[u/mrichter/AliRoot.git] / ITS / AliITSComparisonV2.C

#ifndef __CINT__
  #include <Riostream.h>
  #include <fstream.h>

  #include "AliRun.h"
  #include "AliITS.h"
  #include "AliITSgeom.h"
  #include "AliITStrackerV2.h"
  #include "AliITStrackV2.h"
  #include "AliITSclusterV2.h"

  #include "TFile.h"
  #include "TTree.h"
  #include "TH1.h"
  #include "TH2.h"
  #include "TObjArray.h"
  #include "TStyle.h"
  #include "TCanvas.h"
  #include "TLine.h"
  #include "TText.h"
  #include "TParticle.h"
#endif

struct GoodTrackITS {
  Int_t lab;
  Int_t code;
  Float_t px,py,pz;
  Float_t x,y,z;
};

Int_t AliITSComparisonV2(Int_t event=0) {
   cerr<<"Doing comparison...\n";

   const Int_t MAX=15000;
   Int_t good_tracks_its(GoodTrackITS *gt, const Int_t max, const Int_t event);

   Int_t nentr=0; TObjArray tarray(2000);
   {/* Load tracks */ 
     TFile *tf=TFile::Open("AliITStracksV2.root");
     if (!tf->IsOpen()) {cerr<<"Can't open AliITStracksV2.root !\n"; return 3;}
     char tname[100]; sprintf(tname,"TreeT_ITS_%d",event);
     TTree *tracktree=(TTree*)tf->Get(tname);
     if (!tracktree) {cerr<<"Can't get a tree with ITS tracks !\n"; return 4;}
     TBranch *tbranch=tracktree->GetBranch("tracks");
     nentr=(Int_t)tracktree->GetEntries();

     for (Int_t i=0; i<nentr; i++) {
        AliITStrackV2 *iotrack=new AliITStrackV2;
        tbranch->SetAddress(&iotrack);
        tracktree->GetEvent(i);
        tarray.AddLast(iotrack);
        /*if (itsLabel != 1234) continue;
        Int_t nc=iotrack->GetNumberOfClusters();
        for (Int_t k=0; k<nc; k++) {
          Int_t index=iotrack->GetClusterIndex(k);
          AliITSclusterV2 *c=tracker.GetCluster(index);
          cout<<c->GetLabel(0)<<' '<<c->GetLabel(1)<<' '<<c->GetLabel(2)<<endl;
	}*/
     }
     delete tracktree; //Thanks to Mariana Bondila
     tf->Close();
   }

   /* Generate a list of "good" tracks */
   GoodTrackITS gt[MAX];
   Int_t ngood=0;
   ifstream in("good_tracks_its");
   if (in) {
      cerr<<"Reading good tracks...\n";
      while (in>>gt[ngood].lab>>gt[ngood].code>>
                 gt[ngood].px>>gt[ngood].py>>gt[ngood].pz>>
                 gt[ngood].x >>gt[ngood].y >>gt[ngood].z) {
         ngood++;
         cerr<<ngood<<'\r';
         if (ngood==MAX) {
            cerr<<"Too many good tracks !\n";
            break;
         }
      }
      if (!in.eof()) cerr<<"Read error (good_tracks_its) !\n";
   } else {
      cerr<<"Marking good tracks (this will take a while)...\n";
      ngood=good_tracks_its(gt,MAX,event);
      ofstream out("good_tracks_its");
      if (out) {
	for (Int_t ngd=0; ngd<ngood; ngd++)
	  out<<gt[ngd].lab<<' '<<gt[ngd].code<<' '
             <<gt[ngd].px<<' '<<gt[ngd].py<<' '<<gt[ngd].pz<<' '
             <<gt[ngd].x <<' '<<gt[ngd].y <<' '<<gt[ngd].z <<endl;
      } else cerr<<"Can not open file (good_tracks_its) !\n";
      out.close();
   }

   TH1F *hp=new TH1F("hp","PHI resolution",50,-20.,20.); hp->SetFillColor(4);
   TH1F *hl=new TH1F("hl","LAMBDA resolution",50,-20,20);hl->SetFillColor(4);
   TH1F *hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.); 
   hpt->SetFillColor(2); 
   TH1F *hmpt=new TH1F("hmpt","Transverse impact parameter",30,-300,300); 
   hmpt->SetFillColor(6);
   TH1F *hz=new TH1F("hz","Longitudinal impact parameter",30,-300,300); 

