T0/AliT0CalibWalk.cxx

   1 /**************************************************************************
   2  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
   3  *                                                                        *
   4  * Author: The ALICE Off-line Project.                                    *
   5  * Contributors are mentioned in the code where appropriate.              *
   6  *                                                                        *
   7  * Permission to use, copy, modify and distribute this software and its   *
   8  * documentation strictly for non-commercial purposes is hereby granted   *
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  10  * copies and that both the copyright notice and this permission notice   *
  11  * appear in the supporting documentation. The authors make no claims     *
  12  * about the suitability of this software for any purpose. It is          *
  13  * provided "as is" without express or implied warranty.                  *
  14  **************************************************************************/
  15
  16 /* $Id$ */
  17
  18 ///////////////////////////////////////////////////////////////////////////////
  19 //                                                                           //
  20 // class T0 walk correction      Alla Maevskaya alla@inr.ru 20.11.2007        //
  21 //                                                                           //
  22 ///////////////////////////////////////////////////////////////////////////////
  23
  24 #include "AliT0CalibWalk.h"
  25 #include "AliLog.h"
  26
  27 #include <TObjArray.h>
  28 #include <TGraph.h>
  29 #include <TFile.h>
  30 #include <TH2F.h>
  31 #include <TMath.h>
  32 #include <TSystem.h>
  33 #include <Riostream.h>
  34 #include <TSpectrum.h>
  35 #include <TProfile.h>
  36 #include <TF1.h>
  37
  38 using std::cout;
  39 using std::endl;
  40 ClassImp(AliT0CalibWalk)
  41
  42 //________________________________________________________________
  43   AliT0CalibWalk::AliT0CalibWalk():   TNamed(),
  44                                       fWalk(0),
  45                                       fAmpLEDRec(0),
  46                                       fQTC(0),
  47                                       fAmpLED(0),
  48                                       fCalibByData(kFALSE)
  49 {
  50   //
  51 }
  52
  53 //________________________________________________________________
  54 AliT0CalibWalk::AliT0CalibWalk(const char* name):TNamed(),
  55                                       fWalk(0),
  56                                       fAmpLEDRec(0),                                                                  fQTC(0),
  57                                       fAmpLED(0),
  58                                       fCalibByData(kFALSE)
  59
  60 {
  61   TString namst = "Calib_";
  62   namst += name;
  63   SetName(namst.Data());
  64   SetTitle(namst.Data());
  65
  66 }
  67
  68 //________________________________________________________________
  69 AliT0CalibWalk::AliT0CalibWalk(const AliT0CalibWalk& calibda) :
  70   TNamed(calibda),
  71   fWalk(0),
  72   fAmpLEDRec(0),
  73   fQTC(0),
  74   fAmpLED(0) ,
  75   fCalibByData(kFALSE)
  76 {
  77 // copy constructor
  78   SetName(calibda.GetName());
  79   SetTitle(calibda.GetName());
  80
  81
  82 }
  83
  84 //________________________________________________________________
  85 AliT0CalibWalk &AliT0CalibWalk::operator =(const AliT0CalibWalk& calibda)
  86 {
  87 // assignment operator
  88   SetName(calibda.GetName());
  89   SetTitle(calibda.GetName());
  90
  91   return *this;
  92 }
  93
  94 //________________________________________________________________
