1 /****************************************************************************
2 * Very important, delicate and rather obscure macro. *
4 * Creates list of "trackable" tracks, *
5 * calculates efficiency, resolutions etc. *
6 * The ESD tracks must be in an appropriate state (kITSin or kITSrefit) *
8 * Origin: I.Belikov, CERN, Jouri.Belikov@cern.ch *
9 ****************************************************************************/
11 #if !defined(__CINT__) || defined(__MAKECINT__)
14 #include <Riostream.h>
18 #include <TParticle.h>
22 #include <TBenchmark.h>
28 #include "AliHeader.h"
29 #include "AliTrackReference.h"
30 #include "AliRunLoader.h"
35 #include "AliITSgeom.h"
36 #include "AliITSclusterV2.h"
37 #include "AliITSLoader.h"
40 Int_t GoodTracksITS(const Char_t *dir=".");
42 extern AliRun *gAlice;
43 extern TBenchmark *gBenchmark;
46 static Int_t allgood=0;
47 static Int_t allselected=0;
48 static Int_t allfound=0;
50 Int_t AliITSComparisonV2
51 (Float_t ptcutl=0.2, Float_t ptcuth=10., const Char_t *dir=".", Float_t ratio=0.0) {
52 gBenchmark->Start("AliITSComparisonV2");
54 ::Info("AliITSComparisonV2.C","Doing comparison...");
57 TH1F *hp=(TH1F*)gROOT->FindObject("hp");
58 if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.);
61 TH1F *hl=(TH1F*)gROOT->FindObject("hl");
62 if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20);
65 TH1F *hpt=(TH1F*)gROOT->FindObject("hpt");
66 if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
69 TH1F *hmpt=(TH1F*)gROOT->FindObject("hmpt");
71 hmpt=new TH1F("hmpt","Transverse impact parameter",30,-300,300);
72 hmpt->SetFillColor(6);
74 TH1F *hz=(TH1F*)gROOT->FindObject("hz");
75 if (!hz) hz=new TH1F("hz","Longitudinal impact parameter",30,-300,300);
79 TH1F *hgood=(TH1F*)gROOT->FindObject("hgood");
80 if (!hgood) hgood=new TH1F("hgood","Good tracks",30,0.2,6.1);
82 TH1F *hfound=(TH1F*)gROOT->FindObject("hfound");
83 if (!hfound) hfound=new TH1F("hfound","Found tracks",30,0.2,6.1);
85 TH1F *hfake=(TH1F*)gROOT->FindObject("hfake");
86 if (!hfake) hfake=new TH1F("hfake","Fake tracks",30,0.2,6.1);
88 TH1F *hg=(TH1F*)gROOT->FindObject("hg");
89 if (!hg) hg=new TH1F("hg","Efficiency for good tracks",30,0.2,6.1);
90 hg->SetLineColor(4); hg->SetLineWidth(2);
92 TH1F *hf=(TH1F*)gROOT->FindObject("hf");
93 if (!hf) hf=new TH1F("hf","Efficiency for fake tracks",30,0.2,6.1);
94 hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);
96 TH1F *he=(TH1F*)gROOT->FindObject("he");
98 he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,100.);
100 TH2F *hep=(TH2F*)gROOT->FindObject("hep");
101 if (!hep) hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,400.);
102 hep->SetMarkerStyle(8);
103 hep->SetMarkerSize(0.4);
107 sprintf(fname,"%s/GoodTracksITS.root",dir);
109 TFile *refFile=TFile::Open(fname,"old");
110 if (!refFile || !refFile->IsOpen()) {
111 ::Info("AliITSComparisonV2.C","Marking good tracks (will take a while)...");
