1 /****************************************************************************
2 * Very important, delicate and rather obscure macro. *
4 * Creates list of "trackable" tracks, *
5 * calculates efficiency, resolutions etc. *
6 * There is a possibility to run this macro over several events. *
8 * Origin: I.Belikov, CERN, Jouri.Belikov@cern.ch *
9 * with several nice improvements by: M.Ivanov, GSI, m.ivanov@gsi.de *
10 ****************************************************************************/
12 #if !defined(__CINT__) || defined(__MAKECINT__)
15 #include <Riostream.h>
19 #include <TParticle.h>
24 #include <TBenchmark.h>
30 #include "AliHeader.h"
31 #include "AliTrackReference.h"
32 #include "AliRunLoader.h"
37 #include "AliSimDigits.h"
39 #include "AliTPCParamSR.h"
40 #include "AliTPCClustersArray.h"
41 #include "AliTPCClustersRow.h"
42 #include "AliTPCcluster.h"
43 #include "AliTPCLoader.h"
44 #include "AliConfig.h"
54 Int_t good_tracks_tpc(GoodTrackTPC *gt, const Int_t max,
55 const char* evfoldname=AliConfig::GetDefaultEventFolderName());
57 extern AliRun *gAlice;
58 extern TBenchmark *gBenchmark;
61 Int_t AliTPCComparison(Float_t ptcutl=0.2, Float_t ptcuth=10., const Char_t *dir=".") {
62 gBenchmark->Start("AliTPCComparison");
64 ::Info("AliTPCComparison.C","Doing comparison...");
67 delete gAlice->GetRunLoader();
68 delete gAlice;//if everything was OK here it is already NULL
73 sprintf(fname,"%s/galice.root",dir);
75 AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
77 ::Fatal("AliTPCComparison.C","Can't start session !");
80 /* Generate a list of "good" tracks */
81 const Int_t MAX=20000;
84 sprintf(fname,"%s/good_tracks_tpc",dir);
87 ::Info("AliTPCComparison.C","Reading good tracks...");
88 while (in>>gt[ngood].lab>>gt[ngood].code>>
89 gt[ngood].px>>gt[ngood].py>>gt[ngood].pz>>
90 gt[ngood].x >>gt[ngood].y >>gt[ngood].z) {
93 ::Warning("AliTPCComparison.C","Too many good tracks !");
98 ::Fatal("AliTPCComparison.C","Read error (good_tracks_tpc) !");
101 ("AliTPCComparison","Marking good tracks (this will take a while)...");
102 ngood=good_tracks_tpc(gt,MAX,"COMPARISON");
105 for (Int_t ngd=0; ngd<ngood; ngd++)
106 out<<gt[ngd].lab<<' '<<gt[ngd].code<<' '<<
107 gt[ngd].px<<' '<<gt[ngd].py<<' '<<gt[ngd].pz<<' '<<
108 gt[ngd].x <<' '<<gt[ngd].y <<' '<<gt[ngd].z <<endl;
110 ::Fatal("AliTPCComparison.C","Can not open file (good_tracks_tpc) !");
117 sprintf(fname,"%s/AliESDs.root",dir);
118 TFile *ef=TFile::Open(fname);
119 if ((!ef)||(!ef->IsOpen())) {
120 sprintf(fname,"%s/AliESDtpc.root",dir);
121 ef=TFile::Open(fname);
122 if ((!ef)||(!ef->IsOpen()))
123 ::Fatal("AliTPCComparison.C","Can't open AliESDtpc.root !");
126 TIter next(ef->GetListOfKeys());
127 if ((key=(TKey*)next())!=0) event=(AliESD*)key->ReadObj();
130 Int_t nentr=event->GetNumberOfTracks();
132 TH1F *hp=(TH1F*)gROOT->FindObject("hp");
133 if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.);
136 TH1F *hl=(TH1F*)gROOT->FindObject("hl");