  95 AliT0CalibWalk::~AliT0CalibWalk()
  96 {
  97   //
  98 }
  99 //________________________________________________________________
 100
 101 Bool_t AliT0CalibWalk::MakeWalkCorrGraph(const char *laserFile)
 102 {
 103   //make walk corerction for preprocessor
 104   Float_t sigma,cfdmean, qtmean, ledmean;
 105   Bool_t ok=true;
 106   Float_t   mips[50];
 107   cout<<" @@@@ fCalibByData "<<fCalibByData<<endl;
 108
 109   gFile = TFile::Open(laserFile);
 110   if(!gFile) {
 111     AliError("No input laser data found ");
 112   }
 113   else
 114     {
 115       //      gFile->ls();
 116       TH1F* hAmp = (TH1F*) gFile->Get("hAmpLaser");
 117       Int_t nmips=0;
 118       for (Int_t ibin=0; ibin<2000; ibin++) {
 119         Float_t bincont = hAmp->GetBinContent(ibin);
 120         if(bincont>0){
 121           mips[nmips] = hAmp->GetXaxis()->GetBinCenter(ibin);
 122           cout<<ibin<<" bincont "<<bincont<<" amp "<< mips[nmips]<<endl;
 123           nmips++;
 124         }
 125       }
 126       /*
 127       if (nmips<17) {
 128         ok=false;
 129         return ok;
 130       }
 131       */
 132       Float_t x1[50], y1[50];
 133       Float_t x2[50], xx2[50],y2[50];
 134       Float_t xx1[50],yy1[50], xx[50];
 135
 136       Float_t cfd0 = 0;
 137
 138       for (Int_t ii=0; ii<nmips; ii++)
 139         x1[ii] = y1[ii] = x2[ii] = y2[ii] = 0;
 140
 141       for (Int_t i=0; i<24; i++)
 142         {
 143           cfd0 = 0;
 144           for (Int_t im=0; im<nmips; im++)
 145             {
 146               TString cfd = Form("hCFD%i_%i",i+1,im+1);
 147               TString qtc = Form("hQTC%i_%i",i+1,im+1);
 148               TString led = Form("hLED%i_%i",i+1,im+1);
 149
 150               TH1F *hCFD = (TH1F*) gFile->Get(cfd.Data()) ;
 151               TH1F *hLED = (TH1F*) gFile->Get(led.Data());
 152               TH1F *hQTC = (TH1F*) gFile->Get(qtc.Data()) ;
 153               //              hCFD->SetDirectory(0);
 154               //              hQTC->SetDirectory(0);
 155               //              hLED->SetDirectory(0);
 156               if(!hCFD )
 157                 AliWarning(Form(" no CFD data in LASER DA for channel %i for amplitude %f MIPs",i,mips[im]));
 158               if(!hQTC )
 159                 AliWarning(Form(" no QTC correction data in LASER DA for channel %i for amplitude %f MIPs",i,mips[im]));
 160               if(!hLED)
 161                 AliWarning(Form(" no LED correction data in LASER DA for channel %i for amplitude %f MIPs",i,mips[im]));
 162               if( hCFD && hCFD->GetEntries()<500 ) {
 163                 ok=false;
 164                 printf("no peak in CFD spectrum for PMT %i amplitude %i\n",i,im);
 165                 return ok;
 166               }
 167               if(hCFD && hCFD->GetEntries()>500 ) {
 168                 if( hCFD->GetRMS() >= 1.5)
 169                   GetMeanAndSigma(hCFD, cfdmean, sigma);
 170                 else
 171                   cfdmean = hCFD->GetMean();
 172
 173                 Int_t   maxBin = hCFD->GetMaximumBin();
 174                 Double_t  meanEstimate = hCFD->GetBinCenter( maxBin);
 175                 if(TMath::Abs(meanEstimate - cfdmean) > 20 ) cfdmean = meanEstimate;
 176                 if (im == 0) cfd0 = cfdmean;
 177                 y1[im] =  cfdmean - cfd0;
 178               }
 179               if(hQTC && hQTC->GetEntries()>500) {
 180                 GetMeanAndSigma(hQTC, qtmean, sigma);
 181
 182                 x1[im] = qtmean;
 183                 if( x1[im] == 0) {
 184                   ok=false;
 185                   printf("no peak in QTC signal for PMT %i amplitude %i\n",i,im);
 186                   return ok;
 187                 }
 188               }
 189
