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   *
   9  * without fee, provided that the above copyright notice appears in all   *
  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 using std::ifstream;
  41 ClassImp(AliT0CalibWalk)
  42
  43 //________________________________________________________________
  44   AliT0CalibWalk::AliT0CalibWalk():   TNamed(),
  45                                       fWalk(0),
  46                                       fAmpLEDRec(0),
  47                                       fQTC(0),
  48                                       fAmpLED(0),
  49                                       fCalibByData(kFALSE)
  50 {
  51   //
  52 }
  53
  54 //________________________________________________________________
  55 AliT0CalibWalk::AliT0CalibWalk(const char* name):TNamed(),
  56                                       fWalk(0),
  57                                       fAmpLEDRec(0),                                                                  fQTC(0),
  58                                       fAmpLED(0),
  59                                       fCalibByData(kFALSE)
  60
  61 {
  62   TString namst = "Calib_";
  63   namst += name;
  64   SetName(namst.Data());
  65   SetTitle(namst.Data());
  66
  67 }
  68
  69 //________________________________________________________________
  70 AliT0CalibWalk::AliT0CalibWalk(const AliT0CalibWalk& calibda) :
  71   TNamed(calibda),
  72   fWalk(0),
  73   fAmpLEDRec(0),
  74   fQTC(0),
  75   fAmpLED(0) ,
  76   fCalibByData(kFALSE)
  77 {
  78 // copy constructor
  79   SetName(calibda.GetName());
  80   SetTitle(calibda.GetName());
  81
  82
  83 }
  84
  85 //________________________________________________________________
  86 AliT0CalibWalk &AliT0CalibWalk::operator =(const AliT0CalibWalk& calibda)
  87 {
  88 // assignment operator
  89   SetName(calibda.GetName());
  90   SetTitle(calibda.GetName());
  91
  92   return *this;
  93 }
  94
  95 //________________________________________________________________
  96 AliT0CalibWalk::~AliT0CalibWalk()
  97 {
  98   //
  99 }
 100 //________________________________________________________________
 101
 102 Bool_t AliT0CalibWalk::MakeWalkCorrGraph(const char *laserFile)
 103 {
 104   //make walk corerction for preprocessor
 105   Float_t sigma,cfdmean, qtmean, ledmean;
 106   Bool_t ok=true;
 107   Float_t   mips[50];
 108   cout<<" @@@@ fCalibByData "<<fCalibByData<<endl;
 109
 110   gFile = TFile::Open(laserFile);
 111   if(!gFile) {
 112     AliError("No input laser data found ");
 113   }
 114   else
 115     {
 116       //      gFile->ls();
 117       TH1F* hAmp = (TH1F*) gFile->Get("hAmpLaser");
 118       Int_t nmips=0;
 119       for (Int_t ibin=0; ibin<2000; ibin++) {
 120         Float_t bincont = hAmp->GetBinContent(ibin);
 121         if(bincont>0){
 122           mips[nmips] = hAmp->GetXaxis()->GetBinCenter(ibin);
 123           cout<<ibin<<" bincont "<<bincont<<" amp "<< mips[nmips]<<endl;
 124           nmips++;
 125         }
 126       }
 127       /*
 128       if (nmips<17) {
 129         ok=false;
 130         return ok;
 131       }
 132       */
 133       Float_t x1[50], y1[50];
 134       Float_t x2[50], xx2[50],y2[50];
 135       Float_t xx1[50],yy1[50], xx[50];
 136
 137       Float_t cfd0 = 0;
 138
 139       for (Int_t ii=0; ii<nmips; ii++)
 140         x1[ii] = y1[ii] = x2[ii] = y2[ii] = 0;
 141
 142       for (Int_t i=0; i<24; i++)
 143         {
 144           cfd0 = 0;
 145           for (Int_t im=0; im<nmips; im++)
 146             {
 147               TString cfd = Form("hCFD%i_%i",i+1,im+1);
 148               TString qtc = Form("hQTC%i_%i",i+1,im+1);
 149               TString led = Form("hLED%i_%i",i+1,im+1);
 150
 151               TH1F *hCFD = (TH1F*) gFile->Get(cfd.Data()) ;
 152               TH1F *hLED = (TH1F*) gFile->Get(led.Data());
 153               TH1F *hQTC = (TH1F*) gFile->Get(qtc.Data()) ;
 154               //              hCFD->SetDirectory(0);
 155               //              hQTC->SetDirectory(0);
 156               //              hLED->SetDirectory(0);
 157               if(!hCFD )
 158                 AliWarning(Form(" no CFD data in LASER DA for channel %i for amplitude %f MIPs",i,mips[im]));
 159               if(!hQTC )
 160                 AliWarning(Form(" no QTC correction data in LASER DA for channel %i for amplitude %f MIPs",i,mips[im]));
 161               if(!hLED)
 162                 AliWarning(Form(" no LED correction data in LASER DA for channel %i for amplitude %f MIPs",i,mips[im]));
 163               if( hCFD && hCFD->GetEntries()<500 ) {
 164                 ok=false;
 165                 printf("no peak in CFD spectrum for PMT %i amplitude %i\n",i,im);
 166                 return ok;
