Coding conventions
[u/mrichter/AliRoot.git] / ITS / AliITSComparisonV2.C
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c630aafd 1/****************************************************************************
5102bab6 2 * Very important, delicate and rather obscure macro. *
3 * *
4 * Creates list of "trackable" tracks, *
5 * calculates efficiency, resolutions etc. *
6 * The ESD tracks must be in an appropriate state (kITSin or kITSrefit) *
7 * *
c630aafd 8 * Origin: I.Belikov, CERN, Jouri.Belikov@cern.ch *
9 ****************************************************************************/
10
11#if !defined(__CINT__) || defined(__MAKECINT__)
4fa1e629 12 #include <TMath.h>
13 #include <TError.h>
ddae8318 14 #include <Riostream.h>
4fa1e629 15 #include <TH1F.h>
16 #include <TH2F.h>
17 #include <TTree.h>
18 #include <TParticle.h>
19 #include <TCanvas.h>
20 #include <TLine.h>
21 #include <TText.h>
22 #include <TBenchmark.h>
23 #include <TStyle.h>
8b462fd8 24 #include <TFile.h>
4fa1e629 25 #include <TROOT.h>
03248e6d 26
c630aafd 27 #include "AliStack.h"
4fa1e629 28 #include "AliHeader.h"
29 #include "AliTrackReference.h"
88cb7938 30 #include "AliRunLoader.h"
4fa1e629 31 #include "AliRun.h"
32 #include "AliESD.h"
33
03248e6d 34 #include "AliITS.h"
35 #include "AliITSgeom.h"
03248e6d 36 #include "AliITSclusterV2.h"
4fa1e629 37 #include "AliITSLoader.h"
03248e6d 38#endif
39
4fa1e629 40Int_t GoodTracksITS(const Char_t *dir=".");
5102bab6 41
c630aafd 42extern AliRun *gAlice;
4fa1e629 43extern TBenchmark *gBenchmark;
44extern TROOT *gROOT;
c630aafd 45
4fa1e629 46static Int_t allgood=0;
47static Int_t allselected=0;
48static Int_t allfound=0;
49
50Int_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");
53
54 ::Info("AliITSComparisonV2.C","Doing comparison...");
88cb7938 55
4fa1e629 56
57 TH1F *hp=(TH1F*)gROOT->FindObject("hp");
58 if (!hp) hp=new TH1F("hp","PHI resolution",50,-20.,20.);
59 hp->SetFillColor(4);
60
61 TH1F *hl=(TH1F*)gROOT->FindObject("hl");
62 if (!hl) hl=new TH1F("hl","LAMBDA resolution",50,-20,20);
63 hl->SetFillColor(4);
64
65 TH1F *hpt=(TH1F*)gROOT->FindObject("hpt");
66 if (!hpt) hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
67 hpt->SetFillColor(2);
68
69 TH1F *hmpt=(TH1F*)gROOT->FindObject("hmpt");
70 if (!hmpt)
71 hmpt=new TH1F("hmpt","Transverse impact parameter",30,-300,300);
72 hmpt->SetFillColor(6);
73
74 TH1F *hz=(TH1F*)gROOT->FindObject("hz");
75 if (!hz) hz=new TH1F("hz","Longitudinal impact parameter",30,-300,300);
76
77
78
79 TH1F *hgood=(TH1F*)gROOT->FindObject("hgood");
80 if (!hgood) hgood=new TH1F("hgood","Good tracks",30,0.2,6.1);
81
82 TH1F *hfound=(TH1F*)gROOT->FindObject("hfound");
83 if (!hfound) hfound=new TH1F("hfound","Found tracks",30,0.2,6.1);
84
85 TH1F *hfake=(TH1F*)gROOT->FindObject("hfake");
86 if (!hfake) hfake=new TH1F("hfake","Fake tracks",30,0.2,6.1);
87
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);
91
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);
95
96 TH1F *he=(TH1F*)gROOT->FindObject("he");
97 if (!he)
98 he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,100.);
99
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);
104
105
106 Char_t fname[100];
107 sprintf(fname,"%s/GoodTracksITS.root",dir);
108
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 !");
114 return 1;
115 }
c630aafd 116 }
4fa1e629 117 refFile=TFile::Open(fname,"old");
118 if (!refFile || !refFile->IsOpen()) {
