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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 /* $Id: AliTRDtrackInfoGen.cxx 27496 2008-07-22 08:35:45Z cblume $ */
17
18 ////////////////////////////////////////////////////////////////////////////
19 //                                                                        //
20 //  Reconstruction QA                                                     //
21 //                                                                        //
22 //  Authors:                                                              //
23 //    Markus Fasel <M.Fasel@gsi.de>                                       //
24 //                                                                        //
25 ////////////////////////////////////////////////////////////////////////////
26
27 #include <TClonesArray.h>
28 #include <TObjArray.h>
29 #include <TObject.h>
30 #include <TH1F.h>
31 #include <TFile.h>
32 #include <TTree.h>
33 #include <TROOT.h>
34 #include <TChain.h>
35 #include <TParticle.h>
36
37 #include "AliLog.h"
38 #include "AliAnalysisManager.h"
39 #include "AliESDEvent.h"
40 #include "AliMCEvent.h"
41 #include "AliESDInputHandler.h"
42 #include "AliMCEventHandler.h"
43
44 #include "AliESDfriend.h"
45 #include "AliESDfriendTrack.h"
46 #include "AliESDtrack.h"
47 #include "AliMCParticle.h"
48 #include "AliStack.h"
49 #include "AliTRDtrackV1.h"
50 #include "AliTrackReference.h"
51 #include "AliTRDgeometry.h"
52 #include "TTreeStream.h"
53
54 #include <cstdio>
55 #include <cstring>
56
57 #include "AliTRDtrackInfoGen.h"
58 #include "AliTRDtrackInfo/AliTRDtrackInfo.h"
59
60 ClassImp(AliTRDtrackInfoGen)
61
62
63 //____________________________________________________________________
64 AliTRDtrackInfoGen::AliTRDtrackInfoGen():
65   AliTRDrecoTask("InfoGen", "Track List Generator")
66   ,fESD(0x0)
67   ,fMC(0x0)
68   ,fESDfriend(0x0)
69   ,fTrackInfo(0x0)
70 {
71   //
72   // Default constructor
73   //
74
75   DefineInput(0, TChain::Class());
76   DefineOutput(0, TObjArray::Class());
77   //DefineOutput(1, TTree::Class());
78 }
79
80 //____________________________________________________________________
81 AliTRDtrackInfoGen::~AliTRDtrackInfoGen()
82 {
83   if(fTrackInfo) delete fTrackInfo;
84 }
85
86 //____________________________________________________________________
87 void AliTRDtrackInfoGen::ConnectInputData(Option_t *)
88 {
89   //
90   // Link the Input Data
91   //
92   TTree *tree = dynamic_cast<TChain*>(GetInputData(0));
93   if(!tree){
94     printf("ERROR - ESD event not found");
95   } else {
96     tree->SetBranchStatus("Tracks", 1);
97     tree->SetBranchStatus("ESDfriend*",1);
98   }
99
100   AliESDInputHandler *esdH = dynamic_cast<AliESDInputHandler*>(AliAnalysisManager::GetAnalysisManager()->GetInputEventHandler());
101   if(!esdH){
102     printf("ERROR - ESD input handler not found");
103   } else {
104     fESD = esdH->GetEvent();
105     if(!fESD){
106       printf("ERROR - ESD event not found");
107     } else {
108       esdH->SetActiveBranches("ESDfriend*");
109       fESDfriend = (AliESDfriend *)fESD->FindListObject("AliESDfriend");
110     }
111   }
112   if(HasMCdata()){
113     AliMCEventHandler *mcH = dynamic_cast<AliMCEventHandler*>(AliAnalysisManager::GetAnalysisManager()->GetMCtruthEventHandler());
114     if(!mcH){ 
115       AliError("MC input handler not found");