   AliITStrackV2 *trk=(AliITStrackV2*)tarray.UncheckedAt(0);
   Double_t pmin=0.1*(100/0.299792458/0.2/trk->GetConvConst());
   Double_t pmax=6.0+pmin;

   TH1F *hgood=new TH1F("hgood","Good tracks",30,pmin,pmax);    
   TH1F *hfound=new TH1F("hfound","Found tracks",30,pmin,pmax);
   TH1F *hfake=new TH1F("hfake","Fake tracks",30,pmin,pmax);
   TH1F *hg=new TH1F("hg","",30,pmin,pmax); //efficiency for good tracks
   hg->SetLineColor(4); hg->SetLineWidth(2);
   TH1F *hf=new TH1F("hf","Efficiency for fake tracks",30,pmin,pmax);
   hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);

   //TH1F *hptw=new TH1F("hptw","Weghted pt",30,pmax,pmin);

   TH1F *he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,100.);
   TH2F *hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,200.);
   hep->SetMarkerStyle(8);
   hep->SetMarkerSize(0.4);


   Int_t notf[MAX], nnotf=0;
   Int_t fake[MAX], nfake=0;
   Int_t mult[MAX], numb[MAX], nmult=0;

   Int_t ng;
   for (ng=0; ng<ngood; ng++) {
      Int_t lab=gt[ng].lab, tlab=-1;
      Double_t pxg=gt[ng].px, pyg=gt[ng].py, pzg=gt[ng].pz;
      Double_t ptg=TMath::Sqrt(pxg*pxg+pyg*pyg);


      if (ptg>pmin) hgood->Fill(ptg);

      AliITStrackV2 *track=0;
      Int_t cnt=0;
      Int_t j;
      for (j=0; j<nentr; j++) {
          AliITStrackV2 *trk=(AliITStrackV2*)tarray.UncheckedAt(j);
          Int_t lbl=trk->GetLabel();
          if (lab==TMath::Abs(lbl)) {
	    if (cnt==0) {track=trk; tlab=lbl;}
            cnt++;
          }
      }
      if (cnt==0) {
        notf[nnotf++]=lab;
        continue;
      } else if (cnt>1){
        mult[nmult]=lab;
        numb[nmult]=cnt; nmult++;        
      }

      if (ptg>pmin) {
        if (lab==tlab) hfound->Fill(ptg);
        else {
          fake[nfake++]=lab;
          hfake->Fill(ptg); 
        }
      }

      track->PropagateTo(3.,0.0028,65.19);
      track->PropagateToVertex();

      Double_t xv,par[5]; track->GetExternalParameters(xv,par);
      Float_t phi=TMath::ASin(par[2]) + track->GetAlpha();
      if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
      if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
      Float_t lam=TMath::ATan(par[3]); 
      Float_t pt_1=TMath::Abs(par[4]);

      Double_t phig=TMath::ATan2(pyg,pxg);
      hp->Fill((phi - phig)*1000.);

      Double_t lamg=TMath::ATan2(pzg,ptg);
      hl->Fill((lam - lamg)*1000.);

      Double_t d=10000*track->GetD();
      hmpt->Fill(d);

      //hptw->Fill(ptg,TMath::Abs(d));

      Double_t z=10000*track->GetZ();
      hz->Fill(z);

      hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);

      Float_t mom=1./(pt_1*TMath::Cos(lam));
      Float_t dedx=track->GetdEdx();
      hep->Fill(mom,dedx,1.);
      if (TMath::Abs(gt[ng].code)==211)
         if (mom>0.4 && mom<0.5) he->Fill(dedx,1.);
   }


   cout<<"\nList of Not found tracks :\n";
   for (ng=0; ng<nnotf; ng++){
     cout<<notf[ng]<<"\t";
     if ((ng%9)==8) cout<<"\n";
   }
   cout<<"\n\nList of fake  tracks :\n";
   for (ng=0; ng<nfake; ng++){
     cout<<fake[ng]<<"\t";
     if ((ng%9)==8) cout<<"\n";
   }
   cout<<"\n\nList of multiple found tracks :\n";
   for (ng=0; ng<nmult; ng++) {
       cout<<"id.   "<<mult[ng]
           <<"     found - "<<numb[ng]<<"times\n";
   }
   cout<<endl;

   cerr<<"Number of good tracks : "<<ngood<<endl;
   cerr<<"Number of found tracks : "<<nentr<<endl;

   ng=(Int_t)hgood->GetEntries(); //cerr<<"Good tracks "<<ng<<endl;
   if (ng!=0)  
   cerr<<"Integral efficiency is about "<<hfound->GetEntries()/ng*100.<<" %\n";
   cerr<<endl;

   gStyle->SetOptStat(111110);
   gStyle->SetOptFit(1);