119 ::Error("AliITSComparisonV2.C","Can't open the reference file !");
120 return 1;
121 }
122
123 TTree *itsTree=(TTree*)refFile->Get("itsTree");
124 if (!itsTree) {
125 ::Error("AliITSComparisonV2.C","Can't get the reference tree !");
126 return 2;
c630aafd 127 }
4fa1e629 128 TBranch *branch=itsTree->GetBranch("ITS");
129 if (!branch) {
130 ::Error("AliITSComparisonV2.C","Can't get the ITS branch !");
131 return 3;
03248e6d 132 }
4fa1e629 133 TClonesArray dummy("AliTrackReference",1000), *refs=&dummy;
134 branch->SetAddress(&refs);
135
03248e6d 136
4fa1e629 137 sprintf(fname,"%s/AliESDs.root",dir);
138 TFile *ef=TFile::Open(fname);
5102bab6 139 if ((!ef)||(!ef->IsOpen())) {
4fa1e629 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 !");
144 return 4;
145 }
5102bab6 146 }
8b462fd8 147 AliESD* event = new AliESD;
148 TTree* esdTree = (TTree*) ef->Get("esdTree");
149 if (!esdTree) {
150 ::Error("AliITSComparison.C", "no ESD tree found");
151 return 6;
152 }
153 esdTree->SetBranchAddress("ESD", &event);
4fa1e629 154
155
156 //******* Loop over events *********
157 Int_t e=0;
8b462fd8 158 while (esdTree->GetEvent(e)) {
4fa1e629 159 cout<<endl<<endl<<"********* Processing event number: "<<e<<"*******\n";
160
4fa1e629 161 Int_t nentr=event->GetNumberOfTracks();
162 allfound+=nentr;
163
164 if (itsTree->GetEvent(e++)==0) {
165 cerr<<"No reconstructable tracks !\n";
166 continue;
18856a77 167 }
18856a77 168
4fa1e629 169 Int_t ngood=refs->GetEntriesFast();
170 allgood+=ngood;
03248e6d 171
4fa1e629 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;
176 Int_t k;
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());
03248e6d 181
4fa1e629 182 if (ptg<ptcutl) continue;
183 if (ptg>ptcuth) continue;
03248e6d 184
4fa1e629 185 allselected++;
f2718ade 186
4fa1e629 187 hgood->Fill(ptg);
03248e6d 188
4fa1e629 189 AliESDtrack *esd=0;
190 Int_t cnt=0;
4fa1e629 191 for (Int_t i=0; i<nentr; i++) {
192 AliESDtrack *t=event->GetTrack(i);
193 UInt_t status=t->GetStatus();
f2718ade 194
4fa1e629 195 if ((status&AliESDtrack::kITSrefit)==0) continue;
196
4fa1e629 197 Int_t lbl=t->GetLabel();
198 if (lab==TMath::Abs(lbl)) {
199 if (cnt==0) {esd=t; tlab=lbl;}
200 cnt++;
201 }
202 }
203 if (cnt==0) {
204 notf[nnotf++]=lab;
205 continue;
206 } else if (cnt>1){
207 mult[nmult]=lab;
208 numb[nmult]=cnt; nmult++;
209 }
210
211 if (esd->GetITSFakeRatio()<ratio) tlab = TMath::Abs(tlab);
f2718ade 212
f2718ade 213 if (lab==tlab) hfound->Fill(ptg);
214 else {
215 fake[nfake++]=lab;
216 hfake->Fill(ptg);
217 }
f2718ade 218
c84a5e9e 219 Double_t xv,par[5]; esd->GetExternalParameters(xv,par);
220 Float_t phi=TMath::ASin(par[2]) + esd->GetAlpha();
4fa1e629 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]);
03248e6d 225
4fa1e629 226 Float_t phig=TMath::ATan2(ref->Py(),ref->Px());
227 hp->Fill((phi - phig)*1000.);
03248e6d 228
4fa1e629 229 Float_t lamg=TMath::ATan2(ref->Pz(),ptg);
230 hl->Fill((lam - lamg)*1000.);
03248e6d 231
c84a5e9e 232 Float_t d,z; esd->GetImpactParameters(d,z);
233 hmpt->Fill(10000*d);
234 hz->Fill(10000*(z-ref->Z()));
03248e6d 235
4fa1e629 236 hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
03248e6d 237
4fa1e629 238 Float_t mom=1./(pt_1*TMath::Cos(lam));
c84a5e9e 239 Float_t dedx=esd->GetITSsignal();
4fa1e629 240 hep->Fill(mom,dedx,1.);
f2718ade 241
4fa1e629 242 Int_t pdg=(Int_t)ref->GetLength(); //this is particle's PDG !
