[u/mrichter/AliRoot.git] / MUON / MUONRecoCheck.C

/**************************************************************************
 * 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.                  *
 **************************************************************************/

// ROOT includes
#include "TClonesArray.h"
#include "TH1.h"
#include "TParticle.h"
#include "TFile.h"

// STEER includes
#include "AliRun.h"
#include "AliHeader.h"
#include "AliMC.h"
#include "AliStack.h"
#include "AliRunLoader.h"

// MUON includes
#include "AliMUON.h"
#include "AliMUONConstants.h"
#include "AliMUONTrack.h"
#include "AliMUONRecoCheck.h"
#include "AliMUONTrackParam.h"

Int_t TrackCheck( Bool_t *compTrack);

void MUONRecoCheck (Int_t nEvent = 1, char * filename="galice.root"){

  // Utility macro to check the muon reconstruction. Reconstructed tracks are compared
  // to reference tracks. The reference tracks are built from AliTrackReference for the
  // hit in chamber (0..9) and from kinematics (TreeK) for the vertex parameters.     
  
  Int_t nTrackReco, nTrackRef;
  AliMUONTrack *trackReco, *trackRef;
  Bool_t *compTrack;
  Bool_t compTrackOK[10];
  Int_t nHitOK = 0;
  Int_t testTrack = 0;	
  Int_t iTrack = 0;
  Int_t indexOK = 0;
  Int_t trackID = 0;
  Double_t sigma2Cut = 16;  // 4 sigmas cut, sigma2Cut = 4*4
  AliMUONTrackParam *trackParam;
  TClonesArray *trackParamAtHit;
  Double_t x1,y1,z1,pX1,pY1,pZ1,p1;
  Double_t x2,y2,z2,pX2,pY2,pZ2,p2;
  TParticle* particle = new TParticle();

  TClonesArray *trackRecoArray = NULL;
  TClonesArray *trackRefArray = NULL;


  // File for histograms and histogram booking
  TFile *histoFile = new TFile("MUONRecoCheck.root", "RECREATE");

  TH1F *hReconstructible = new TH1F("hReconstructible"," Nb of reconstructible tracks ",15,-0.5,14.5);
  TH1F *hReco = new TH1F("hReco"," Nb of reconstructed tracks / evt",15,-0.5,14.5);
  TH1F *hNHitComp = new TH1F("hNHitComp"," Nb of compatible hits / track ",15,-0.5,14.5);
  TH1F *hTestTrack = new TH1F("hTestTrack"," Reconstruction requirement / track",15,-0.5,14.5);
  TH1F *hTrackRefID = new TH1F("hTrackRefID"," track reference ID ",100,-0.5,99.5);
  
  TH1F *hResMomVertex = new TH1F("hMomVertex"," delta P vertex (GeV/c)",100,-10.,10);
  TH1F *hResMomFirstHit = new TH1F("hMomFirstHit"," delta P first hit (GeV/c)",100,-10.,10);


  AliMUONRecoCheck rc(filename);
  AliRunLoader *runLoader = rc.GetRunLoader();

    
  Int_t nevents = runLoader->GetNumberOfEvents();
  
  if (nevents < nEvent) nEvent = nevents;
  
  Int_t ievent;
  Int_t nReconstructibleTracks = 0;
  Int_t nReconstructedTracks = 0;
  Int_t nReconstructibleTracksCheck = 0;

  for (ievent=0; ievent<nEvent; ievent++) {
    if (!(ievent%10)) printf(" **** event # %d  \n",ievent);
    runLoader->GetEvent(ievent);
    rc.ResetTracks();
    rc.MakeTrackRef(); // make reconstructible tracks
//     rc.PrintEvent();

    
    trackRecoArray = rc.GetTrackReco();
    trackRefArray = rc.GetMuonTrackRef();
    
    nTrackRef = trackRefArray->GetEntriesFast();
    nTrackReco = trackRecoArray->GetEntriesFast();