 190               if( hLED && hLED->GetEntries()>500) {
 191                 GetMeanAndSigma(hLED, ledmean, sigma);
 192               }
 193               else
 194                 {
 195                   //      ok=false;
 196                   printf("no peak in LED spectrum for PMT %i amplitude %i\n",i,im);
 197                   ledmean=0;
 198                   //  return ok;
 199                 }
 200               x2[im] = ledmean;
 201               xx2[im] = x2[nmips-im-1];
 202
 203                 xx[im]=mips[im];
 204                 if (hQTC) delete  hQTC;
 205                 if (hCFD) delete  hCFD;
 206                 if (hLED) delete  hLED;
 207
 208             }
 209
 210           for (Int_t imi=0; imi<nmips; imi++)
 211             {
 212               yy1[imi] = Float_t (mips[nmips-imi-1]);
 213               xx1[imi] = x2[nmips-imi-1];
 214               //              cout<<" LED rev "<<i<<" "<<imi<<" "<<xx1[imi]<<" "<< yy1[imi]<<"nmips-imi-1 = "<< nmips-imi-1<<endl;
 215             }
 216
 217           if(i==0) cout<<"Making graphs..."<<endl;
 218
 219       TGraph *grwalkqtc = new TGraph (nmips,x1,y1);
 220       grwalkqtc->SetTitle(Form("PMT%i",i));
 221       TGraph *grwalkled = new TGraph (nmips,x2,y1);
 222       grwalkled->SetTitle(Form("PMT%i",i));
 223       if(!fCalibByData)
 224         fWalk.AddAtAndExpand(grwalkqtc,i);
 225       fAmpLEDRec.AddAtAndExpand(grwalkled,i);
 226       //          cout<<" add walk "<<i<<endl;
 227
 228       //fit amplitude graphs to make comparison wth new one
 229       TGraph *grampled = new TGraph (nmips,xx1,yy1);
 230       TGraph *grqtc = new TGraph (nmips,x1,xx);
 231       fQTC.AddAtAndExpand(grqtc,i);
 232       fAmpLED.AddAtAndExpand(grampled,i);
 233       //          cout<<" add amp "<<i<<endl;
 234
 235       if(i==23)
 236         cout<<"Graphs created..."<<endl;
 237         }
 238     }
 239   Float_t xpoint, ypoint, xdata[250], ydata[250];
 240   Int_t ipmt;
 241   if(fCalibByData) {
 242     cout<<" read ingraph "<<endl;
 243     ifstream ingraph ("calibfit.txt");
 244     for (Int_t i=0; i<24; i++)
 245       {
 246         for (Int_t ip=0; ip<200; ip++)
 247           {
 248             ingraph>>ipmt>>xpoint>>ypoint;
 249             // cout<<i<<" "<<ipmt<<" "<<ip<<" "<< xpoint<<" "<<ypoint<<endl;
 250             xdata[ip]=xpoint;
 251             ydata[ip]=ypoint;
 252           }
 253         for (Int_t ip=200; ip<250; ip++) {
 254             xdata[ip] =xdata[ip-1]+10;
 255             ydata[ip]=ydata[199];
 256         }
 257
 258         TGraph *grwalkqtc = new TGraph (250,xdata,ydata);
 259         grwalkqtc->Print();
 260         grwalkqtc->SetTitle(Form("PMT%i",i));
 261         fWalk.AddAtAndExpand(grwalkqtc,i);
 262         for (Int_t ip=0; ip<250; ip++)
 263           {
 264             xdata[ip]=0;
 265             ydata[ip]=0;
 266           }
 267       }
 268   }
 269
 270
 271 return ok;
 272 }
 273
 274 void AliT0CalibWalk::GetMeanAndSigma(TH1F* hist, Float_t &mean, Float_t &sigma)
 275 {
 276
 277   const double window = 2.;  //fit window
 278
 279   double meanEstimate, sigmaEstimate;
 280   int maxBin;
 281   maxBin        =  hist->GetMaximumBin(); //position of maximum
 282   meanEstimate  =  hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
 283   sigmaEstimate = hist->GetRMS();
 284   TF1* fit= new TF1("fit","gaus", meanEstimate - window*sigmaEstimate, meanEstimate + window*sigmaEstimate);
 285   fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
 286   hist->Fit("fit","RQ","Q");
 287
 288   mean  = (Float_t) fit->GetParameter(1);
 289   sigma = (Float_t) fit->GetParameter(2);
 290   //  printf(" mean %f max %f sigma %f \n",mean, meanEstimate , sigma);
 291
 292   delete fit;
 293 }
 294
 295
 296