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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.                                    *
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15
16 /* $Id: AliTRDefficiency.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 <TProfile.h>
30 #include <TPad.h>
31 #include <TLegend.h>
32 #include "TTreeStream.h"
33
34 #include "AliPID.h"
35 #include "AliESDtrack.h"
36 #include "AliTrackReference.h"
37 #include "AliExternalTrackParam.h"
38 #include "AliTracker.h"
39 #include "AliAnalysisManager.h"
40
41 #include "Cal/AliTRDCalPID.h"
42 #include "AliTRDefficiency.h"
43 #include "info/AliTRDtrackInfo.h"
44
45 ClassImp(AliTRDefficiency)
46
47 //____________________________________________________________________
48 AliTRDefficiency::AliTRDefficiency()
49   :AliTRDrecoTask()
50   ,fMissed(NULL)
51 {
52   //
53   // Default constructor
54   //
55   SetNameTitle("TRDefficiency", "TRD barrel tracking efficiency checker");
56 }
57
58 //____________________________________________________________________
59 AliTRDefficiency::AliTRDefficiency(char* name)
60   :AliTRDrecoTask(name, "TRD barrel tracking efficiency checker")
61   ,fMissed(NULL)
62 {
63   //
64   // Default constructor
65   //
66 }
67
68 //____________________________________________________________________
69 AliTRDefficiency::~AliTRDefficiency()
70 {
71   // Destructor
72   if(fMissed){
73     fMissed->Delete();
74     delete fMissed;
75   }
76 }
77
78 //____________________________________________________________________
79 void  AliTRDefficiency::UserCreateOutputObjects()
80 {
81   //
82   // Create output objects
83   //
84
85   OpenFile(1, "RECREATE");
86   const Int_t nbins = AliTRDCalPID::kNMom;
87   Float_t xbins[nbins+1] = {.5, .7, .9, 1.3, 1.7, 2.4, 3.5, 4.5, 5.5, 7., 9., 11.};
88
89   TH1 *h = NULL;
90   fContainer = new TObjArray();
91   for(Int_t is=0; is<AliPID::kSPECIES; is++){
92     fContainer->Add(h = new TProfile(Form("h%s", AliTRDCalPID::GetPartSymb(is)), AliPID::ParticleShortName(is), nbins, xbins));
93     h->SetLineColor(AliTRDCalPID::GetPartColor(is));
94     h->SetMarkerColor(AliTRDCalPID::GetPartColor(is));
95     h->SetMarkerStyle(24);
96   }
97   fContainer->Add(h = new TProfile("h", "", nbins, xbins));
98   h->SetMarkerStyle(7);
99
100
101 //____________________________________________________________________
102 void AliTRDefficiency::UserExec(Option_t *)
103 {
104   //
105   // Do it
106   //
107
108   Int_t labelsacc[10000]; 
109   memset(labelsacc, 0, sizeof(Int_t) * 10000);
110         
111   if(!fMissed){ 
112     fMissed = new TClonesArray("AliTRDtrackInfo", 10);
113     fMissed->SetOwner();
114   }
115
116   Float_t mom;
117   Int_t selection[10000], nselect = 0;
118   ULong_t status; Int_t pidx;
119   Int_t nTRD = 0, nTPC = 0, nMiss = 0;
120   AliTRDtrackInfo     *track = NULL;
121   AliTrackReference     *ref = NULL;
122   AliExternalTrackParam *esd = NULL;
123   for(Int_t itrk=0; itrk<fTracks->GetEntriesFast(); itrk++){
124     track = (AliTRDtrackInfo*)fTracks->UncheckedAt(itrk);
125
126                 if(!track->HasESDtrack()) continue;
127     status = track->GetStatus();
128
129     // missing TPC propagation - interesting for SA
130     if(!(status&AliESDtrack::kTPCout)) continue;
131
132     // missing MC info.
133     if(HasMCdata() && track->GetNTrackRefs() <= 1) continue;
134    
135     nTPC++;
136     selection[nselect++]=itrk;
137     ref  = track->GetTrackRef(0);
138     esd  = track->GetESDinfo()->GetOuterParam();
139     mom  = ref ? ref->P(): esd->P();
140     pidx = AliTRDCalPID::GetPartIndex(track->GetPDG());
141     pidx = TMath::Max(pidx, 0);
142
143     //Int_t n = track->GetNumberOfClusters(); 
144     // where are this tracklets ???