    hReconstructible->Fill(rc.GetNumberOfReconstuctibleTracks());
    hReco->Fill(rc.GetNumberOfRecoTracks());

    nReconstructibleTracks += rc.GetNumberOfReconstuctibleTracks();
    nReconstructedTracks += rc.GetNumberOfRecoTracks();

    for (Int_t index1 = 0; index1 < nTrackRef; index1++) {  
      trackRef = (AliMUONTrack *)trackRefArray->At(index1);

      testTrack = 0;
      indexOK = 0;
      for (Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++) 
	compTrackOK[ch] = kFALSE;
      for (Int_t index2 = 0; index2 < nTrackReco; index2++) {
	trackReco = (AliMUONTrack *)trackRecoArray->At(index2);

	// check if trackRef is compatible with trackReco
	compTrack = trackRef->CompatibleTrack(trackReco,sigma2Cut);

	iTrack = TrackCheck(compTrack);
	
	if (iTrack > testTrack) {
	  nHitOK = 0;
	  for (Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++) {
	    if (compTrack[ch]) nHitOK++;
	    compTrackOK[ch] = compTrack[ch];
	  }
	  testTrack = iTrack;
	  indexOK = index2;
	}
      }

      hTestTrack->Fill(testTrack);
      trackID = trackRef->GetTrackID();
      hTrackRefID->Fill(trackID);

      if (testTrack == 4) {     // tracking requirements verified, track is found
	nReconstructibleTracksCheck++;
	hNHitComp->Fill(nHitOK);
	particle = runLoader->GetHeader()->Stack()->Particle(trackID);
// 	printf(" trackID: %d , PDG code: %d \n",trackID,particle->GetPdgCode());
	trackParam = trackRef->GetTrackParamAtVertex();
	x1 = trackParam->GetNonBendingCoor();
	y1 = trackParam->GetBendingCoor();
	z1 = trackParam->GetZ();
	pX1 = trackParam->Px();
	pY1 = trackParam->Py();
	pZ1 = trackParam->Pz();
	p1  = trackParam->P();
	
// 	printf(" Ref. track at vertex: x,y,z: %f %f %f px,py,pz,p: %f %f %f %f \n",x1,y1,z1,pX1,pY1,pZ1,p1);
	
	trackParam = ((AliMUONTrack *)trackRecoArray->At(indexOK))->GetTrackParamAtVertex();
	x2 = trackParam->GetNonBendingCoor();
	y2 = trackParam->GetBendingCoor();
	z2 = trackParam->GetZ();
	pX2 = trackParam->Px();
	pY2 = trackParam->Py();
	pZ2 = trackParam->Pz();
	p2  = trackParam->P();
// 	printf(" Reconst. track at vertex: x,y,z: %f %f %f px,py,pz: %f %f %f %f \n",x2,y2,z2,pX2,pY2,pZ2,p2);
	
	hResMomVertex->Fill(p2-p1);

 	trackParamAtHit =  trackRef->GetTrackParamAtHit();
	trackParam = (AliMUONTrackParam*) trackParamAtHit->First();
	x1 = trackParam->GetNonBendingCoor();
	y1 = trackParam->GetBendingCoor();
	z1 = trackParam->GetZ();
	pX1 = trackParam->Px();
	pY1 = trackParam->Py();
	pZ1 = trackParam->Pz();
	p1  = trackParam->P();
// 	printf(" Ref. track at 1st hit: x,y,z: %f %f %f px,py,pz: %f %f %f \n",x1,y1,z1,pX1,pY1,pZ1);
	trackParamAtHit =  ((AliMUONTrack *) trackRecoArray->At(indexOK))->GetTrackParamAtHit();
	trackParam = (AliMUONTrackParam*) trackParamAtHit->First();
	x2 = trackParam->GetNonBendingCoor();
	y2 = trackParam->GetBendingCoor();
	z2 = trackParam->GetZ();
	pX2 = trackParam->Px();
	pY2 = trackParam->Py();
	pZ2 = trackParam->Pz();
	p2  = trackParam->P();
// 	printf(" Reconst. track at 1st hit: x,y,z: %f %f %f px,py,pz: %f %f %f \n",x2,y2,z2,pX2,pY2,pZ2);

	hResMomFirstHit->Fill(p2-p1);
	       
      }
    } // end loop track ref.

