChain(0),
77	fESD(0),
78	fOutputContainer(0),
79	fnKFtracks(0)
80
81	{
82	// Constructor.
83	// Input slot #0 works with an Ntuple
84	DefineInput(0, TChain::Class());
85	// Output slot #0 writes into a TH1 container
86	DefineOutput(0, TObjArray::Class()) ;
87	}
88
89	//______________________________________________________________________________
90	void AliTRDqaJPsi::ConnectInputData(const Option_t *)
91	{
92	// Initialisation of branch container and histograms
93
94	//AliInfo(Form("*** Initialization of %s", GetName())) ;
95
96	fChain = (TChain*)GetInputData(0);
97	fESD = new AliESDEvent();
98	fESD->ReadFromTree(fChain);
99	}
100
101	//________________________________________________________________________
102	void AliTRDqaJPsi::CreateOutputObjects()
103	{
104
105	Int_t c = 0;
106	fOutputContainer = new TObjArray(100);
107
108	const char *charge[2] = {"Neg", "Pos"};
109
110	// build histograms
111
112	for(Int_t i=0; i<knSteps; i++) {
113
114	fStatus[i] = new TH1D(Form("status_%d", i), "status", 32, -0.5, 31.5);
115	fOutputContainer->AddAt(fStatus[i], c++);
116
117	fInvMass[i] = new TH1D(Form("mass_%d", i), ";m_{inv} (GeV);", 100, 0, 5);
118	fOutputContainer->AddAt(fInvMass[i], c++);
119
120	fInvMassVec[i] = new TH1D(Form("massVec_%d", i), ";m_{inv} (GeV);", 100, 0, 5);
121	fOutputContainer->AddAt(fInvMassVec[i], c++);
122
123	fInvMassDiff[i] = new TH1D(Form("massDiff_%d", i), ";m_{inv} (GeV);", 100, -1, 1);
124	fOutputContainer->AddAt(fInvMassDiff[i], c++);
125
126	fAngleSM[i] = new TH1D(Form("angleSM_%d", i), ";#delta SM", 19, -0.5, 18.5);
127	fOutputContainer->AddAt(fAngleSM[i], c++);
128
129	fPtAngle[i] = new TH2D(Form("ptAngle_%d", i), ";p_{T} (GeV/c);#delta SM",
130	20, 0, 5, 10, -0.5, 9.5);
131	fOutputContainer->AddAt(fPtAngle[i], c++);
132
133
134	for(Int_t j=0; j<2; j++) {
135	fnTracks[j*knSteps+i] =
136	new TH1D(Form("nTracks%s_%d", charge[j],i), Form("%s;number of tracks",charge[j]), 100, -0.5, 99.5);
137	fPt[j*knSteps+i] = new TH1D(Form("pt%s_%d", charge[j], i), Form("%s;p_{T} (GeV/c)", charge[j]), 100, 0, 5);
138	fPID[j*knSteps+i] = new TH1D(Form("pid%s_%d", charge[j], i), ";electron LQ", 100, 0, 1);
139
140	fOutputContainer->AddAt(fnTracks[j*knSteps+i], c++);
141	fOutputContainer->AddAt(fPt[j*knSteps+i], c++);
142	fOutputContainer->AddAt(fPID[j*knSteps+i], c++);
143	}
144	}
145
146	//TH2D *fnGoodTracks;
147
148	printf("n hist = %d\n", c);
149	}
150	//______________________________________________________________________________
151	void AliTRDqaJPsi::Exec(Option_t *)
152	{
153	/*
154	Selection steps:
155	- Parameters In and Out
156	- TRDrefit bit
157	- TRDpid and quality
158	- pt > 0.8 GeV/c
159	- PID > 0.9
160	*/
161
162
163	// Process one event
164	Long64_t entry = fChain->GetReadEntry() ;
165	if (!(entry%100)) Info("Exec", "Entry = %ld", entry);
166
167	// Processing of one event
168
169	if (!fESD) {
170	//AliError("fESD is not connected to the input!") ;
171	return ;
172	}
173
174
175	Int_t nTracks = fESD->GetNumberOfTracks();
176	Int_t cTracks[2*knSteps] = {0,0,0,0,0,0,0,0,0,0};
177	fnKFtracks = 0;
178
179	// track loop
180	for(Int_t i=0; i<nTracks; i++) {
181
182	//
183	// track selection
184	//
185	// param in and Out
186	// TRDrefit and TRDPid bit
187	//
188
189	AliESDtrack *track = fESD->GetTrack(i);
190	const AliExternalTrackParam *paramOut = track->GetOuterParam();
191	const AliExternalTrackParam *paramIn = track->GetInnerParam();
192
193	// long track ..