137 if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20);
140 TH1F *hpt=(TH1F*)gROOT->FindObject("hpt");
141 if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
142 hpt->SetFillColor(2);
144 TH1F *hmpt=(TH1F*)gROOT->FindObject("hmpt");
146 hmpt=new TH1F("hmpt","Relative Pt resolution (pt>4GeV/c)",30,-60,60);
147 hmpt->SetFillColor(6);
151 TH1F *hgood=(TH1F*)gROOT->FindObject("hgood");
152 if (!hgood) hgood=new TH1F("hgood","Good tracks",30,0.2,6.1);
154 TH1F *hfound=(TH1F*)gROOT->FindObject("hfound");
155 if (!hfound) hfound=new TH1F("hfound","Found tracks",30,0.2,6.1);
157 TH1F *hfake=(TH1F*)gROOT->FindObject("hfake");
158 if (!hfake) hfake=new TH1F("hfake","Fake tracks",30,0.2,6.1);
160 TH1F *hg=(TH1F*)gROOT->FindObject("hg");
161 if (!hg) hg=new TH1F("hg","Efficiency for good tracks",30,0.2,6.1);
162 hg->SetLineColor(4); hg->SetLineWidth(2);
164 TH1F *hf=(TH1F*)gROOT->FindObject("hf");
165 if (!hf) hf=new TH1F("hf","Efficiency for fake tracks",30,0.2,6.1);
166 hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);
168 TH1F *he=(TH1F*)gROOT->FindObject("he");
170 he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,100.);
172 TH2F *hep=(TH2F*)gROOT->FindObject("hep");
173 if (!hep) hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,400.);
174 hep->SetMarkerStyle(8);
175 hep->SetMarkerSize(0.4);
179 Int_t track_notfound[MAX], itrack_notfound=0;
180 Int_t track_fake[MAX], itrack_fake=0;
181 Int_t track_multifound[MAX], track_multifound_n[MAX], itrack_multifound=0;
185 Int_t lab=gt[ngood].lab,tlab=-1;
187 TMath::Sqrt(gt[ngood].px*gt[ngood].px + gt[ngood].py*gt[ngood].py);
189 if (ptg<1e-33) continue; // for those not crossing 0 pad row
190 if (ptg<ptcutl) continue;
191 if (ptg>ptcuth) continue;
194 AliESDtrack *track=0;
195 for (i=0; i<nentr; i++) {
196 track=event->GetTrack(i);
197 tlab=track->GetTPCLabel();
198 if (lab==TMath::Abs(tlab)) break;
201 track_notfound[itrack_notfound++]=lab;
205 //MI change - addition
208 AliESDtrack * mitrack;
209 for (mi=0; mi<nentr; mi++) {
210 mitrack=event->GetTrack(mi);
211 if (lab==TMath::Abs(mitrack->GetTPCLabel())) micount++;
214 track_multifound[itrack_multifound]=lab;
215 track_multifound_n[itrack_multifound]=micount;
218 if ((track->GetStatus()&AliESDtrack::kTPCrefit)==0) continue;
219 if (lab==tlab) hfound->Fill(ptg);
221 track_fake[itrack_fake++]=lab;
225 Double_t pxpypz[3]; track->GetInnerPxPyPz(pxpypz);
226 Float_t phi=TMath::ATan2(pxpypz[1],pxpypz[0]);
227 if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
228 if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
229 Double_t pt=TMath::Sqrt(pxpypz[0]*pxpypz[0]+pxpypz[1]*pxpypz[1]);
230 Float_t lam=TMath::ATan2(pxpypz[2],pt);
233 if (TMath::Abs(gt[ngood].code)==11 && ptg>4.) {
234 hmpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
236 Float_t phig=TMath::ATan2(gt[ngood].py,gt[ngood].px);
237 hp->Fill((phi - phig)*1000.);
239 Float_t lamg=TMath::ATan2(gt[ngood].pz,ptg);