  } // end loop on event  

  printf(" nb of reconstructible tracks: %d \n", nReconstructibleTracks);
  printf(" nb of reconstructed tracks: %d \n", nReconstructedTracks);
  printf(" nb of reconstructible tracks which are reconstructed: %d \n", nReconstructibleTracksCheck);
  
  histoFile->Write();
  histoFile->Close();
}


Int_t TrackCheck( Bool_t *compTrack)
{
  // Apply reconstruction requirements
  // Return number of validated conditions 
  // If all the tests are verified then TrackCheck = 4 (good track)
  Int_t iTrack = 0;
  Int_t hitsInLastStations = 0;
  
  // apply reconstruction requirements
  if (compTrack[0] || compTrack[1]) iTrack++; // at least one hit in st. 0
  if (compTrack[2] || compTrack[3]) iTrack++; // at least one hit in st. 1
  if (compTrack[4] || compTrack[5]) iTrack++; // at least one hit in st. 2
  for (Int_t ch = 6; ch < AliMUONConstants::NTrackingCh(); ch++) {
    if (compTrack[ch]) hitsInLastStations++; 
  }
  if (hitsInLastStations > 2) iTrack++; // at least 3 hits in st. 3 & 4
  
  return iTrack;

}
Commit	Line	Data
b8dc484b	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	// ROOT includes
	17	#include "TClonesArray.h"
	18	#include "TH1.h"
	19	#include "TParticle.h"
	20	#include "TFile.h"
	21
	22	// STEER includes
	23	#include "AliRun.h"
	24	#include "AliHeader.h"
	25	#include "AliMC.h"
	26	#include "AliStack.h"
	27	#include "AliRunLoader.h"
	28
	29	// MUON includes
	30	#include "AliMUON.h"
	31	#include "AliMUONConstants.h"
	32	#include "AliMUONTrack.h"
	33	#include "AliMUONRecoCheck.h"
	34	#include "AliMUONTrackParam.h"
	35
	36	Int_t TrackCheck( Bool_t *compTrack);
	37
	38	void MUONRecoCheck (Int_t nEvent = 1, char * filename="galice.root"){
	39
	40	// Utility macro to check the muon reconstruction. Reconstructed tracks are compared
	41	// to reference tracks. The reference tracks are built from AliTrackReference for the
	42	// hit in chamber (0..9) and from kinematics (TreeK) for the vertex parameters.
	43
	44	Int_t nTrackReco, nTrackRef;
	45	AliMUONTrack trackReco, trackRef;
	46	Bool_t *compTrack;
	47	Bool_t compTrackOK[10];
	48	Int_t nHitOK = 0;
	49	Int_t testTrack = 0;
	50	Int_t iTrack = 0;
	51	Int_t indexOK = 0;
	52	Int_t trackID = 0;
	53	Double_t sigma2Cut = 16; // 4 sigmas cut, sigma2Cut = 4*4
	54	AliMUONTrackParam *trackParam;
	55	TClonesArray *trackParamAtHit;
	56	Double_t x1,y1,z1,pX1,pY1,pZ1,p1;
	57	Double_t x2,y2,z2,pX2,pY2,pZ2,p2;
	58	TParticle* particle = new TParticle();
	59
	60	TClonesArray *trackRecoArray = NULL;
	61	TClonesArray *trackRefArray = NULL;
	62
	63
	64	// File for histograms and histogram booking
65	TFile *histoFile = new TFile("MUONRecoCheck.root", "RECREATE");
66
67	TH1F *hReconstructible = new TH1F("hReconstructible"," Nb of reconstructible tracks ",15,-0.5,14.5);
68	TH1F *hReco = new TH1F("hReco"," Nb of reconstructed tracks / evt",15,-0.5,14.5);
