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"
53 Int_t good_tracks_tpc(GoodTrackTPC *gt, const Int_t max,
54 const char* evfoldname=AliConfig::fgkDefaultEventFolderName);
56 extern AliRun *gAlice;
57 extern TBenchmark *gBenchmark;
60 Int_t AliTPCComparison(const Char_t *dir=".") {
61 gBenchmark->Start("AliTPCComparison");
63 ::Info("AliTPCComparison.C","Doing comparison...");
66 delete gAlice->GetRunLoader();
67 delete gAlice;//if everything was OK here it is already NULL
72 sprintf(fname,"%s/galice.root",dir);
74 AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
76 ::Fatal("AliTPCComparison.C","Can't start session !");
79 /* Generate a list of "good" tracks */
80 const Int_t MAX=20000;
83 sprintf(fname,"%s/good_tracks_tpc",dir);
86 ::Info("AliTPCComparison.C","Reading good tracks...");
87 while (in>>gt[ngood].lab>>gt[ngood].code>>
88 gt[ngood].px>>gt[ngood].py>>gt[ngood].pz>>
89 gt[ngood].x >>gt[ngood].y >>gt[ngood].z) {
92 ::Warning("AliTPCComparison.C","Too many good tracks !");
97 ::Fatal("AliTPCComparison.C","Read error (good_tracks_tpc) !");
100 ("AliTPCComparison","Marking good tracks (this will take a while)...");
101 ngood=good_tracks_tpc(gt,MAX,"COMPARISON");
104 for (Int_t ngd=0; ngd<ngood; ngd++)
105 out<<gt[ngd].lab<<' '<<gt[ngd].code<<' '<<
106 gt[ngd].px<<' '<<gt[ngd].py<<' '<<gt[ngd].pz<<' '<<
107 gt[ngd].x <<' '<<gt[ngd].y <<' '<<gt[ngd].z <<endl;
109 ::Fatal("AliTPCComparison.C","Can not open file (good_tracks_tpc) !");
115 sprintf(fname,"%s/AliESDs.root",dir);
116 TFile *ef=TFile::Open(fname);
117 if ((!ef)||(!ef->IsOpen())) {
118 sprintf(fname,"%s/AliESDtpc.root",dir);
119 ef=TFile::Open(fname);
120 if ((!ef)||(!ef->IsOpen()))
121 ::Fatal("AliTPCComparison.C","Can't open AliESDtpc.root !");
124 TIter next(ef->GetListOfKeys());
125 if ((key=(TKey*)next())!=0) event=(AliESD*)key->ReadObj();
128 Int_t nentr=event->GetNumberOfTracks();
130 TH1F *hp=(TH1F*)gROOT->FindObject("hp");
131 if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.);
134 TH1F *hl=(TH1F*)gROOT->FindObject("hl");
135 if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20);
138 TH1F *hpt=(TH1F*)gROOT->FindObject("hpt");
139 if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
140 hpt->SetFillColor(2);
142 TH1F *hmpt=(TH1F*)gROOT->FindObject("hmpt");
144 hmpt=new TH1F("hmpt","Relative Pt resolution (pt>4GeV/c)",30,-60,60);
145 hmpt->SetFillColor(6);
149 TH1F *hgood=(TH1F*)gROOT->FindObject("hgood");
150 if (!hgood) hgood=new TH1F("hgood","Good tracks",30,0.2,6.1);
152 TH1F *hfound=(TH1F*)gROOT->FindObject("hfound");
153 if (!hfound) hfound=new TH1F("hfound","Found tracks",30,0.2,6.1);
155 TH1F *hfake=(TH1F*)gROOT->FindObject("hfake");
156 if (!hfake) hfake=new TH1F("hfake","Fake tracks",30,0.2,6.1);
158 TH1F *hg=(TH1F*)gROOT->FindObject("hg");
159 if (!hg) hg=new TH1F("hg","Efficiency for good tracks",30,0.2,6.1);
160 hg->SetLineColor(4); hg->SetLineWidth(2);
162 TH1F *hf=(TH1F*)gROOT->FindObject("hf");
163 if (!hf) hf=new TH1F("hf","Efficiency for fake tracks",30,0.2,6.1);
164 hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);
166 TH1F *he=(TH1F*)gROOT->FindObject("he");
168 he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,100.);
170 TH2F *hep=(TH2F*)gROOT->FindObject("hep");
171 if (!hep) hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,400.);
172 hep->SetMarkerStyle(8);