194	if (!paramIn) continue;
195	if (!paramOut) continue;
196
197	Int_t step = 0;
198	Int_t charge = (track->Charge() > 0) ? 1 : 0;
199	UInt_t status = track->GetStatus();
200	Double_t pt = track->Pt();
201	Double_t pid = track->GetTRDpid(AliPID::kElectron);
202
203	Double_t esdPid[5];
204	track->GetESDpid(esdPid);
205
206	// create a kalman particle
207	Int_t pdg = (charge == 0)? -11 : 11;
208	for(Int_t k=0; k<knSteps; k++) fInSample[fnKFtracks][k] = 0;
209
210	vec[fnKFtracks] = CreateVector(track);
211	tracks[fnKFtracks] = new AliKFParticle(*track, pdg);
212	fSM[fnKFtracks] = AliTRDqaAT::GetSector(paramOut->GetAlpha());
213	fnKFtracks++;
214
215	//AliTRDqaAT::PrintPID(track);
216
217	// apply the cuts
218
219	cTracks[knSteps *charge + step]++;
220	FillHist(track, step++);
221
222	if (!(status & AliESDtrack::kTRDrefit)) continue;
223
224	cTracks[knSteps *charge + step]++;
225	FillHist(track, step++);
226
227	if (!(status & AliESDtrack::kTRDpid)) continue;
228	if (track->GetTRDpidQuality() < 6) continue;
229
230	cTracks[knSteps *charge + step]++;
231	FillHist(track, step++);
232
233	if (pt < 0.8) continue;
234
235	cTracks[knSteps *charge + step]++;
236	FillHist(track, step++);
237
238	if (pid < 0.3) continue; //
239	//if (esdPid[AliPID::kElectron] < 0.5) continue;
240
241	cTracks[knSteps *charge + step]++;
242	FillHist(track, step);
243
244	for(Int_t k=0; k<2*knSteps; k++) fnTracks[k]->Fill(cTracks[k]);
245	}
246
247	// calculate invariant mass
248
249	for(Int_t k=0; k<knSteps; k++) {
250	for(Int_t i=0; i<fnKFtracks; i++) {
251	if (!fInSample[i][k]) continue;
252	for(Int_t j=i+1; j<fnKFtracks; j++) {
253	if (!fInSample[j][k]) continue;
254	AliKFParticle jpsi((tracks[i]), (tracks[j]));
255	TLorentzVector jpsiVec = ((vec[i])) + (vec[j]);
256	fInvMass[k]->Fill(jpsi.GetMass());
257	fInvMassVec[k]->Fill(jpsiVec.M());
258	fInvMassDiff[k]->Fill(jpsiVec.M() - jpsi.GetMass());
259
260	if (jpsi.GetMass() > 2.5 && jpsi.GetMass() < 3.5) {
261	Int_t dSM = TMath::Abs(fSM[i] - fSM[j]);
262	if (dSM > 9) dSM = (18-dSM);
263	fAngleSM[k]->Fill(dSM);
264	fPtAngle[k]->Fill(TMath::Hypot(jpsi.GetPx(), jpsi.GetPy()), dSM);
265	}
266
267	}
268	}
269	}
270
271	PostData(0, fOutputContainer);
272	}
273
274	//______________________________________________________________________________
275	void AliTRDqaJPsi::Terminate(Option_t *)
276	{
277	// save histograms
278	fOutputContainer = (TObjArray*)GetOutputData(0);
279
280	TFile *file = new TFile("outJPsi.root", "RECREATE");
281	fOutputContainer->Write();
282
283	file->Flush();
284	file->Close();
285	delete file;
286
287	//for(Int_t i=0; i<fOutputContainer->GetEntries(); i++) {
288	// TObject *obj = fOu
289	// }
290	}
291
292	//______________________________________________________________________________
293
294	void AliTRDqaJPsi::FillHist(AliESDtrack *track, Int_t step) {
295
296	Int_t charge = (track->Charge() > 0) ? 1 : 0;
297	UInt_t status = track->GetStatus();
298	Double_t pt = track->Pt();
299	Double_t pid = track->GetTRDpid(AliPID::kElectron);
300
301	Double_t esdPid[5];
302	track->GetESDpid(esdPid);
303
304	Int_t id = charge * knSteps + step;
305	AliTRDqaAT::FillStatus(fStatus[step], status);
306	fPt[id]->Fill(pt);
307	fPID[id]->Fill(pid);
308	//fPID[id]->Fill(esdPid[AliPID::kElectron]);
309
310	fInSample[fnKFtracks-1][step] = 1;
311	}
312
313	//______________________________________________________________________________
314
315	TLorentzVector AliTRDqaJPsi::CreateVector(AliESDtrack track) {
316
317	TLorentzVector *vec = new TLorentzVector();
318	vec->SetXYZM(track->Px(), track->Py(), track->Pz(), 0);
319	return vec;
320	}
321
322	//______________________________________________________________________________