145     //if(ncls0 > ncls1) printf("%3d ESD[%3d] TRD[%3d|%3d]\n", itrk, ncls0, ncls1, n);
146     if(track->GetNumberOfClustersRefit()){ 
147       ((TProfile*)fContainer->At(pidx))->Fill(mom, 1.);
148                         labelsacc[nTRD] = track->GetLabel();
149       nTRD++;
150       continue;
151     }
152
153
154
155     Float_t xmed, xleng;
156     Int_t iref = 1; Bool_t found = kFALSE;
157     while((ref = track->GetTrackRef(iref))){
158       xmed = .5*(ref->LocalX() + track->GetTrackRef(iref-1)->LocalX());
159       xleng= (ref->LocalX() - track->GetTrackRef(iref-1)->LocalX());
160       if(TMath::Abs(xmed - 298.5) < .5 &&
161         TMath::Abs(xleng - 3.7) < .1){ 
162         found = kTRUE;
163         break;
164       }
165       iref++;
166     }
167     if(!found){ 
168       nTPC--;
169       // track missing first layer. Maybe interesting for SA.
170       continue;
171     }
172     nselect--;
173     new ((*fMissed)[nMiss]) AliTRDtrackInfo(*track);
174     nMiss++;
175   }
176   AliDebug(2, Form("%3d Tracks: ESD[%3d] TPC[%3d] TRD[%3d | %5.2f%%] Off[%d]", (Int_t)AliAnalysisManager::GetAnalysisManager()->GetCurrentEntry(), fTracks->GetEntriesFast(), nTPC, nTRD, nTPC ? 1.E2*nTRD/float(nTPC) : 0., fMissed->GetEntriesFast()));
177
178
179   // Find double tracks
180   Float_t threshold = 10.;
181   AliTrackReference *refMiss = NULL;
182   AliExternalTrackParam *op = NULL;
183   AliTRDtrackInfo       *tt = NULL;
184   for(Int_t imiss=0; imiss<nMiss; imiss++){
185     //printf("Searching missing %d ...\n", imiss);
186
187     // get outer param of missed
188     tt = (AliTRDtrackInfo*)fMissed->UncheckedAt(imiss);
189     op = tt->GetESDinfo()->GetOuterParam();
190     Double_t alpha = op->GetAlpha(), cosa = TMath::Cos(alpha), sina = TMath::Sin(alpha);
191
192     Double_t xyz[3], x0, y0, z0, x, y, z, dx, dy, dz, d;
193
194     Bool_t bFOUND = kFALSE;
195     for(Int_t iselect=0; iselect<nselect; iselect++){
196       track = (AliTRDtrackInfo*)fTracks->UncheckedAt(selection[iselect]);
197
198       // check first MC ... if available
199       d = 0;
200       for(Int_t iref=0; iref<track->GetNTrackRefs(); iref++){
201         if(!(ref = track->GetTrackRef(iref))) continue;
202         if((refMiss = tt->GetTrackRef(iref))){
203           dy = ref->LocalY() - refMiss->LocalY();
204           dz = ref->Z() - refMiss->Z();
205         } else {
206           // compare missOP with refTrackRef in LTC
207           x0 = ref->LocalX();
208           op->GetYAt(x0, AliTracker::GetBz(), y0);
209           op->GetZAt(x0, AliTracker::GetBz(), z0);
210           dy = y0 - ref->LocalY();
211           dz = z0 - ref->Z();
212         }
213         d += (dy*dy + dz*dz);
214       }
215       //printf("\td[%d] = %f N[%d]\n", selection[iselect], d, track->GetNTrackRefs());
216       if((track->GetNTrackRefs())){ 
217         d /= track->GetNTrackRefs();
218         if(d < threshold){
219           //printf("\t\tFound %2d in ref[%3d] : d[%f]\n", imiss, selection[iselect], d/track->GetNTrackRefs());
220           bFOUND = kTRUE; break;
221         }
222       }
223
224       // process outer param ... always available
225       // compare missOP with OP in GTC
226       esd = track->GetESDinfo()->GetOuterParam();
227       esd->GetXYZ(xyz);
228       x0 = esd->GetX();
229       op->GetYAt(x0, AliTracker::GetBz(), y0);
230       op->GetZAt(x0, AliTracker::GetBz(), z0);
231       x = x0*cosa - y0*sina;
232       y = x0*sina + y0*cosa;
233       z = z0;