   TCanvas *c1=new TCanvas("c1","",0,0,700,850);

   TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
   p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10); 
   hp->SetFillColor(4);  hp->SetXTitle("(mrad)"); hp->Fit("gaus"); c1->cd();

   TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw(); 
   p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
   hl->SetXTitle("(mrad)"); hl->Fit("gaus"); c1->cd();

   TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
   p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10); 
   hpt->SetXTitle("(%)"); hpt->Fit("gaus"); c1->cd();

   TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
   p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
   hmpt->SetXTitle("(micron)"); hmpt->Fit("gaus"); hz->Draw("same"); c1->cd();
   //hfound->Sumw2();
   //hptw->Sumw2(); 
   //hg->SetMaximum(333);
   //hg->SetYTitle("Impact Parameter Resolution (micron)");
   //hg->SetXTitle("Pt (GeV/c)");
   //hg->GetXaxis()->SetRange(0,10);
   //hg->Divide(hptw,hfound,1,1.);
   //hg->DrawCopy(); c1->cd();
   

   TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd(); 
   p5->SetFillColor(41); p5->SetFrameFillColor(10);
   hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
   hg->Divide(hfound,hgood,1,1.,"b");
   hf->Divide(hfake,hgood,1,1.,"b");
   hg->SetMaximum(1.4);
   hg->SetYTitle("Tracking efficiency");
   hg->SetXTitle("Pt (GeV/c)");
   hg->Draw();

   TLine *line1 = new TLine(pmin,1.0,pmax,1.0); line1->SetLineStyle(4);
   line1->Draw("same");
   TLine *line2 = new TLine(pmin,0.9,pmax,0.9); line2->SetLineStyle(4);
   line2->Draw("same");

   hf->SetFillColor(1);
   hf->SetFillStyle(3013);
   hf->SetLineColor(2);
   hf->SetLineWidth(2);
   hf->Draw("histsame");
   TText *text = new TText(0.461176,0.248448,"Fake tracks");
   text->SetTextSize(0.05);
   text->Draw();
   text = new TText(0.453919,1.11408,"Good tracks");
   text->SetTextSize(0.05);
   text->Draw();


   TCanvas *c2=new TCanvas("c2","",320,32,530,590);

   TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
   p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10); 
   he->SetFillColor(2); he->SetFillStyle(3005);  
   he->SetXTitle("Arbitrary Units"); 
   he->Fit("gaus"); c2->cd();

   TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw(); 
   p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
   hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)"); 
   hep->Draw(); c1->cd();


   return 0;
}

Int_t good_tracks_its(GoodTrackITS *gt, const Int_t max, const Int_t event) {
   if (gAlice) {delete gAlice; gAlice=0;}

   TFile *file=TFile::Open("galice.root");
   if (!file->IsOpen()) {cerr<<"Can't open galice.root !\n"; exit(4);}
   if (!(gAlice=(AliRun*)file->Get("gAlice"))) {
     cerr<<"gAlice have not been found on galice.root !\n";
     exit(5);
   }

   Int_t np=gAlice->GetEvent(event);

   Int_t *good=new Int_t[np];
   Int_t k;
   for (k=0; k<np; k++) good[k]=0;

   AliITS *ITS=(AliITS*)gAlice->GetDetector("ITS");
   if (!ITS) {
      cerr<<"can't get ITS !\n"; exit(8);
   }
   AliITSgeom *geom=ITS->GetITSgeom();
   if (!geom) {
      cerr<<"can't get ITS geometry !\n"; exit(9);
   }

   TFile *cf=TFile::Open("AliITSclustersV2.root");
   if (!cf->IsOpen()){
      cerr<<"Can't open AliITSclustersV2.root !\n"; exit(6);
   }
   char cname[100]; sprintf(cname,"TreeC_ITS_%d",event);
   TTree *cTree=(TTree*)cf->Get(cname);
   if (!cTree) {
      cerr<<"Can't get cTree !\n"; exit(7);
   }
   TBranch *branch=cTree->GetBranch("Clusters");
   if (!branch) {
      cerr<<"Can't get clusters branch !\n"; exit(8);
   }
   TClonesArray *clusters=new TClonesArray("AliITSclusterV2",10000);
   branch->SetAddress(&clusters);