240 hl->Fill((lam - lamg)*1000.);
242 hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
245 Float_t mom=pt/TMath::Cos(lam);
246 Float_t dedx=track->GetTPCsignal();
247 hep->Fill(mom,dedx,1.);
248 if (TMath::Abs(gt[ngood].code)==211)
249 if (mom>0.4 && mom<0.5) {
255 cout<<"\nList of Not found tracks :\n";
256 for ( i = 0; i< itrack_notfound; i++){
257 cout<<track_notfound[i]<<"\t";
258 if ((i%5)==4) cout<<"\n";
260 cout<<"\nList of fake tracks :\n";
261 for ( i = 0; i< itrack_fake; i++){
262 cout<<track_fake[i]<<"\t";
263 if ((i%5)==4) cout<<"\n";
265 cout<<"\nList of multiple found tracks :\n";
266 for ( i=0; i<itrack_multifound; i++) {
267 cout<<"id. "<<track_multifound[i]
268 <<" found - "<<track_multifound_n[i]<<"times\n";
271 Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
272 if (ng!=0) cerr<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
273 cout<<"Total number of found tracks ="<<nentr<<endl;
274 cout<<"Total number of \"good\" tracks ="
275 <<mingood<<" (selected for comparison: "<<ng<<')'<<endl<<endl;
278 gStyle->SetOptStat(111110);
279 gStyle->SetOptFit(1);
281 TCanvas *c1=new TCanvas("c1","",0,0,700,850);
285 TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
286 p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10);
287 hp->SetFillColor(4); hp->SetXTitle("(mrad)");
288 if (hp->GetEntries()<minc) hp->Draw(); else hp->Fit("gaus"); c1->cd();
290 TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw();
291 p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
292 hl->SetXTitle("(mrad)");
293 if (hl->GetEntries()<minc) hl->Draw(); else hl->Fit("gaus"); c1->cd();
295 TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
296 p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10);
297 hpt->SetXTitle("(%)");
298 if (hpt->GetEntries()<minc) hpt->Draw(); else hpt->Fit("gaus"); c1->cd();
300 TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
301 p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
302 hmpt->SetXTitle("(%)");
303 if (hmpt->GetEntries()<minc) hmpt->Draw(); else hmpt->Fit("gaus"); c1->cd();
305 TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd();
306 p5->SetFillColor(41); p5->SetFrameFillColor(10);
307 hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
308 hg->Divide(hfound,hgood,1,1.,"b");
309 hf->Divide(hfake,hgood,1,1.,"b");
311 hg->SetYTitle("Tracking efficiency");
312 hg->SetXTitle("Pt (GeV/c)");
315 TLine *line1 = new TLine(0.1,1.0,6.1,1.0); line1->SetLineStyle(4);
317 TLine *line2 = new TLine(0.1,0.9,6.1,0.9); line2->SetLineStyle(4);
321 hf->SetFillStyle(3013);
324 hf->Draw("histsame");
325 TText *text = new TText(0.461176,0.248448,"Fake tracks");
326 text->SetTextSize(0.05);
328 text = new TText(0.453919,1.11408,"Good tracks");
329 text->SetTextSize(0.05);
334 TCanvas *c2=new TCanvas("c2","",320,32,530,590);
336 TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
337 p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10);