f2718ade 243
4fa1e629 244 if (TMath::Abs(pdg)==211) //pions
245 if (mom>0.4 && mom<0.5) he->Fill(dedx,1.);
03248e6d 246
4fa1e629 247 }
248
249 cout<<"\nList of Not found tracks :\n";
250 for (k=0; k<nnotf; k++){
251 cout<<notf[k]<<"\t";
252 if ((k%9)==8) cout<<"\n";
253 }
254 cout<<"\n\nList of fake tracks :\n";
255 for (k=0; k<nfake; k++){
256 cout<<fake[k]<<"\t";
257 if ((k%9)==8) cout<<"\n";
258 }
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";
263 }
264 cout<<endl;
265
266 cout<<"Number of found tracks : "<<nentr<<endl;
267 cout<<"Number of \"good\" tracks : "<<ngood<<endl;
f2718ade 268
4fa1e629 269 refs->Clear();
4fa1e629 270 } //***** End of the loop over events
271
8b462fd8 272 delete event;
4fa1e629 273 ef->Close();
274
275 delete itsTree;
276 refFile->Close();
277
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;
283 cout<<endl;
03248e6d 284
285 gStyle->SetOptStat(111110);
286 gStyle->SetOptFit(1);
287
288 TCanvas *c1=new TCanvas("c1","",0,0,700,850);
289
2d343a94 290 Int_t minc=33;
291
03248e6d 292 TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
293 p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10);
2d343a94 294 hp->SetFillColor(4); hp->SetXTitle("(mrad)");
295 if (hp->GetEntries()<minc) hp->Draw(); else hp->Fit("gaus"); c1->cd();
03248e6d 296
297 TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw();
298 p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
2d343a94 299 hl->SetXTitle("(mrad)");
300 if (hl->GetEntries()<minc) hl->Draw(); else hl->Fit("gaus"); c1->cd();
03248e6d 301
302 TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
303 p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10);
2d343a94 304 hpt->SetXTitle("(%)");
305 if (hpt->GetEntries()<minc) hpt->Draw(); else hpt->Fit("gaus"); c1->cd();
03248e6d 306
307 TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
308 p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
2d343a94 309 hmpt->SetXTitle("(micron)");
310 if (hmpt->GetEntries()<minc) hmpt->Draw(); else hmpt->Fit("gaus");
311 hz->Draw("same"); c1->cd();
03248e6d 312
313
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");
319 hg->SetMaximum(1.4);
320 hg->SetYTitle("Tracking efficiency");
321 hg->SetXTitle("Pt (GeV/c)");
322 hg->Draw();
323
4fa1e629 324 TLine *line1 = new TLine(0.2,1.0,6.1,1.0); line1->SetLineStyle(4);
03248e6d 325 line1->Draw("same");
4fa1e629 326 TLine *line2 = new TLine(0.2,0.9,6.1,0.9); line2->SetLineStyle(4);
03248e6d 327 line2->Draw("same");
328
329 hf->SetFillColor(1);
330 hf->SetFillStyle(3013);
331 hf->SetLineColor(2);
332 hf->SetLineWidth(2);
333 hf->Draw("histsame");
334 TText *text = new TText(0.461176,0.248448,"Fake tracks");
335 text->SetTextSize(0.05);
336 text->Draw();
337 text = new TText(0.453919,1.11408,"Good tracks");
338 text->SetTextSize(0.05);
339 text->Draw();
340
c630aafd 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");
2d343a94 346 if (he->GetEntries()<minc) he->Draw(); else he->Fit("gaus"); c2->cd();
c630aafd 347
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();
2d343a94 352
353 TFile fc("AliITSComparisonV2.root","RECREATE");
354 c1->Write();
355 c2->Write();
356 fc.Close();
357
4fa1e629 358 gBenchmark->Stop("AliITSComparisonV2");
359 gBenchmark->Show("AliITSComparisonV2");
360
03248e6d 361 return 0;
362}
363
4fa1e629 364
365
366Int_t GoodTracksITS(const Char_t *dir) {
367 if (gAlice) {
368 delete gAlice->GetRunLoader();
369 delete gAlice;//if everything was OK here it is already NULL
370 gAlice = 0x0;
c630aafd 371 }
88cb7938 372
4fa1e629 373 Char_t fname[100];
374 sprintf(fname,"%s/galice.root",dir);
375
376 AliRunLoader *rl = AliRunLoader::Open(fname,"COMPARISON");
377 if (!rl) {
378 ::Error("GoodTracksITS","Can't start session !");
379 return 1;
c630aafd 380 }
4fa1e629 381
88cb7938 382 rl->LoadgAlice();
383 rl->LoadHeader();
4fa1e629 384 rl->LoadKinematics();
03248e6d 385