   Int_t entr=(Int_t)cTree->GetEntries();
   for (k=0; k<entr; k++) {
     cTree->GetEvent(k);
     Int_t ncl=clusters->GetEntriesFast(); if (ncl==0) continue;
     Int_t lay,lad,det;  geom->GetModuleId(k,lay,lad,det);
     if (lay<1 || lay>6) {
	cerr<<"wrong layer !\n"; exit(10);
     }
     while (ncl--) {
        AliITSclusterV2 *pnt=(AliITSclusterV2*)clusters->UncheckedAt(ncl);
        Int_t l0=pnt->GetLabel(0);
        Int_t l1=pnt->GetLabel(1);
        Int_t l2=pnt->GetLabel(2);
        Int_t mask=1<<(lay-1);
        if (l0>=0) good[l0]|=mask; 
        if (l1>=0) good[l1]|=mask; 
        if (l2>=0) good[l2]|=mask;
     }
   }
   clusters->Delete(); delete clusters;
   delete cTree; //Thanks to Mariana Bondila
   cf->Close();

   ifstream in("good_tracks_tpc");
   if (!in) {
     cerr<<"can't get good_tracks_tpc !\n"; exit(11);
   }
   Int_t nt=0;
   Double_t px,py,pz,x,y,z;
   Int_t code,lab;
   while (in>>lab>>code>>px>>py>>pz>>x>>y>>z) {
      if (good[lab] != 0x3F) continue;
      TParticle *p = (TParticle*)gAlice->Particle(lab);
      gt[nt].lab=lab;
      gt[nt].code=p->GetPdgCode();
//**** px py pz - in global coordinate system
      gt[nt].px=p->Px(); gt[nt].py=p->Py(); gt[nt].pz=p->Pz();
      gt[nt].x=gt[nt].y=gt[nt].z=0.;
      nt++;
      if (nt==max) {cerr<<"Too many good tracks !\n"; break;}
   }

   delete[] good;

   delete gAlice; gAlice=0;
   file->Close();