338 he->SetFillColor(2); he->SetFillStyle(3005);
339 he->SetXTitle("Arbitrary Units");
340 if (he->GetEntries()<minc) he->Draw(); else he->Fit("gaus"); c2->cd();
342 TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw();
343 p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
344 hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)");
345 hep->Draw(); c1->cd();
347 gBenchmark->Stop("AliTPCComparison");
348 gBenchmark->Show("AliTPCComparison");
350 TFile fc("AliTPCComparison.root","RECREATE");
361 good_tracks_tpc(GoodTrackTPC *gt, const Int_t max, const char* evfoldname) {
364 AliRunLoader *rl = AliRunLoader::GetRunLoader(evfoldname);
366 ::Fatal("AliTPCComparison.C::good_tracks_tpc",
367 "Can not find Run Loader in Folder Named %s",
370 AliTPCLoader *tpcl = (AliTPCLoader *)rl->GetLoader("TPCLoader");
372 ::Fatal("AliTPCHits2Digits.C","Can not find TPCLoader !");
377 AliTPC *TPC=(AliTPC*)rl->GetAliRun()->GetDetector("TPC");
378 Int_t ver = TPC->IsVersion();
379 cerr<<"TPC version "<<ver<<" has been found !\n";
382 AliTPCParamSR *digp=(AliTPCParamSR*)gDirectory->Get("75x40_100x60_150x60");
384 ::Fatal("AliTPCHits2Digits.C","TPC parameters have not been found !");
390 Int_t np = rl->GetHeader()->GetNtrack();
393 Int_t nrow_up=digp->GetNRowUp();
394 Int_t nrows=digp->GetNRowLow()+nrow_up;
395 Int_t zero=digp->GetZeroSup();
396 Int_t gap=Int_t(0.125*nrows), shift=Int_t(0.5*gap);
397 Int_t good_number=Int_t(0.4*nrows);
399 Int_t *good=new Int_t[np];
401 for (i=0; i<np; i++) good[i]=0;
407 tpcl->LoadRecPoints();
408 AliTPCClustersArray *pca=new AliTPCClustersArray, &ca=*pca;
410 ca.SetClusterType("AliTPCcluster");
411 ca.ConnectTree(tpcl->TreeR());
412 Int_t nrows=Int_t(ca.GetTree()->GetEntries());
413 for (Int_t n=0; n<nrows; n++) {
414 AliSegmentID *s=ca.LoadEntry(n);
416 digp->AdjustSectorRow(s->GetID(),sec,row);
417 AliTPCClustersRow &clrow = *ca.GetRow(sec,row);
418 Int_t ncl=clrow.GetArray()->GetEntriesFast();
420 AliTPCcluster *c=(AliTPCcluster*)clrow[ncl];
421 Int_t lab=c->GetLabel(0);
422 if (lab<0) continue; //noise cluster
425 if (sec>=digp->GetNInnerSector())
426 if (row==nrow_up-1) good[lab]|=0x4000;
427 if (sec>=digp->GetNInnerSector())
428 if (row==nrow_up-1-gap) good[lab]|=0x1000;
430 if (sec>=digp->GetNInnerSector())
431 if (row==nrow_up-1-shift) good[lab]|=0x2000;
432 if (sec>=digp->GetNInnerSector())
433 if (row==nrow_up-1-gap-shift) good[lab]|=0x800;
437 ca.ClearRow(sec,row);
440 tpcl->UnloadRecPoints();
446 TTree *TD=tpcl->TreeD();
448 AliSimDigits da, *digits=&da;
449 TD->GetBranch("Segment")->SetAddress(&digits);
451 Int_t *count = new Int_t[np];
453 for (i=0; i<np; i++) count[i]=0;
455 Int_t sectors_by_rows=(Int_t)TD->GetEntries();
456 for (i=0; i<sectors_by_rows; i++) {
457 if (!TD->GetEvent(i)) continue;
459 digp->AdjustSectorRow(digits->GetID(),sec,row);
460 //PH cerr<<sec<<' '<<row<<" \r";
462 do { //Many thanks to J.Chudoba who noticed this