116     } else {
117       fMC = mcH->MCEvent();
118     }
119   }
120 }
121
122 //____________________________________________________________________
123 void AliTRDtrackInfoGen::CreateOutputObjects()
124 {       
125   //
126   // Create Output Containers (TObjectArray containing 1D histograms)
127   //
128   fTrackInfo = new AliTRDtrackInfo();
129   fContainer = new TObjArray(1000);
130
131 /*  OpenFile(1, "RECREATE");
132   fTree = new TTree("trd", "extract of the TRD detector");
133   fTree->Branch("info",  &fTrackInfo);
134   printf("output tree build in %s\n", fTree->GetDirectory()->GetName());*/
135 }
136
137 //____________________________________________________________________
138 void AliTRDtrackInfoGen::Exec(Option_t *){
139   //
140   // Run the Analysis
141   //
142   if(!fESD){
143     puts("Error: ESD not found");
144     return;
145   }
146   if(!fESDfriend){
147     puts("Error: ESD friend not found");
148     return;
149   }
150   if(HasMCdata() && !fMC){
151     puts("Error: Monte Carlo Event not available");
152     return;
153   }
154   fContainer->Delete();
155   fESD->SetESDfriend(fESDfriend);
156   
157   Bool_t *trackMap = 0x0;
158   AliStack * mStack = 0x0;
159   if(HasMCdata()){
160     mStack = fMC->Stack();
161     if(!mStack){
162       puts("Error: Cannot get the Monte Carlo Stack");
163       return;
164     }
165     trackMap = new Bool_t[fMC->GetNumberOfTracks()];
166     memset(trackMap, 0, sizeof(Bool_t) * fMC->GetNumberOfTracks());
167   }
168   
169   Int_t nTRD = 0, nTPC = 0, nclsTrklt;
170   Int_t nTracks = fESD->GetNumberOfTracks();
171   if(fDebugLevel>=1){ 
172     printf("%3d Tracks: ESD[%d] MC[%d]\n", (Int_t)AliAnalysisManager::GetAnalysisManager()->GetCurrentEntry(), nTracks, HasMCdata() ? mStack->GetNtrack() : 0);
173   }
174   AliESDtrack *esdTrack = 0x0;
175   AliESDfriendTrack *esdFriendTrack = 0x0;
176   TObject *calObject = 0x0;
177   AliTRDtrackV1 *track = 0x0;
178   for(Int_t itrk = 0; itrk < nTracks; itrk++){
179     esdTrack = fESD->GetTrack(itrk);
180     if(fDebugLevel>=2) printf("\n%3d ITS[%d] TPC[%d] TRD[%d]\n", itrk, esdTrack->GetNcls(0), esdTrack->GetNcls(1), esdTrack->GetNcls(2));
181     if(esdTrack->GetNcls(1)) nTPC++;
182     if(esdTrack->GetNcls(2)) nTRD++;
183
184     // look at esternal track param
185     const AliExternalTrackParam *op = esdTrack->GetOuterParam();
186     Double_t xyz[3];
187     if(op){
188         op->GetXYZ(xyz);
189         op->Global2LocalPosition(xyz, op->GetAlpha());
190         if(fDebugLevel>=2) printf("op @ X[%7.3f]\n", xyz[0]);
191     }
192 /*              if(xyz[0] < 270.){ 
193         printf("TPC track missing\n");
194     } else { */
195 //                      op->GetXYZAt(ref->LocalX(), AliTracker::GetBz(), xyz);
196 //                      op->Global2LocalPosition(xyz, op->GetAlpha());
197 //                      dy = ref->LocalY()- xyz[1];
198 //                      dz = ref->Z() - xyz[2];
199 //      }
200
201     // read MC info
202     Int_t fPdg = -1;
203     Int_t label = -1;
204     if(HasMCdata()){
205       label = esdTrack->GetLabel();
206       if(label < fMC->GetNumberOfTracks()) trackMap[TMath::Abs(label)] = kTRUE; // register the track
207       //if (TMath::Abs(label) > mStack->GetNtrack()) continue; 
208       AliMCParticle *mcParticle = fMC->GetTrack(TMath::Abs(label));
209       fPdg = mcParticle->Particle()->GetPdgCode();