   return nt;
}
Commit	Line	Data
03248e6d	1	#ifndef __CINT__
ddae8318	2	#include <Riostream.h>
03248e6d	3	#include <fstream.h>
	4
	5	#include "AliRun.h"
	6	#include "AliITS.h"
	7	#include "AliITSgeom.h"
	8	#include "AliITStrackerV2.h"
	9	#include "AliITStrackV2.h"
	10	#include "AliITSclusterV2.h"
	11
	12	#include "TFile.h"
	13	#include "TTree.h"
	14	#include "TH1.h"
f2718ade	15	#include "TH2.h"
03248e6d	16	#include "TObjArray.h"
	17	#include "TStyle.h"
	18	#include "TCanvas.h"
	19	#include "TLine.h"
	20	#include "TText.h"
	21	#include "TParticle.h"
	22	#endif
	23
	24	struct GoodTrackITS {
	25	Int_t lab;
	26	Int_t code;
	27	Float_t px,py,pz;
	28	Float_t x,y,z;
	29	};
	30
	31	Int_t AliITSComparisonV2(Int_t event=0) {
	32	cerr<<"Doing comparison...\n";
	33
	34	const Int_t MAX=15000;
	35	Int_t good_tracks_its(GoodTrackITS *gt, const Int_t max, const Int_t event);
	36
	37	Int_t nentr=0; TObjArray tarray(2000);
	38	{/* Load tracks */
	39	TFile *tf=TFile::Open("AliITStracksV2.root");
	40	if (!tf->IsOpen()) {cerr<<"Can't open AliITStracksV2.root !\n"; return 3;}
	41	char tname[100]; sprintf(tname,"TreeT_ITS_%d",event);
	42	TTree tracktree=(TTree)tf->Get(tname);
	43	if (!tracktree) {cerr<<"Can't get a tree with ITS tracks !\n"; return 4;}
	44	TBranch *tbranch=tracktree->GetBranch("tracks");
	45	nentr=(Int_t)tracktree->GetEntries();
f2718ade	46
03248e6d	47	for (Int_t i=0; i<nentr; i++) {
	48	AliITStrackV2 *iotrack=new AliITStrackV2;
	49	tbranch->SetAddress(&iotrack);
	50	tracktree->GetEvent(i);
	51	tarray.AddLast(iotrack);
	52	/*if (itsLabel != 1234) continue;
	53	Int_t nc=iotrack->GetNumberOfClusters();
	54	for (Int_t k=0; k<nc; k++) {
	55	Int_t index=iotrack->GetClusterIndex(k);
	56	AliITSclusterV2 *c=tracker.GetCluster(index);
	57	cout<<c->GetLabel(0)<<' '<<c->GetLabel(1)<<' '<<c->GetLabel(2)<<endl;
	58	}*/
	59	}
	60	delete tracktree; //Thanks to Mariana Bondila
	61	tf->Close();
	62	}
	63
	64	/* Generate a list of "good" tracks */
	65	GoodTrackITS gt[MAX];
	66	Int_t ngood=0;
	67	ifstream in("good_tracks_its");
	68	if (in) {
	69	cerr<<"Reading good tracks...\n";
	70	while (in>>gt[ngood].lab>>gt[ngood].code>>
	71	gt[ngood].px>>gt[ngood].py>>gt[ngood].pz>>
	72	gt[ngood].x >>gt[ngood].y >>gt[ngood].z) {
	73	ngood++;
	74	cerr<<ngood<<'\r';
	75	if (ngood==MAX) {
	76	cerr<<"Too many good tracks !\n";
	77	break;
	78	}
	79	}
	80	if (!in.eof()) cerr<<"Read error (good_tracks_its) !\n";
	81	} else {
	82	cerr<<"Marking good tracks (this will take a while)...\n";
	83	ngood=good_tracks_its(gt,MAX,event);
	84	ofstream out("good_tracks_its");
	85	if (out) {
	86	for (Int_t ngd=0; ngd<ngood; ngd++)
	87	out<<gt[ngd].lab<<' '<<gt[ngd].code<<' '
	88	<<gt[ngd].px<<' '<<gt[ngd].py<<' '<<gt[ngd].pz<<' '
	89	<<gt[ngd].x <<' '<<gt[ngd].y <<' '<<gt[ngd].z <<endl;
	90	} else cerr<<"Can not open file (good_tracks_its) !\n";
	91	out.close();
	92	}
03248e6d	93
	94	TH1F *hp=new TH1F("hp","PHI resolution",50,-20.,20.); hp->SetFillColor(4);
	95	TH1F *hl=new TH1F("hl","LAMBDA resolution",50,-20,20);hl->SetFillColor(4);
	96	TH1F *hpt=new TH1F("hpt","Relative Pt resolution",30,-10.,10.);
	97	hpt->SetFillColor(2);