463 Int_t it=digits->CurrentRow(), ip=digits->CurrentColumn();
464 Short_t dig = digits->GetDigit(it,ip);
465 Int_t idx0=digits->GetTrackID(it,ip,0);
466 Int_t idx1=digits->GetTrackID(it,ip,1);
467 Int_t idx2=digits->GetTrackID(it,ip,2);
468 if (idx0>=0 && dig>=zero && idx0<np) count[idx0]+=1;
469 if (idx1>=0 && dig>=zero && idx1<np) count[idx1]+=1;
470 if (idx2>=0 && dig>=zero && idx2<np) count[idx2]+=1;
471 } while (digits->Next());
472 for (Int_t j=0; j<np; j++) {
474 if (sec>=digp->GetNInnerSector())
475 if (row==nrow_up-1 ) good[j]|=0x4000;
476 if (sec>=digp->GetNInnerSector())
477 if (row==nrow_up-1-gap) good[j]|=0x1000;
479 if (sec>=digp->GetNInnerSector())
480 if (row==nrow_up-1-shift) good[j]|=0x2000;
481 if (sec>=digp->GetNInnerSector())
482 if (row==nrow_up-1-gap-shift) good[j]|=0x800;
489 tpcl->UnloadDigits();
493 ::Fatal("AliTPCComparison.C","Invalid TPC version !");
496 rl->LoadKinematics();
497 AliStack* stack = rl->Stack();
498 /** select tracks which are "good" enough **/
499 for (i=0; i<np; i++) {
500 if ((good[i]&0x5000) != 0x5000)
501 if ((good[i]&0x2800) != 0x2800) continue;
502 if ((good[i]&0x7FF ) < good_number) continue;
504 TParticle *p = (TParticle*)stack->Particle(i);
507 cerr<<"Can not get particle "<<i<<endl;
510 if (p->Pt()<0.100) continue;
511 if (TMath::Abs(p->Pz()/p->Pt())>0.999) continue;
513 Double_t vx=p->Vx(),vy=p->Vy();
514 if (TMath::Sqrt(vx*vx+vy*vy)>3.5) continue;
517 Int_t j=p->GetFirstMother();
519 TParticle *pp = (TParticle*)stack->Particle(j);
522 cerr<<"Can not get particle "<<j<<endl;
525 //if (pp->GetFirstMother()>=0) continue;//only one decay is allowed
526 // for cascade hyperons only
527 Int_t jj=pp->GetFirstMother();
529 TParticle *ppp = (TParticle*)stack->Particle(jj);
530 if (ppp->GetFirstMother()>=0) continue;//two decays are allowed
537 gt[nt].code=p->GetPdgCode();
538 gt[nt].px=0.; gt[nt].py=0.; gt[nt].pz=0.;
539 gt[nt].x=0.; gt[nt].y=0.; gt[nt].z=0.;
541 if (nt==max) {cerr<<"Too many good tracks !\n"; break;}
542 // cerr<<np-i<<" \r";
544 rl->UnloadKinematics();
546 /** check if there is also information at the entrance of the TPC **/
549 TTree *TR=rl->TreeTR();
550 TBranch *branch=TR->GetBranch("TPC");
552 ::Fatal("AliTPCComparison.C::good_tracks_tpc","No track references !");
554 TClonesArray *references=new TClonesArray("AliTrackReference",1000);
555 branch->SetAddress(&references);
556 np=(Int_t)TR->GetEntries();
557 for (i=0; i<np; i++) {
560 Int_t nref=references->GetEntriesFast();
561 if (nref==0) continue;
562 AliTrackReference *ref=(AliTrackReference*)references->UncheckedAt(0);
564 Int_t j, lab=ref->Label();
565 for (j=0; j<nt; j++) {if (gt[j].lab==lab) break;}
568 // (px,py,pz) - in global coordinate system, (x,y,z) - in local !
569 gt[j].px=ref->Px(); gt[j].py=ref->Py(); gt[j].pz=ref->Pz();
570 gt[j].x = ref->LocalX();
571 gt[j].y = ref->LocalY();
579 rl->UnloadTrackRefs();
582 gBenchmark->Stop("AliTPCComparison");
583 gBenchmark->Show("AliTPCComparison");