173 hep->SetMarkerSize(0.4);
177 Int_t track_notfound[MAX], itrack_notfound=0;
178 Int_t track_fake[MAX], itrack_fake=0;
179 Int_t track_multifound[MAX], track_multifound_n[MAX], itrack_multifound=0;
183 Int_t lab=gt[ngood].lab,tlab=-1;
185 TMath::Sqrt(gt[ngood].px*gt[ngood].px + gt[ngood].py*gt[ngood].py);
187 if (ptg<1e-33) continue; // for those not crossing 0 pad row
188 if (ptg<0.2) continue;
191 AliESDtrack *track=0;
192 for (i=0; i<nentr; i++) {
193 track=event->GetTrack(i);
194 tlab=track->GetLabel();
195 if (lab==TMath::Abs(tlab)) break;
198 track_notfound[itrack_notfound++]=lab;
202 //MI change - addition
205 AliESDtrack * mitrack;
206 for (mi=0; mi<nentr; mi++) {
207 mitrack=event->GetTrack(mi);
208 if (lab==TMath::Abs(mitrack->GetLabel())) micount++;
211 track_multifound[itrack_multifound]=lab;
212 track_multifound_n[itrack_multifound]=micount;
216 if (lab==tlab) hfound->Fill(ptg);
218 track_fake[itrack_fake++]=lab;
222 Double_t pxpypz[3]; track->GetInnerPxPyPz(pxpypz);
223 Float_t phi=TMath::ATan2(pxpypz[1],pxpypz[0]);
224 if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
225 if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
226 Double_t pt=TMath::Sqrt(pxpypz[0]*pxpypz[0]+pxpypz[1]*pxpypz[1]);
227 Float_t lam=TMath::ATan2(pxpypz[2],pt);
230 if (TMath::Abs(gt[ngood].code)==11 && ptg>4.) {
231 hmpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
233 Float_t phig=TMath::ATan2(gt[ngood].py,gt[ngood].px);
234 hp->Fill((phi - phig)*1000.);
236 Float_t lamg=TMath::ATan2(gt[ngood].pz,ptg);
237 hl->Fill((lam - lamg)*1000.);
239 hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
242 Float_t mom=pt/TMath::Cos(lam);
243 Float_t dedx=track->GetTPCsignal();
244 hep->Fill(mom,dedx,1.);
245 if (TMath::Abs(gt[ngood].code)==211)
246 if (mom>0.4 && mom<0.5) {
252 cout<<"\nList of Not found tracks :\n";
253 for ( i = 0; i< itrack_notfound; i++){
254 cout<<track_notfound[i]<<"\t";
255 if ((i%5)==4) cout<<"\n";
257 cout<<"\nList of fake tracks :\n";
258 for ( i = 0; i< itrack_fake; i++){
259 cout<<track_fake[i]<<"\t";
260 if ((i%5)==4) cout<<"\n";
262 cout<<"\nList of multiple found tracks :\n";
263 for ( i=0; i<itrack_multifound; i++) {
264 cout<<"id. "<<track_multifound[i]
265 <<" found - "<<track_multifound_n[i]<<"times\n";
268 Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
269 if (ng!=0) cerr<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
270 cout<<"Total number of found tracks ="<<nentr<<endl;
271 cout<<"Total number of \"good\" tracks ="
272 <<mingood<<" (selected for comparison: "<<ng<<')'<<endl<<endl;
275 gStyle->SetOptStat(111110);
276 gStyle->SetOptFit(1);
278 TCanvas *c1=new TCanvas("c1","",0,0,700,850);
280 TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
281 p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10);
282 hp->SetFillColor(4); hp->SetXTitle("(mrad)"); hp->Fit("gaus"); c1->cd();
284 TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw();
285 p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
286 hl->SetXTitle("(mrad)"); hl->Fit("gaus"); c1->cd();
288 TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
289 p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10);
290 hpt->SetXTitle("(%)"); hpt->Fit("gaus"); c1->cd();
292 TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
293 p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