	98	TH1F *hmpt=new TH1F("hmpt","Transverse impact parameter",30,-300,300);
	99	hmpt->SetFillColor(6);
	100	TH1F *hz=new TH1F("hz","Longitudinal impact parameter",30,-300,300);
03248e6d	101
	102	AliITStrackV2 trk=(AliITStrackV2)tarray.UncheckedAt(0);
	103	Double_t pmin=0.1*(100/0.299792458/0.2/trk->GetConvConst());
	104	Double_t pmax=6.0+pmin;
	105
	106	TH1F *hgood=new TH1F("hgood","Good tracks",30,pmin,pmax);
	107	TH1F *hfound=new TH1F("hfound","Found tracks",30,pmin,pmax);
	108	TH1F *hfake=new TH1F("hfake","Fake tracks",30,pmin,pmax);
	109	TH1F *hg=new TH1F("hg","",30,pmin,pmax); //efficiency for good tracks
	110	hg->SetLineColor(4); hg->SetLineWidth(2);
	111	TH1F *hf=new TH1F("hf","Efficiency for fake tracks",30,pmin,pmax);
	112	hf->SetFillColor(1); hf->SetFillStyle(3013); hf->SetLineWidth(2);
	113
f2718ade	114	//TH1F *hptw=new TH1F("hptw","Weghted pt",30,pmax,pmin);
	115
	116	TH1F *he =new TH1F("he","dE/dX for pions with 0.4<p<0.5 GeV/c",50,0.,100.);
	117	TH2F *hep=new TH2F("hep","dE/dX vs momentum",50,0.,2.,50,0.,200.);
	118	hep->SetMarkerStyle(8);
	119	hep->SetMarkerSize(0.4);
03248e6d	120
f2718ade	121
	122	Int_t notf[MAX], nnotf=0;
	123	Int_t fake[MAX], nfake=0;
	124	Int_t mult[MAX], numb[MAX], nmult=0;
	125
	126	Int_t ng;
	127	for (ng=0; ng<ngood; ng++) {
	128	Int_t lab=gt[ng].lab, tlab=-1;
	129	Double_t pxg=gt[ng].px, pyg=gt[ng].py, pzg=gt[ng].pz;
03248e6d	130	Double_t ptg=TMath::Sqrt(pxgpxg+pygpyg);
03248e6d	131
03248e6d	132
f2718ade	133	if (ptg>pmin) hgood->Fill(ptg);
03248e6d	134
03248e6d	135	AliITStrackV2 *track=0;
f2718ade	136	Int_t cnt=0;
03248e6d	137	Int_t j;
03248e6d	138	for (j=0; j<nentr; j++) {
f2718ade	139	AliITStrackV2 trk=(AliITStrackV2)tarray.UncheckedAt(j);
	140	Int_t lbl=trk->GetLabel();
	141	if (lab==TMath::Abs(lbl)) {
	142	if (cnt==0) {track=trk; tlab=lbl;}
	143	cnt++;
	144	}
03248e6d	145	}
f2718ade	146	if (cnt==0) {
f2718ade	147	notf[nnotf++]=lab;
03248e6d	148	continue;
f2718ade	149	} else if (cnt>1){
	150	mult[nmult]=lab;
	151	numb[nmult]=cnt; nmult++;
03248e6d	152	}
f2718ade	153
	154	if (ptg>pmin) {
	155	if (lab==tlab) hfound->Fill(ptg);
	156	else {
	157	fake[nfake++]=lab;
	158	hfake->Fill(ptg);
	159	}
	160	}
	161
03248e6d	162	track->PropagateTo(3.,0.0028,65.19);
	163	track->PropagateToVertex();
	164
03248e6d	165	Double_t xv,par[5]; track->GetExternalParameters(xv,par);
	166	Float_t phi=TMath::ASin(par[2]) + track->GetAlpha();
	167	if (phi<-TMath::Pi()) phi+=2*TMath::Pi();
	168	if (phi>=TMath::Pi()) phi-=2*TMath::Pi();
	169	Float_t lam=TMath::ATan(par[3]);
	170	Float_t pt_1=TMath::Abs(par[4]);
	171
	172	Double_t phig=TMath::ATan2(pyg,pxg);
	173	hp->Fill((phi - phig)*1000.);
	174
	175	Double_t lamg=TMath::ATan2(pzg,ptg);
	176	hl->Fill((lam - lamg)*1000.);
	177
	178	Double_t d=10000*track->GetD();
	179	hmpt->Fill(d);
	180
f2718ade	181	//hptw->Fill(ptg,TMath::Abs(d));
03248e6d	182
	183	Double_t z=10000*track->GetZ();
	184	hz->Fill(z);
	185
03248e6d	186	hpt->Fill((pt_1 - 1/ptg)/(1/ptg)*100.);
03248e6d	187
f2718ade	188	Float_t mom=1./(pt_1*TMath::Cos(lam));
	189	Float_t dedx=track->GetdEdx();
	190	hep->Fill(mom,dedx,1.);
	191	if (TMath::Abs(gt[ng].code)==211)
	192	if (mom>0.4 && mom<0.5) he->Fill(dedx,1.);