112 if (GoodTracksITS(dir)) {
113 ::Error("AliITSComparisonV2.C","Can't generate the reference file !");
117 refFile=TFile::Open(fname,"old");
118 if (!refFile || !refFile->IsOpen()) {
119 ::Error("AliITSComparisonV2.C","Can't open the reference file !");
123 TTree *itsTree=(TTree*)refFile->Get("itsTree");
125 ::Error("AliITSComparisonV2.C","Can't get the reference tree !");
128 TBranch *branch=itsTree->GetBranch("ITS");
130 ::Error("AliITSComparisonV2.C","Can't get the ITS branch !");
133 TClonesArray dummy("AliTrackReference",1000), *refs=&dummy;
134 branch->SetAddress(&refs);
137 sprintf(fname,"%s/AliESDs.root",dir);
138 TFile *ef=TFile::Open(fname);
139 if ((!ef)||(!ef->IsOpen())) {
140 sprintf(fname,"%s/AliESDits.root",dir);
141 ef=TFile::Open(fname);
142 if ((!ef)||(!ef->IsOpen())) {
143 ::Error("AliITSComparisonV2.C","Can't open AliESDits.root !");
147 AliESD* event = new AliESD;
148 TTree* esdTree = (TTree*) ef->Get("esdTree");
150 ::Error("AliITSComparison.C", "no ESD tree found");
153 esdTree->SetBranchAddress("ESD", &event);
156 //******* Loop over events *********
158 while (esdTree->GetEvent(e)) {
159 cout<<endl<<endl<<"********* Processing event number: "<<e<<"*******\n";
161 Int_t nentr=event->GetNumberOfTracks();
164 if (itsTree->GetEvent(e++)==0) {
165 cerr<<"No reconstructable tracks !\n";
169 Int_t ngood=refs->GetEntriesFast();
172 const Int_t MAX=15000;
173 Int_t notf[MAX], nnotf=0;
174 Int_t fake[MAX], nfake=0;
175 Int_t mult[MAX], numb[MAX], nmult=0;
177 for (k=0; k<ngood; k++) {
178 AliTrackReference *ref=(AliTrackReference*)refs->UncheckedAt(k);
179 Int_t lab=ref->Label(), tlab=-1;
180 Float_t ptg=TMath::Sqrt(ref->Px()*ref->Px() + ref->Py()*ref->Py());
182 if (ptg<ptcutl) continue;
183 if (ptg>ptcuth) continue;
191 for (Int_t i=0; i<nentr; i++) {
192 AliESDtrack *t=event->GetTrack(i);
193 UInt_t status=t->GetStatus();
195 if ((status&AliESDtrack::kITSrefit)==0) continue;
197 Int_t lbl=t->GetLabel();
198 if (lab==TMath::Abs(lbl)) {
199 if (cnt==0) {esd=t; tlab=lbl;}
208 numb[nmult]=cnt; nmult++;
211 if (esd->GetITSFakeRatio()<ratio) tlab = TMath::Abs(tlab);
213 if (lab==tlab) hfound->Fill(ptg);
219 Double_t xv,par[5]; esd->GetExternalParameters(xv,par);
220 Float_t phi=TMath::ASin(par[2]) + esd->GetAlpha();
221 if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
222 if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
223 Float_t lam=TMath::ATan(par[3]);
224 Float_t pt_1=TMath::Abs(par[4]);
226 Float_t phig=TMath::ATan2(ref->Py(),ref->Px());
227 hp->Fill((phi - phig)*1000.);
229 Float_t lamg=TMath::ATan2(ref->Pz(),ptg);
230 hl->Fill((lam - lamg)*1000.);
232 Float_t d,z; esd->GetImpactParameters(d,z);
234 hz->Fill(10000*(z-ref->Z()));
236 hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
238 Float_t mom=1./(pt_1*TMath::Cos(lam));
239 Float_t dedx=esd->GetITSsignal();
240 hep->Fill(mom,dedx,1.);