69	TH1F *hNHitComp = new TH1F("hNHitComp"," Nb of compatible hits / track ",15,-0.5,14.5);
70	TH1F *hTestTrack = new TH1F("hTestTrack"," Reconstruction requirement / track",15,-0.5,14.5);
71	TH1F *hTrackRefID = new TH1F("hTrackRefID"," track reference ID ",100,-0.5,99.5);
72
73	TH1F *hResMomVertex = new TH1F("hMomVertex"," delta P vertex (GeV/c)",100,-10.,10);
74	TH1F *hResMomFirstHit = new TH1F("hMomFirstHit"," delta P first hit (GeV/c)",100,-10.,10);
75
76
77
78	AliMUONRecoCheck rc(filename);
79	AliRunLoader *runLoader = rc.GetRunLoader();
80
81
82	Int_t nevents = runLoader->GetNumberOfEvents();
83
84	if (nevents < nEvent) nEvent = nevents;
85
86	Int_t ievent;
87	Int_t nReconstructibleTracks = 0;
88	Int_t nReconstructedTracks = 0;
89	Int_t nReconstructibleTracksCheck = 0;
90
91	for (ievent=0; ievent<nEvent; ievent++) {
92	if (!(ievent%10)) printf(" **** event # %d \n",ievent);
93	runLoader->GetEvent(ievent);
94	rc.ResetTracks();
95	rc.MakeTrackRef(); // make reconstructible tracks
96	// rc.PrintEvent();
97
98
99	trackRecoArray = rc.GetTrackReco();
100	trackRefArray = rc.GetMuonTrackRef();
101
102	nTrackRef = trackRefArray->GetEntriesFast();
103	nTrackReco = trackRecoArray->GetEntriesFast();
104
105	hReconstructible->Fill(rc.GetNumberOfReconstuctibleTracks());
106	hReco->Fill(rc.GetNumberOfRecoTracks());
107
108	nReconstructibleTracks += rc.GetNumberOfReconstuctibleTracks();
109	nReconstructedTracks += rc.GetNumberOfRecoTracks();
110
111	for (Int_t index1 = 0; index1 < nTrackRef; index1++) {
112	trackRef = (AliMUONTrack *)trackRefArray->At(index1);
113
114	testTrack = 0;
115	indexOK = 0;
116	for (Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++)
117	compTrackOK[ch] = kFALSE;
118	for (Int_t index2 = 0; index2 < nTrackReco; index2++) {
119	trackReco = (AliMUONTrack *)trackRecoArray->At(index2);
120
121	// check if trackRef is compatible with trackReco
122	compTrack = trackRef->CompatibleTrack(trackReco,sigma2Cut);
123
124	iTrack = TrackCheck(compTrack);
125
126	if (iTrack > testTrack) {
127	nHitOK = 0;
128	for (Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ch++) {
129	if (compTrack[ch]) nHitOK++;
130	compTrackOK[ch] = compTrack[ch];
131	}
132	testTrack = iTrack;
133	indexOK = index2;
134	}
135	}
136
137	hTestTrack->Fill(testTrack);
138	trackID = trackRef->GetTrackID();
139	hTrackRefID->Fill(trackID);
140
141	if (testTrack == 4) { // tracking requirements verified, track is found
142	nReconstructibleTracksCheck++;
143	hNHitComp->Fill(nHitOK);
144	particle = runLoader->GetHeader()->Stack()->Particle(trackID);
145	// printf(" trackID: %d , PDG code: %d \n",trackID,particle->GetPdgCode());
146	trackParam = trackRef->GetTrackParamAtVertex();
147	x1 = trackParam->GetNonBendingCoor();
148	y1 = trackParam->GetBendingCoor();
149	z1 = trackParam->GetZ();