210       Int_t nRefs = mcParticle->GetNumberOfTrackReferences();
211       Int_t iref = 0; AliTrackReference *ref = 0x0; 
212       while(iref<nRefs){
213         ref = mcParticle->GetTrackReference(iref);
214         if(ref->LocalX() > 250.) break;
215         //printf("\ttrackRef[%2d] @ %7.3f\n", iref, ref->LocalX());
216         iref++;
217       }
218       if(iref == nRefs){
219 //                      if(!esdTrack->GetNcls(2)) continue;
220 /*                      printf("No TRD Track References in the Track [%d] I\n", itrk);
221         printf("Label = %d ITS[%d] TPC[%d] TRD[%d]\n", label, esdTrack->GetITSLabel(), esdTrack->GetTPCLabel(), esdTrack->GetTRDLabel());
222         Int_t kref = 0;
223         while(kref<nRefs){
224           ref = mcParticle->GetTrackReference(kref);
225           printf("\ttrackRef[%2d] @ %7.3f\n", kref, ref->LocalX());
226           kref++;
227         }*/
228       }
229
230       new(fTrackInfo) AliTRDtrackInfo(fPdg);
231       fTrackInfo->SetPrimary(mcParticle->Particle()->IsPrimary());
232       Int_t jref = iref;//, kref = 0;
233       while(jref<nRefs){
234         ref = mcParticle->GetTrackReference(jref);
235         if(ref->LocalX() > 370.) break;
236         if(fDebugLevel>=3) printf("\ttrackRef[%2d (%2d)] @ %7.3f OK\n", jref-iref, jref, ref->LocalX());
237         fTrackInfo->AddTrackRef(ref);
238         jref++;
239       }
240       if(!fTrackInfo->GetNTrackRefs()){ 
241           //if(!esdTrack->GetNcls(2)) continue;
242   /*            printf("No TRD Track References in the Track [%d] II\n", itrk);
243             printf("Label = %d ITS[%d] TPC[%d] TRD[%d]\n", label, esdTrack->GetITSLabel(), esdTrack->GetTPCLabel(), esdTrack-   >GetTRDLabel());
244             Int_t kref = 0;
245             while(kref<nRefs){
246               ref = mcParticle->GetTrackReference(kref);
247               printf("\ttrackRef[%2d] @ %7.3f\n", kref, ref->LocalX());
248               kref++;
249             }*/
250       }
251       if(fDebugLevel>=2) printf("NtrackRefs[%d(%d)]\n", fTrackInfo->GetNTrackRefs(), nRefs);
252     } else {
253       new (fTrackInfo) AliTRDtrackInfo(fPdg);
254     }
255
256     // copy some relevant info to TRD track info
257     fTrackInfo->SetStatus(esdTrack->GetStatus());
258     fTrackInfo->SetTrackId(esdTrack->GetID());
259     fTrackInfo->SetLabel(label);
260     fTrackInfo->SetNumberOfClustersRefit(esdTrack->GetNcls(2));
261     fTrackInfo->SetFiredTriggerClass(fESD->GetFiredTriggerClasses());
262     fTrackInfo->SetTriggerCluster(fESD->GetHeader()->GetTriggerCluster());
263     nclsTrklt = 0;
264   
265
266     // read REC info
267     esdFriendTrack = fESDfriend->GetTrack(itrk);
268     if(esdFriendTrack){
269       Int_t icalib = 0;
270       while((calObject = esdFriendTrack->GetCalibObject(icalib++))){
271         if(strcmp(calObject->IsA()->GetName(),"AliTRDtrackV1") != 0) continue; // Look for the TRDtrack
272         track = dynamic_cast<AliTRDtrackV1*>(calObject);
273         //nTRD++;
274         if(!esdTrack->GetNcls(2)){
275           printf("No TRD clusters but track\n");
276           nTRD++;  
277         }  
278         if(!track) continue;
279         if(fDebugLevel>=3) printf("TRD track OK\n");
280         fTrackInfo->SetTRDtrack(track);
281         break;
282       }
283       if(fDebugLevel>=2) printf("Ntracklets[%d]\n", fTrackInfo->GetNTracklets());