234       dx=xyz[0]-x;
235       dy=xyz[1]-y;
236       dz=xyz[2]-z;
237       d = dx*dx+dy*dy+dz*dz;
238       //printf("\td[%d] = %f op\n", selection[iselect], d);
239       if(d < threshold){
240         //printf("\t\tFound %2d in op[%3d]  : d[%f] dx[%5.2f] dy[%5.2f] dz[%5.2f]\n", imiss, selection[iselect], d, dx, dy, dz);
241         bFOUND = kTRUE; break;
242       }
243     }
244     if(bFOUND) nTPC--;
245     else{ 
246       ref = tt->GetTrackRef(0);
247       mom = ref ? ref->P(): op->P();
248       pidx = AliTRDCalPID::GetPartIndex(tt->GetPDG());
249       pidx = TMath::Max(pidx, 0);
250       ((TProfile*)fContainer->At(pidx))->Fill(mom, 0.);
251       AliDebug(2, Form("  NOT bFOUND Id[%d] Mom[%f]\n", tt->GetTrackId(), mom));
252     }
253   }
254
255   AliDebug(2, Form("%3d Tracks: ESD[%3d] TPC[%3d] TRD[%3d | %5.2f%%] Off[%d]", (Int_t)AliAnalysisManager::GetAnalysisManager()->GetCurrentEntry(), fTracks->GetEntriesFast(), nTPC, nTRD, nTPC ? 1.E2*nTRD/float(nTPC) : 0., fMissed->GetEntriesFast()));
256
257   //fMissed->Delete();
258         // check for double countings
259         Int_t indices[10000]; memset(indices, 0, sizeof(Int_t) * 10000);
260         TMath::Sort(nTRD, labelsacc, indices);
261         if(DebugLevel() > 2){
262         for(Int_t itk = 0; itk < nTRD - 1; itk++)
263                 if(labelsacc[indices[itk]] ==labelsacc[indices[itk + 1]]) printf("Double counted MC track: %d\n", labelsacc[indices[itk]]);
264         }
265   PostData(1, fContainer);
266 }
267
268
269 //____________________________________________________________________
270 Bool_t AliTRDefficiency::GetRefFigure(Int_t ifig)
271 {
272 // Steer reference figures
273
274   if(!gPad){
275     AliWarning("Please provide a canvas to draw results.");
276     return kFALSE;
277   }
278   gPad->SetLogx();
279
280   TLegend *leg(NULL);
281   Bool_t bFIRST(kTRUE);
282   TProfile *h(NULL);
283   switch(ifig){
284   case 0:
285     h = (TProfile*)fContainer->At(AliPID::kSPECIES);
286     for(Int_t is=0; is<AliPID::kSPECIES; is++){
287       h->Add((TProfile*)fContainer->At(is));
288     }
289     h->SetMarkerStyle(24);
290     h->SetMarkerColor(kBlack);
291     h->SetLineColor(kBlack);
292     h->SetTitle("TRD Efficiency integrated");
293     h->SetXTitle("p [GeV/c]");
294     h->GetXaxis()->SetMoreLogLabels();
295     h->SetYTitle("Efficiency");
296     h->GetYaxis()->CenterTitle();
297     h->Draw("e1");
298     break;
299   case 1:
300     bFIRST = kTRUE;
301     for(Int_t is=0; is<AliPID::kSPECIES; is++){
302       if(!(h = (TProfile*)fContainer->At(is))) continue;
303       h->SetMarkerStyle(24);
304       if(bFIRST){
305         h->Draw("e1");
306         h->SetXTitle("p [GeV/c]");
307         h->GetXaxis()->SetMoreLogLabels();
308         h->SetYTitle("Efficiency");
309         h->GetYaxis()->CenterTitle();
310         h->GetYaxis()->SetRangeUser(0.8, 1.05);
311         leg=new TLegend(.7, .2, .98, .6);
312         leg->SetHeader("Species");
313         leg->SetBorderSize(0);
314         leg->SetFillStyle(0);
315         leg->AddEntry(h, h->GetTitle(), "pl");
316       } else {
317         leg->AddEntry(h, h->GetTitle(), "pl");
318         h->Draw("same e1");
319       }
320       bFIRST = kFALSE;
321     }
322     leg->Draw();
323     break;
324   }
325   return kTRUE;
326 }
327
328
329 //____________________________________________________________________
330 Bool_t AliTRDefficiency::PostProcess()
331 {
332   fNRefFigures = HasMCdata() ? 2 : 1; 
333   return kTRUE;
334 }