150	pX1 = trackParam->Px();
151	pY1 = trackParam->Py();
152	pZ1 = trackParam->Pz();
153	p1 = trackParam->P();
154
155	// printf(" Ref. track at vertex: x,y,z: %f %f %f px,py,pz,p: %f %f %f %f \n",x1,y1,z1,pX1,pY1,pZ1,p1);
156
157	trackParam = ((AliMUONTrack *)trackRecoArray->At(indexOK))->GetTrackParamAtVertex();
158	x2 = trackParam->GetNonBendingCoor();
159	y2 = trackParam->GetBendingCoor();
160	z2 = trackParam->GetZ();
161	pX2 = trackParam->Px();
162	pY2 = trackParam->Py();
163	pZ2 = trackParam->Pz();
164	p2 = trackParam->P();
165	// printf(" Reconst. track at vertex: x,y,z: %f %f %f px,py,pz: %f %f %f %f \n",x2,y2,z2,pX2,pY2,pZ2,p2);
166
167	hResMomVertex->Fill(p2-p1);
168
169	trackParamAtHit = trackRef->GetTrackParamAtHit();
170	trackParam = (AliMUONTrackParam*) trackParamAtHit->First();
171	x1 = trackParam->GetNonBendingCoor();
172	y1 = trackParam->GetBendingCoor();
173	z1 = trackParam->GetZ();
174	pX1 = trackParam->Px();
175	pY1 = trackParam->Py();
176	pZ1 = trackParam->Pz();
177	p1 = trackParam->P();
178	// printf(" Ref. track at 1st hit: x,y,z: %f %f %f px,py,pz: %f %f %f \n",x1,y1,z1,pX1,pY1,pZ1);
179	trackParamAtHit = ((AliMUONTrack *) trackRecoArray->At(indexOK))->GetTrackParamAtHit();
180	trackParam = (AliMUONTrackParam*) trackParamAtHit->First();
181	x2 = trackParam->GetNonBendingCoor();
182	y2 = trackParam->GetBendingCoor();
183	z2 = trackParam->GetZ();
184	pX2 = trackParam->Px();
185	pY2 = trackParam->Py();
186	pZ2 = trackParam->Pz();
187	p2 = trackParam->P();
188	// printf(" Reconst. track at 1st hit: x,y,z: %f %f %f px,py,pz: %f %f %f \n",x2,y2,z2,pX2,pY2,pZ2);
189
190	hResMomFirstHit->Fill(p2-p1);
191
192	}
193	} // end loop track ref.
194
195	} // end loop on event
196
197	printf(" nb of reconstructible tracks: %d \n", nReconstructibleTracks);
198	printf(" nb of reconstructed tracks: %d \n", nReconstructedTracks);
199	printf(" nb of reconstructible tracks which are reconstructed: %d \n", nReconstructibleTracksCheck);
200
201	histoFile->Write();
202	histoFile->Close();
203	}
204
205
206	Int_t TrackCheck( Bool_t *compTrack)
207	{
208	// Apply reconstruction requirements
209	// Return number of validated conditions
210	// If all the tests are verified then TrackCheck = 4 (good track)
211	Int_t iTrack = 0;
212	Int_t hitsInLastStations = 0;
213
214	// apply reconstruction requirements
215	if (compTrack[0] \|\| compTrack[1]) iTrack++; // at least one hit in st. 0
216	if (compTrack[2] \|\| compTrack[3]) iTrack++; // at least one hit in st. 1
217	if (compTrack[4] \|\| compTrack[5]) iTrack++; // at least one hit in st. 2
218	for (Int_t ch = 6; ch < AliMUONConstants::NTrackingCh(); ch++) {
219	if (compTrack[ch]) hitsInLastStations++;
220	}
221	if (hitsInLastStations > 2) iTrack++; // at least 3 hits in st. 3 & 4
222
223	return iTrack;
224
225	}
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