 167               }
 168               if(hCFD && hCFD->GetEntries()>500 ) {
 169                 if( hCFD->GetRMS() >= 1.5)
 170                   GetMeanAndSigma(hCFD, cfdmean, sigma);
 171                 else
 172                   cfdmean = hCFD->GetMean();
 173
 174                 Int_t   maxBin = hCFD->GetMaximumBin();
 175                 Double_t  meanEstimate = hCFD->GetBinCenter( maxBin);
 176                 if(TMath::Abs(meanEstimate - cfdmean) > 20 ) cfdmean = meanEstimate;
 177                 if (im == 0) cfd0 = cfdmean;
 178                 y1[im] =  cfdmean - cfd0;
 179               }
 180               if(hQTC && hQTC->GetEntries()>500) {
 181                 GetMeanAndSigma(hQTC, qtmean, sigma);
 182
 183                 x1[im] = qtmean;
 184                 if( x1[im] == 0) {
 185                   ok=false;
 186                   printf("no peak in QTC signal for PMT %i amplitude %i\n",i,im);
 187                   return ok;
 188                 }
 189               }
 190
 191               if( hLED && hLED->GetEntries()>500) {
 192                 GetMeanAndSigma(hLED, ledmean, sigma);
 193               }
 194               else
 195                 {
 196                   //      ok=false;
 197                   printf("no peak in LED spectrum for PMT %i amplitude %i\n",i,im);
 198                   ledmean=0;
 199                   //  return ok;
 200                 }
 201               x2[im] = ledmean;
 202               xx2[im] = x2[nmips-im-1];
 203
 204                 xx[im]=mips[im];
 205                 if (hQTC) delete  hQTC;
 206                 if (hCFD) delete  hCFD;
 207                 if (hLED) delete  hLED;
 208
 209             }
 210
 211           for (Int_t imi=0; imi<nmips; imi++)
 212             {
 213               yy1[imi] = Float_t (mips[nmips-imi-1]);
 214               xx1[imi] = x2[nmips-imi-1];
 215               //              cout<<" LED rev "<<i<<" "<<imi<<" "<<xx1[imi]<<" "<< yy1[imi]<<"nmips-imi-1 = "<< nmips-imi-1<<endl;
 216             }
 217
 218           if(i==0) cout<<"Making graphs..."<<endl;
 219
 220       TGraph *grwalkqtc = new TGraph (nmips,x1,y1);
 221       grwalkqtc->SetTitle(Form("PMT%i",i));
 222       TGraph *grwalkled = new TGraph (nmips,x2,y1);
 223       grwalkled->SetTitle(Form("PMT%i",i));
 224       if(!fCalibByData)
 225         fWalk.AddAtAndExpand(grwalkqtc,i);
 226       fAmpLEDRec.AddAtAndExpand(grwalkled,i);
 227       //          cout<<" add walk "<<i<<endl;
 228
 229       //fit amplitude graphs to make comparison wth new one
 230       TGraph *grampled = new TGraph (nmips,xx1,yy1);
 231       TGraph *grqtc = new TGraph (nmips,x1,xx);
 232       fQTC.AddAtAndExpand(grqtc,i);
 233       fAmpLED.AddAtAndExpand(grampled,i);
 234       //          cout<<" add amp "<<i<<endl;
 235
 236       if(i==23)
 237         cout<<"Graphs created..."<<endl;
 238         }
 239     }
 240   Float_t xpoint, ypoint, xdata[250], ydata[250];
 241   Int_t ipmt;
 242   if(fCalibByData) {
 243     cout<<" read ingraph "<<endl;
 244     ifstream ingraph ("calibfit.txt");
 245     for (Int_t i=0; i<24; i++)
 246       {
 247         for (Int_t ip=0; ip<200; ip++)
 248           {
 249             ingraph>>ipmt>>xpoint>>ypoint;
 250             // cout<<i<<" "<<ipmt<<" "<<ip<<" "<< xpoint<<" "<<ypoint<<endl;
 251             xdata[ip]=xpoint;
 252             ydata[ip]=ypoint;
 253           }
 254         for (Int_t ip=200; ip<250; ip++) {
 255             xdata[ip] =xdata[ip-1]+10;
 256             ydata[ip]=ydata[199];
 257         }
 258
 259         TGraph *grwalkqtc = new TGraph (250,xdata,ydata);
 260         grwalkqtc->Print();
 261         grwalkqtc->SetTitle(Form("PMT%i",i));
 262         fWalk.AddAtAndExpand(grwalkqtc,i);
 263         for (Int_t ip=0; ip<250; ip++)
 264           {
 265             xdata[ip]=0;
 266             ydata[ip]=0;
 267           }
 268       }
 269   }
 270
 271
 272 return ok;
 273 }
 274
 275 void AliT0CalibWalk::GetMeanAndSigma(TH1F* hist, Float_t &mean, Float_t &sigma)
 276 {
 277
 278   const double window = 2.;  //fit window
 279
 280   double meanEstimate, sigmaEstimate;
 281   int maxBin;
 282   maxBin        =  hist->GetMaximumBin(); //position of maximum
 283   meanEstimate  =  hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
 284   sigmaEstimate = hist->GetRMS();
 285   TF1* fit= new TF1("fit","gaus", meanEstimate - window*sigmaEstimate, meanEstimate + window*sigmaEstimate);
 286   fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
 287   hist->Fit("fit","RQ","Q");
 288
 289   mean  = (Float_t) fit->GetParameter(1);
 290   sigma = (Float_t) fit->GetParameter(2);
 291   //  printf(" mean %f max %f sigma %f \n",mean, meanEstimate , sigma);
 292
 293   delete fit;
 294 }
 295
 296
 297