294 hmpt->SetXTitle("(%)"); hmpt->Fit("gaus"); c1->cd();
296 TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd();
297 p5->SetFillColor(41); p5->SetFrameFillColor(10);
298 hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
299 hg->Divide(hfound,hgood,1,1.,"b");
300 hf->Divide(hfake,hgood,1,1.,"b");
302 hg->SetYTitle("Tracking efficiency");
303 hg->SetXTitle("Pt (GeV/c)");
306 TLine *line1 = new TLine(0.1,1.0,6.1,1.0); line1->SetLineStyle(4);
308 TLine *line2 = new TLine(0.1,0.9,6.1,0.9); line2->SetLineStyle(4);
312 hf->SetFillStyle(3013);
315 hf->Draw("histsame");
316 TText *text = new TText(0.461176,0.248448,"Fake tracks");
317 text->SetTextSize(0.05);
319 text = new TText(0.453919,1.11408,"Good tracks");
320 text->SetTextSize(0.05);
325 TCanvas *c2=new TCanvas("c2","",320,32,530,590);
327 TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
328 p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10);
329 he->SetFillColor(2); he->SetFillStyle(3005);
330 he->SetXTitle("Arbitrary Units");
331 he->Fit("gaus"); c2->cd();
333 TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw();
334 p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
335 hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)");
336 hep->Draw(); c1->cd();
338 gBenchmark->Stop("AliTPCComparison");
339 gBenchmark->Show("AliTPCComparison");
347 good_tracks_tpc(GoodTrackTPC *gt, const Int_t max, const char* evfoldname) {
350 AliRunLoader *rl = AliRunLoader::GetRunLoader(evfoldname);
352 ::Fatal("AliTPCComparison.C::good_tracks_tpc",
353 "Can not find Run Loader in Folder Named %s",
356 AliTPCLoader *tpcl = (AliTPCLoader *)rl->GetLoader("TPCLoader");
358 ::Fatal("AliTPCHits2Digits.C","Can not find TPCLoader !");
363 AliTPC *TPC=(AliTPC*)rl->GetAliRun()->GetDetector("TPC");
364 Int_t ver = TPC->IsVersion();
365 cerr<<"TPC version "<<ver<<" has been found !\n";
368 AliTPCParamSR *digp=(AliTPCParamSR*)gDirectory->Get("75x40_100x60_150x60");
370 ::Fatal("AliTPCHits2Digits.C","TPC parameters have not been found !");
376 Int_t np = rl->GetHeader()->GetNtrack();
379 Int_t nrow_up=digp->GetNRowUp();
380 Int_t nrows=digp->GetNRowLow()+nrow_up;
381 Int_t zero=digp->GetZeroSup();
382 Int_t gap=Int_t(0.125*nrows), shift=Int_t(0.5*gap);
383 Int_t good_number=Int_t(0.4*nrows);
385 Int_t *good=new Int_t[np];
387 for (i=0; i<np; i++) good[i]=0;
393 tpcl->LoadRecPoints();
394 AliTPCClustersArray *pca=new AliTPCClustersArray, &ca=*pca;
396 ca.SetClusterType("AliTPCcluster");
397 ca.ConnectTree(tpcl->TreeR());
398 Int_t nrows=Int_t(ca.GetTree()->GetEntries());
399 for (Int_t n=0; n<nrows; n++) {
400 AliSegmentID *s=ca.LoadEntry(n);
402 digp->AdjustSectorRow(s->GetID(),sec,row);
403 AliTPCClustersRow &clrow = *ca.GetRow(sec,row);
404 Int_t ncl=clrow.GetArray()->GetEntriesFast();
406 AliTPCcluster *c=(AliTPCcluster*)clrow[ncl];
407 Int_t lab=c->GetLabel(0);
408 if (lab<0) continue; //noise cluster
411 if (sec>=digp->GetNInnerSector())
412 if (row==nrow_up-1) good[lab]|=0x4000;
413 if (sec>=digp->GetNInnerSector())
414 if (row==nrow_up-1-gap) good[lab]|=0x1000;
416 if (sec>=digp->GetNInnerSector())
417 if (row==nrow_up-1-shift) good[lab]|=0x2000;
418 if (sec>=digp->GetNInnerSector())
419 if (row==nrow_up-1-gap-shift) good[lab]|=0x800;
423 ca.ClearRow(sec,row);
426 tpcl->UnloadRecPoints();
432 TTree *TD=tpcl->TreeD();