242 Int_t pdg=(Int_t)ref->GetLength(); //this is particle's PDG !
244 if (TMath::Abs(pdg)==211) //pions
245 if (mom>0.4 && mom<0.5) he->Fill(dedx,1.);
249 cout<<"\nList of Not found tracks :\n";
250 for (k=0; k<nnotf; k++){
252 if ((k%9)==8) cout<<"\n";
254 cout<<"\n\nList of fake tracks :\n";
255 for (k=0; k<nfake; k++){
257 if ((k%9)==8) cout<<"\n";
259 cout<<"\n\nList of multiple found tracks :\n";
260 for (k=0; k<nmult; k++) {
261 cout<<"id. "<<mult[k]
262 <<" found - "<<numb[k]<<"times\n";
266 cout<<"Number of found tracks : "<<nentr<<endl;
267 cout<<"Number of \"good\" tracks : "<<ngood<<endl;
270 } //***** End of the loop over events
278 Stat_t ng=hgood->GetEntries(), nf=hfound->GetEntries();
279 if (ng!=0) cout<<"\n\nIntegral efficiency is about "<<nf/ng*100.<<" %\n";
280 cout<<"Total number selected of \"good\" tracks ="<<allselected<<endl<<endl;
281 cout<<"Total number of found tracks ="<<allfound<<endl;
282 cout<<"Total number of \"good\" tracks ="<<allgood<<endl;
285 gStyle->SetOptStat(111110);
286 gStyle->SetOptFit(1);
288 TCanvas *c1=new TCanvas("c1","",0,0,700,850);
292 TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
293 p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10);
294 hp->SetFillColor(4); hp->SetXTitle("(mrad)");
295 if (hp->GetEntries()<minc) hp->Draw(); else hp->Fit("gaus"); c1->cd();
297 TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw();
298 p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
299 hl->SetXTitle("(mrad)");
300 if (hl->GetEntries()<minc) hl->Draw(); else hl->Fit("gaus"); c1->cd();
302 TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
303 p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10);
304 hpt->SetXTitle("(%)");
305 if (hpt->GetEntries()<minc) hpt->Draw(); else hpt->Fit("gaus"); c1->cd();
307 TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
308 p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
309 hmpt->SetXTitle("(micron)");
310 if (hmpt->GetEntries()<minc) hmpt->Draw(); else hmpt->Fit("gaus");
311 hz->Draw("same"); c1->cd();
314 TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd();
315 p5->SetFillColor(41); p5->SetFrameFillColor(10);
316 hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
317 hg->Divide(hfound,hgood,1,1.,"b");
318 hf->Divide(hfake,hgood,1,1.,"b");
320 hg->SetYTitle("Tracking efficiency");
321 hg->SetXTitle("Pt (GeV/c)");
324 TLine *line1 = new TLine(0.2,1.0,6.1,1.0); line1->SetLineStyle(4);
326 TLine *line2 = new TLine(0.2,0.9,6.1,0.9); line2->SetLineStyle(4);
330 hf->SetFillStyle(3013);
333 hf->Draw("histsame");
334 TText *text = new TText(0.461176,0.248448,"Fake tracks");
335 text->SetTextSize(0.05);
337 text = new TText(0.453919,1.11408,"Good tracks");
338 text->SetTextSize(0.05);
341 TCanvas *c2=new TCanvas("c2","",320,32,530,590);
342 TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
343 p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10);
344 he->SetFillColor(2); he->SetFillStyle(3005);
345 he->SetXTitle("Arbitrary Units");
346 if (he->GetEntries()<minc) he->Draw(); else he->Fit("gaus"); c2->cd();
348 TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw();
349 p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
350 hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)");
351 hep->Draw(); c1->cd();
353 TFile fc("AliITSComparisonV2.root","RECREATE");
358 gBenchmark->Stop("AliITSComparisonV2");
359 gBenchmark->Show("AliITSComparisonV2");
366 Int_t GoodTracksITS(const Char_t *dir) {