	193	}
	194
	195
	196	cout<<"\nList of Not found tracks :\n";
	197	for (ng=0; ng<nnotf; ng++){
	198	cout<<notf[ng]<<"\t";
	199	if ((ng%9)==8) cout<<"\n";
	200	}
	201	cout<<"\n\nList of fake tracks :\n";
	202	for (ng=0; ng<nfake; ng++){
	203	cout<<fake[ng]<<"\t";
	204	if ((ng%9)==8) cout<<"\n";
	205	}
	206	cout<<"\n\nList of multiple found tracks :\n";
	207	for (ng=0; ng<nmult; ng++) {
	208	cout<<"id. "<<mult[ng]
	209	<<" found - "<<numb[ng]<<"times\n";
03248e6d	210	}
f2718ade	211	cout<<endl;
03248e6d	212
f2718ade	213	cerr<<"Number of good tracks : "<<ngood<<endl;
	214	cerr<<"Number of found tracks : "<<nentr<<endl;
	215
	216	ng=(Int_t)hgood->GetEntries(); //cerr<<"Good tracks "<<ng<<endl;
	217	if (ng!=0)
	218	cerr<<"Integral efficiency is about "<<hfound->GetEntries()/ng*100.<<" %\n";
	219	cerr<<endl;
03248e6d	220
	221	gStyle->SetOptStat(111110);
	222	gStyle->SetOptFit(1);
	223
	224	TCanvas *c1=new TCanvas("c1","",0,0,700,850);
	225
	226	TPad *p1=new TPad("p1","",0,0.3,.5,.6); p1->Draw();
	227	p1->cd(); p1->SetFillColor(42); p1->SetFrameFillColor(10);
	228	hp->SetFillColor(4); hp->SetXTitle("(mrad)"); hp->Fit("gaus"); c1->cd();
	229
	230	TPad *p2=new TPad("p2","",0.5,.3,1,.6); p2->Draw();
	231	p2->cd(); p2->SetFillColor(42); p2->SetFrameFillColor(10);
	232	hl->SetXTitle("(mrad)"); hl->Fit("gaus"); c1->cd();
	233
	234	TPad *p3=new TPad("p3","",0,0,0.5,0.3); p3->Draw();
	235	p3->cd(); p3->SetFillColor(42); p3->SetFrameFillColor(10);
	236	hpt->SetXTitle("(%)"); hpt->Fit("gaus"); c1->cd();
	237
	238	TPad *p4=new TPad("p4","",0.5,0,1,0.3); p4->Draw();
	239	p4->cd(); p4->SetFillColor(42); p4->SetFrameFillColor(10);
	240	hmpt->SetXTitle("(micron)"); hmpt->Fit("gaus"); hz->Draw("same"); c1->cd();
	241	//hfound->Sumw2();
	242	//hptw->Sumw2();
	243	//hg->SetMaximum(333);
	244	//hg->SetYTitle("Impact Parameter Resolution (micron)");
	245	//hg->SetXTitle("Pt (GeV/c)");
	246	//hg->GetXaxis()->SetRange(0,10);
	247	//hg->Divide(hptw,hfound,1,1.);
	248	//hg->DrawCopy(); c1->cd();
	249
	250
	251	TPad *p5=new TPad("p5","",0,0.6,1,1); p5->Draw(); p5->cd();
	252	p5->SetFillColor(41); p5->SetFrameFillColor(10);
	253	hfound->Sumw2(); hgood->Sumw2(); hfake->Sumw2();
	254	hg->Divide(hfound,hgood,1,1.,"b");
	255	hf->Divide(hfake,hgood,1,1.,"b");
	256	hg->SetMaximum(1.4);
	257	hg->SetYTitle("Tracking efficiency");
	258	hg->SetXTitle("Pt (GeV/c)");
	259	hg->Draw();
	260
	261	TLine *line1 = new TLine(pmin,1.0,pmax,1.0); line1->SetLineStyle(4);
	262	line1->Draw("same");
	263	TLine *line2 = new TLine(pmin,0.9,pmax,0.9); line2->SetLineStyle(4);
	264	line2->Draw("same");
	265
	266	hf->SetFillColor(1);
	267	hf->SetFillStyle(3013);
	268	hf->SetLineColor(2);
	269	hf->SetLineWidth(2);
	270	hf->Draw("histsame");
	271	TText *text = new TText(0.461176,0.248448,"Fake tracks");
	272	text->SetTextSize(0.05);
	273	text->Draw();
	274	text = new TText(0.453919,1.11408,"Good tracks");
	275	text->SetTextSize(0.05);
	276	text->Draw();
	277
f2718ade	278
	279
	280	TCanvas *c2=new TCanvas("c2","",320,32,530,590);
	281
	282	TPad *p6=new TPad("p6","",0.,0.,1.,.5); p6->Draw();
	283	p6->cd(); p6->SetFillColor(42); p6->SetFrameFillColor(10);