284     } else if(fDebugLevel>=2) printf("No ESD friends\n");
285     if(op) fTrackInfo->SetOuterParam(op);
286
287     if(fDebugLevel >= 2){
288       Int_t ncls = esdTrack->GetNcls(2);
289       nclsTrklt = fTrackInfo->GetNumberOfClusters();
290       (*fDebugStream) << "trackInfo"
291       << "ncls="       << ncls
292       << "Ncls="       << nclsTrklt
293       << "TrackInfo.=" << fTrackInfo
294       << "\n";
295     }
296   
297     fContainer->Add(new AliTRDtrackInfo(*fTrackInfo));
298     fTrackInfo->Delete("");
299   }
300   if(fDebugLevel>=1) printf("%3d Tracks: TPC[%d] TRD[%d]\n", (Int_t)AliAnalysisManager::GetAnalysisManager()->GetCurrentEntry(), nTPC, nTRD);
301
302   // Insert also MC tracks which are passing TRD where the track is not reconstructed
303   if(HasMCdata()){
304     if(fDebugLevel > 10){
305       printf("Output of the MC track map:\n");
306       for(Int_t itk = 0; itk < fMC->GetNumberOfTracks();  itk++)
307         printf("trackMap[%d] = %s\n", itk, trackMap[itk] == kTRUE ? "TRUE" : "kFALSE");
308     }
309   
310     for(Int_t itk = 0; itk < fMC->GetNumberOfTracks(); itk++){
311       if(fDebugLevel >=2 ) printf("Number of MC tracks: %d\n", fMC->GetNumberOfTracks());
312       if(trackMap[itk]) continue;
313       AliMCParticle *mcParticle = fMC->GetTrack(TMath::Abs(itk));
314       Int_t fPdg = mcParticle->Particle()->GetPdgCode();
315       Int_t nRefs = mcParticle->GetNumberOfTrackReferences();
316       Int_t iref = 0; AliTrackReference *ref = 0x0; 
317       Int_t nRefsTRD = 0;
318       new(fTrackInfo) AliTRDtrackInfo(fPdg);
319       while(iref<nRefs){
320         ref = mcParticle->GetTrackReference(iref);
321         if(fDebugLevel > 3) printf("\ttrackRef[%2d] @ %7.3f", iref, ref->LocalX());
322         if(ref->LocalX() > 250. && ref->LocalX() < 370.){
323           if(fDebugLevel > 3) printf(" OK\n");
324           fTrackInfo->AddTrackRef(ref);
325           nRefsTRD++;
326         }
327         else
328           if(fDebugLevel > 3) printf("\n");
329         iref++;
330       }
331       if(!nRefsTRD){
332         // In this stage we at least require 1 hit inside TRD. What will be done with this tracks is a task for the 
333         // analysis job
334         fTrackInfo->Delete("");
335         continue;
336       }
337       fTrackInfo->SetPrimary(mcParticle->Particle()->IsPrimary());
338       fTrackInfo->SetLabel(itk);
339       if(fDebugLevel >= 1){
340         Int_t ncls = esdTrack->GetNcls(2);
341         (*fDebugStream) << "trackInfo"
342         << "ntrackRefs=" << ncls
343         << "TrackInfo.=" << fTrackInfo
344         << "\n";
345       }
346       if(fDebugLevel > 2)printf("Registering rejected MC track with label %d\n", itk);
347       fContainer->Add(new AliTRDtrackInfo(*fTrackInfo));
348       fTrackInfo->Delete("");
349     }
350     delete[] trackMap;
351   }
352   PostData(0, fContainer);
353 }
354
355
356 //____________________________________________________________________
357 void AliTRDtrackInfoGen::Terminate(Option_t *)
358 {
359   //
360   // Stays empty because we are only interested in the tree
361   //
362
363   if(fDebugLevel>=1) printf("Terminate:\n");
364   //TFile *f =((TFile*)gROOT->FindObject("TRD.TrackInfo.root"));
365   //f->cd(); f->Write(); f->Close();
366
367   if(fDebugStream){ 
368     delete fDebugStream;
369     fDebugStream = 0x0;
370   }
371 }