368 delete gAlice->GetRunLoader();
369 delete gAlice;//if everything was OK here it is already NULL
374 sprintf(fname,"%s/galice.root",dir);
376 AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
378 ::Error("GoodTracksITS","Can't start session !");
384 rl->LoadKinematics();
386 AliITS *ITS=(AliITS*)rl->GetAliRun()->GetDetector("ITS");
388 ::Error("GoodTracksITS","Can't get the ITS !");
392 AliITSgeom *geom=ITS->GetITSgeom();
394 ::Error("GoodTracksITS","Can't get the ITS geometry !");
399 AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader");
401 ::Error("GoodTracksITS","Can not find the ITSLoader");
405 itsl->LoadRecPoints();
408 Int_t nev=rl->GetNumberOfEvents();
409 ::Info("GoodTracksITS","Number of events : %d\n",nev);
411 sprintf(fname,"%s/GoodTracksTPC.root",dir);
412 TFile *tpcFile=TFile::Open(fname);
413 if ((!tpcFile)||(!tpcFile->IsOpen())) {
414 ::Error("GoodTracksITS","Can't open the GoodTracksTPC.root !");
418 TClonesArray dum("AliTrackReference",1000), *tpcRefs=&dum;
419 TTree *tpcTree=(TTree*)tpcFile->Get("tpcTree");
421 ::Error("GoodTracksITS","Can't get the TPC reference tree !");
425 TBranch *tpcBranch=tpcTree->GetBranch("TPC");
427 ::Error("GoodTracksITS","Can't get the TPC reference branch !");
431 tpcBranch->SetAddress(&tpcRefs);
433 sprintf(fname,"%s/GoodTracksITS.root",dir);
434 TFile *itsFile=TFile::Open(fname,"recreate");
435 TClonesArray dummy2("AliTrackReference",1000), *itsRefs=&dummy2;
436 TTree itsTree("itsTree","Tree with info about the reconstructable ITS tracks");
437 itsTree.Branch("ITS",&itsRefs);
439 //******** Loop over generated events
440 for (Int_t e=0; e<nev; e++) {
443 rl->GetEvent(e); itsFile->cd();
445 Int_t np = rl->GetHeader()->GetNtrack();
446 cout<<"Event "<<e<<" Number of particles: "<<np<<endl;
448 //******** Fill the "good" masks
449 Int_t *good=new Int_t[np]; for (k=0; k<np; k++) good[k]=0;
451 TTree *cTree=itsl->TreeR();
453 ::Error("GoodTracksITS","Can't get the cluster tree !");
457 TBranch *branch=cTree->GetBranch("Clusters");
459 ::Error("GoodTracksITS","Can't get the clusters branch !");
463 TClonesArray dummy("AliITSclusterV2",10000), *clusters=&dummy;
464 branch->SetAddress(&clusters);
466 Int_t entr=(Int_t)cTree->GetEntries();
467 for (k=0; k<entr; k++) {
469 Int_t ncl=clusters->GetEntriesFast(); if (ncl==0) continue;
470 Int_t lay,lad,det; geom->GetModuleId(k,lay,lad,det);
471 if (lay<1 || lay>6) {
472 ::Error("GoodTracksITS","Wrong layer !");
477 AliITSclusterV2 *pnt=(AliITSclusterV2*)clusters->UncheckedAt(ncl);
478 Int_t l0=pnt->GetLabel(0);
480 // cerr<<"Wrong label: "<<l0<<endl;
483 Int_t l1=pnt->GetLabel(1);
485 // cerr<<"Wrong label: "<<l1<<endl;
488 Int_t l2=pnt->GetLabel(2);
490 // cerr<<"Wrong label: "<<l2<<endl;
493 Int_t mask=1<<(lay-1);
494 if (l0>=0) good[l0]|=mask;
495 if (l1>=0) good[l1]|=mask;
496 if (l2>=0) good[l2]|=mask;
502 //****** select tracks which are "good" enough
503 AliStack* stack = rl->Stack();
505 tpcTree->GetEvent(e);
506 Int_t nk=tpcRefs->GetEntriesFast();
508 for (k=0; k<nk; k++) {
509 AliTrackReference *tpcRef=(AliTrackReference *)tpcRefs->UncheckedAt(k);
510 Int_t lab=tpcRef->Label();
511 if (good[lab] != 0x3F) continue;
512 TParticle *p = (TParticle*)stack->Particle(lab);
514 cerr<<"Can not get particle "<<lab<<endl;
518 AliTrackReference *ref=new((*itsRefs)[nt]) AliTrackReference(*tpcRef);
519 ref->SetMomentum(p->Px(),p->Py(),p->Pz());
520 ref->SetPosition(p->Vx(),p->Vy(),p->Vz());
530 } //*** end of the loop over generated events