88cb7938 386 AliITS *ITS=(AliITS*)rl->GetAliRun()->GetDetector("ITS");
03248e6d 387 if (!ITS) {
4fa1e629 388 ::Error("GoodTracksITS","Can't get the ITS !");
389 delete rl;
390 return 2;
03248e6d 391 }
392 AliITSgeom *geom=ITS->GetITSgeom();
393 if (!geom) {
4fa1e629 394 ::Error("GoodTracksITS","Can't get the ITS geometry !");
395 delete rl;
396 return 3;
03248e6d 397 }
398
4fa1e629 399 AliITSLoader* itsl = (AliITSLoader*)rl->GetLoader("ITSLoader");
400 if (itsl == 0x0) {
401 ::Error("GoodTracksITS","Can not find the ITSLoader");
402 delete rl;
403 return 4;
404 }
c630aafd 405 itsl->LoadRecPoints();
4fa1e629 406
407
408 Int_t nev=rl->GetNumberOfEvents();
409 ::Info("GoodTracksITS","Number of events : %d\n",nev);
410
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 !");
415 delete rl;
416 return 5;
03248e6d 417 }
4fa1e629 418 TClonesArray dum("AliTrackReference",1000), *tpcRefs=&dum;
419 TTree *tpcTree=(TTree*)tpcFile->Get("tpcTree");
420 if (!tpcTree) {
421 ::Error("GoodTracksITS","Can't get the TPC reference tree !");
422 delete rl;
423 return 6;
03248e6d 424 }
4fa1e629 425 TBranch *tpcBranch=tpcTree->GetBranch("TPC");
426 if (!tpcBranch) {
427 ::Error("GoodTracksITS","Can't get the TPC reference branch !");
428 delete rl;
429 return 7;
430 }
431 tpcBranch->SetAddress(&tpcRefs);
432
433 sprintf(fname,"%s/GoodTracksITS.root",dir);
434 TFile *itsFile=TFile::Open(fname,"recreate");
8c277781 435 TClonesArray dummy2("AliTrackReference",1000), *itsRefs=&dummy2;
4fa1e629 436 TTree itsTree("itsTree","Tree with info about the reconstructable ITS tracks");
437 itsTree.Branch("ITS",&itsRefs);
438
439 //******** Loop over generated events
440 for (Int_t e=0; e<nev; e++) {
441 Int_t k;
442
443 rl->GetEvent(e); itsFile->cd();
444
445 Int_t np = rl->GetHeader()->GetNtrack();
446 cout<<"Event "<<e<<" Number of particles: "<<np<<endl;
447
448 //******** Fill the "good" masks
449 Int_t *good=new Int_t[np]; for (k=0; k<np; k++) good[k]=0;
450
451 TTree *cTree=itsl->TreeR();
452 if (!cTree) {
453 ::Error("GoodTracksITS","Can't get the cluster tree !");
454 delete rl;
455 return 8;
03248e6d 456 }
4fa1e629 457 TBranch *branch=cTree->GetBranch("Clusters");
458 if (!branch) {
459 ::Error("GoodTracksITS","Can't get the clusters branch !");
460 delete rl;
461 return 9;
462 }
463 TClonesArray dummy("AliITSclusterV2",10000), *clusters=&dummy;
464 branch->SetAddress(&clusters);
465
466 Int_t entr=(Int_t)cTree->GetEntries();
467 for (k=0; k<entr; k++) {
468 cTree->GetEvent(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 !");
473 delete rl;
474 return 10;
475 }
476 while (ncl--) {
477 AliITSclusterV2 *pnt=(AliITSclusterV2*)clusters->UncheckedAt(ncl);
478 Int_t l0=pnt->GetLabel(0);
479 if (l0>=np) {
480// cerr<<"Wrong label: "<<l0<<endl;
481 continue;
482 }
483 Int_t l1=pnt->GetLabel(1);
484 if (l1>=np) {
485// cerr<<"Wrong label: "<<l1<<endl;
486 continue;
487 }
488 Int_t l2=pnt->GetLabel(2);
489 if (l2>=np) {
490// cerr<<"Wrong label: "<<l2<<endl;
491 continue;
492 }
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;
497 }
498 clusters->Clear();
03248e6d 499 }
88cb7938 500
03248e6d 501
4fa1e629 502 //****** select tracks which are "good" enough
503 AliStack* stack = rl->Stack();
504
505 tpcTree->GetEvent(e);
506 Int_t nk=tpcRefs->GetEntriesFast();
507 Int_t nt=0;
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);
513 if (p == 0x0) {
514 cerr<<"Can not get particle "<<lab<<endl;
515 continue;
516 }
517
8c277781 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());
4fa1e629 521 nt++;
522 }
523 tpcRefs->Clear();
524
525 itsTree.Fill();
526 itsRefs->Clear();
03248e6d 527
4fa1e629 528 delete[] good;
03248e6d 529
4fa1e629 530 } //*** end of the loop over generated events
531
532 itsTree.Write();
533 itsFile->Close();
534
535 delete tpcTree;
536 tpcFile->Close();
537
538 delete rl;
539 return 0;
03248e6d 540}
541
542