434 AliSimDigits da, *digits=&da;
435 TD->GetBranch("Segment")->SetAddress(&digits);
437 Int_t *count = new Int_t[np];
439 for (i=0; i<np; i++) count[i]=0;
441 Int_t sectors_by_rows=(Int_t)TD->GetEntries();
442 for (i=0; i<sectors_by_rows; i++) {
443 if (!TD->GetEvent(i)) continue;
445 digp->AdjustSectorRow(digits->GetID(),sec,row);
446 cerr<<sec<<' '<<row<<" \r";
448 do { //Many thanks to J.Chudoba who noticed this
449 Int_t it=digits->CurrentRow(), ip=digits->CurrentColumn();
450 Short_t dig = digits->GetDigit(it,ip);
451 Int_t idx0=digits->GetTrackID(it,ip,0);
452 Int_t idx1=digits->GetTrackID(it,ip,1);
453 Int_t idx2=digits->GetTrackID(it,ip,2);
454 if (idx0>=0 && dig>=zero && idx0<np) count[idx0]+=1;
455 if (idx1>=0 && dig>=zero && idx1<np) count[idx1]+=1;
456 if (idx2>=0 && dig>=zero && idx2<np) count[idx2]+=1;
457 } while (digits->Next());
458 for (Int_t j=0; j<np; j++) {
460 if (sec>=digp->GetNInnerSector())
461 if (row==nrow_up-1 ) good[j]|=0x4000;
462 if (sec>=digp->GetNInnerSector())
463 if (row==nrow_up-1-gap) good[j]|=0x1000;
465 if (sec>=digp->GetNInnerSector())
466 if (row==nrow_up-1-shift) good[j]|=0x2000;
467 if (sec>=digp->GetNInnerSector())
468 if (row==nrow_up-1-gap-shift) good[j]|=0x800;
475 tpcl->UnloadDigits();
479 ::Fatal("AliTPCComparison.C","Invalid TPC version !");
482 rl->LoadKinematics();
483 AliStack* stack = rl->Stack();
484 /** select tracks which are "good" enough **/
485 for (i=0; i<np; i++) {
486 if ((good[i]&0x5000) != 0x5000)
487 if ((good[i]&0x2800) != 0x2800) continue;
488 if ((good[i]&0x7FF ) < good_number) continue;
490 TParticle *p = (TParticle*)stack->Particle(i);
493 cerr<<"Can not get particle "<<i<<endl;
496 if (p->Pt()<0.100) continue;
497 if (TMath::Abs(p->Pz()/p->Pt())>0.999) continue;
499 Double_t vx=p->Vx(),vy=p->Vy();
500 if (TMath::Sqrt(vx*vx+vy*vy)>3.5) continue;
503 Int_t j=p->GetFirstMother();
505 TParticle *pp = (TParticle*)stack->Particle(j);
508 cerr<<"Can not get particle "<<j<<endl;
511 //if (pp->GetFirstMother()>=0) continue;//only one decay is allowed
512 // for cascade hyperons only
513 Int_t jj=pp->GetFirstMother();
515 TParticle *ppp = (TParticle*)stack->Particle(jj);
516 if (ppp->GetFirstMother()>=0) continue;//two decays are allowed
523 gt[nt].code=p->GetPdgCode();
524 gt[nt].px=0.; gt[nt].py=0.; gt[nt].pz=0.;
525 gt[nt].x=0.; gt[nt].y=0.; gt[nt].z=0.;
527 if (nt==max) {cerr<<"Too many good tracks !\n"; break;}
530 rl->UnloadKinematics();
532 /** check if there is also information at the entrance of the TPC **/
535 TTree *TR=rl->TreeTR();
536 TBranch *branch=TR->GetBranch("TPC");
538 ::Fatal("AliTPCComparison.C::good_tracks_tpc","No track references !");
540 TClonesArray *references=new TClonesArray("AliTrackReference",1000);
541 branch->SetAddress(&references);
542 np=(Int_t)TR->GetEntries();
543 for (i=0; i<np; i++) {
546 Int_t nref=references->GetEntriesFast();
547 if (nref==0) continue;
548 AliTrackReference *ref=(AliTrackReference*)references->UncheckedAt(0);
550 Int_t j, lab=ref->Label();
551 for (j=0; j<nt; j++) {if (gt[j].lab==lab) break;}
554 // (px,py,pz) - in global coordinate system, (x,y,z) - in local !
555 gt[j].px=ref->Px(); gt[j].py=ref->Py(); gt[j].pz=ref->Pz();
556 gt[j].x = ref->LocalX();
557 gt[j].y = ref->LocalY();
565 rl->UnloadTrackRefs();
568 gBenchmark->Stop("AliTPCComparison");
569 gBenchmark->Show("AliTPCComparison");