	284	he->SetFillColor(2); he->SetFillStyle(3005);
	285	he->SetXTitle("Arbitrary Units");
	286	he->Fit("gaus"); c2->cd();
	287
	288	TPad *p7=new TPad("p7","",0.,0.5,1.,1.); p7->Draw();
	289	p7->cd(); p7->SetFillColor(42); p7->SetFrameFillColor(10);
	290	hep->SetXTitle("p (Gev/c)"); hep->SetYTitle("dE/dX (Arb. Units)");
	291	hep->Draw(); c1->cd();
	292
	293
03248e6d	294	return 0;
	295	}
	296
	297	Int_t good_tracks_its(GoodTrackITS *gt, const Int_t max, const Int_t event) {
	298	if (gAlice) {delete gAlice; gAlice=0;}
	299
	300	TFile *file=TFile::Open("galice.root");
	301	if (!file->IsOpen()) {cerr<<"Can't open galice.root !\n"; exit(4);}
	302	if (!(gAlice=(AliRun*)file->Get("gAlice"))) {
	303	cerr<<"gAlice have not been found on galice.root !\n";
	304	exit(5);
	305	}
	306
	307	Int_t np=gAlice->GetEvent(event);
	308
	309	Int_t *good=new Int_t[np];
	310	Int_t k;
	311	for (k=0; k<np; k++) good[k]=0;
	312
	313	AliITS ITS=(AliITS)gAlice->GetDetector("ITS");
	314	if (!ITS) {
	315	cerr<<"can't get ITS !\n"; exit(8);
	316	}
	317	AliITSgeom *geom=ITS->GetITSgeom();
	318	if (!geom) {
	319	cerr<<"can't get ITS geometry !\n"; exit(9);
	320	}
	321
	322	TFile *cf=TFile::Open("AliITSclustersV2.root");
	323	if (!cf->IsOpen()){
	324	cerr<<"Can't open AliITSclustersV2.root !\n"; exit(6);
	325	}
	326	char cname[100]; sprintf(cname,"TreeC_ITS_%d",event);
	327	TTree cTree=(TTree)cf->Get(cname);
	328	if (!cTree) {
	329	cerr<<"Can't get cTree !\n"; exit(7);
	330	}
	331	TBranch *branch=cTree->GetBranch("Clusters");
	332	if (!branch) {
	333	cerr<<"Can't get clusters branch !\n"; exit(8);
	334	}
	335	TClonesArray *clusters=new TClonesArray("AliITSclusterV2",10000);
	336	branch->SetAddress(&clusters);
	337
	338	Int_t entr=(Int_t)cTree->GetEntries();
	339	for (k=0; k<entr; k++) {
	340	cTree->GetEvent(k);
	341	Int_t ncl=clusters->GetEntriesFast(); if (ncl==0) continue;
	342	Int_t lay,lad,det; geom->GetModuleId(k,lay,lad,det);
	343	if (lay<1 \|\| lay>6) {
	344	cerr<<"wrong layer !\n"; exit(10);
	345	}
	346	while (ncl--) {
	347	AliITSclusterV2 pnt=(AliITSclusterV2)clusters->UncheckedAt(ncl);
	348	Int_t l0=pnt->GetLabel(0);
	349	Int_t l1=pnt->GetLabel(1);
	350	Int_t l2=pnt->GetLabel(2);
	351	Int_t mask=1<<(lay-1);
	352	if (l0>=0) good[l0]\|=mask;
	353	if (l1>=0) good[l1]\|=mask;
	354	if (l2>=0) good[l2]\|=mask;
	355	}
	356	}
	357	clusters->Delete(); delete clusters;
358	delete cTree; //Thanks to Mariana Bondila
359	cf->Close();
360
361	ifstream in("good_tracks_tpc");
362	if (!in) {
363	cerr<<"can't get good_tracks_tpc !\n"; exit(11);
364	}
365	Int_t nt=0;
366	Double_t px,py,pz,x,y,z;
367	Int_t code,lab;
368	while (in>>lab>>code>>px>>py>>pz>>x>>y>>z) {
369	if (good[lab] != 0x3F) continue;
370	TParticle p = (TParticle)gAlice->Particle(lab);
371	gt[nt].lab=lab;
372	gt[nt].code=p->GetPdgCode();
373	//**** px py pz - in global coordinate system
374	gt[nt].px=p->Px(); gt[nt].py=p->Py(); gt[nt].pz=p->Pz();
375	gt[nt].x=gt[nt].y=gt[nt].z=0.;
376	nt++;
377	if (nt==max) {cerr<<"Too many good tracks !\n"; break;}
378	}
379
380	delete[] good;
381
382	delete gAlice; gAlice=0;
383	file->Close();
384
385	return nt;
386	}
387
388