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 ClassImp(AliT0CalibWalk)
  41
  42 //________________________________________________________________
  43   AliT0CalibWalk::AliT0CalibWalk():   TNamed(),
  44                                       fWalk(0),
  45                                       fAmpLEDRec(0),
  46                                       fQTC(0),
  47                                       fAmpLED(0)
  48 {
  49   //
  50 }
  51
  52 //________________________________________________________________
  53 AliT0CalibWalk::AliT0CalibWalk(const char* name):TNamed(),
  54                                       fWalk(0),
  55                                       fAmpLEDRec(0),                                                                  fQTC(0),
  56                                       fAmpLED(0)
  57
  58 {
  59   TString namst = "Calib_";
  60   namst += name;
  61   SetName(namst.Data());
  62   SetTitle(namst.Data());
  63
  64 }
  65
  66 //________________________________________________________________
  67 AliT0CalibWalk::AliT0CalibWalk(const AliT0CalibWalk& calibda) :
  68   TNamed(calibda),
  69   fWalk(0),
  70   fAmpLEDRec(0),
  71   fQTC(0),
  72   fAmpLED(0)
  73
  74 {
  75 // copy constructor
  76   SetName(calibda.GetName());
  77   SetTitle(calibda.GetName());
  78
  79
  80 }
  81
  82 //________________________________________________________________
  83 AliT0CalibWalk &AliT0CalibWalk::operator =(const AliT0CalibWalk& calibda)
  84 {
  85 // assignment operator
  86   SetName(calibda.GetName());
  87   SetTitle(calibda.GetName());
  88
  89   return *this;
  90 }
  91
  92 //________________________________________________________________
  93 AliT0CalibWalk::~AliT0CalibWalk()
  94 {
  95   //
  96 }
  97 //________________________________________________________________
  98
  99 Bool_t AliT0CalibWalk::MakeWalkCorrGraph(const char *laserFile)
 100 {
 101   //make walk corerction for preprocessor
 102   Float_t sigma,cfdmean, qtmean, ledmean;
 103   Bool_t ok=true;
 104   Float_t   mips[50];
 105
 106   gFile = TFile::Open(laserFile);
 107   if(!gFile) {
 108     AliError("No input laser data found ");
 109   }
 110   else
 111     {
 112       //      gFile->ls();
 113       TH1F* hAmp = (TH1F*) gFile->Get("hAmpLaser");
 114       Int_t nmips=0;
 115       for (Int_t ibin=0; ibin<2000; ibin++) {
 116         Float_t bincont = hAmp->GetBinContent(ibin);
 117         if(bincont>0){
 118           mips[nmips] = hAmp->GetXaxis()->GetBinCenter(ibin);
 119           cout<<ibin<<" bincont "<<bincont<<" amp "<< mips[nmips]<<endl;
 120           nmips++;
 121         }
 122       }
 123
 124       if (nmips<17) {
 125         ok=false;
 126         return ok;
 127       }
 128
 129       Float_t x1[50], y1[50];
 130       Float_t x2[50], xx2[50],y2[50];
 131       Float_t xx1[50],yy1[50], xx[50];
 132
 133       Float_t cfd0 = 0;
 134
 135       for (Int_t ii=0; ii<nmips; ii++)
 136         x1[ii] = y1[ii] = x2[ii] = y2[ii] = 0;
 137
 138       for (Int_t i=0; i<24; i++)
 139         {
 140           cfd0 = 0;
 141           for (Int_t im=0; im<nmips; im++)
 142             {
 143               TString cfd = Form("hCFD%i_%i",i+1,im+1);
 144               TString qtc = Form("hQTC%i_%i",i+1,im+1);
 145               TString led = Form("hLED%i_%i",i+1,im+1);
 146
 147               TH1F *hCFD = (TH1F*) gFile->Get(cfd.Data()) ;
 148               TH1F *hLED = (TH1F*) gFile->Get(led.Data());
 149               TH1F *hQTC = (TH1F*) gFile->Get(qtc.Data()) ;
 150               //              hCFD->SetDirectory(0);
 151               //              hQTC->SetDirectory(0);
 152               //              hLED->SetDirectory(0);
 153               if(!hCFD )
 154                 AliWarning(Form(" no CFD data in LASER DA for channel %i for amplitude %f MIPs",i,mips[im]));
 155               if(!hQTC )
 156                 AliWarning(Form(" no QTC correction data in LASER DA for channel %i for amplitude %f MIPs",i,mips[im]));
 157               if(!hLED)
 158                 AliWarning(Form(" no LED correction data in LASER DA for channel %i for amplitude %f MIPs",i,mips[im]));
 159               if( hCFD && hCFD->GetEntries()<500 ) {
 160                 ok=false;
 161                 printf("no peak in CFD spectrum for PMT %i amplitude %i\n",i,im);
 162                 return ok;
 163               }
 164               if(hCFD && hCFD->GetEntries()>500 ) {
 165                 if( hCFD->GetRMS() >= 1.5)
 166                   GetMeanAndSigma(hCFD, cfdmean, sigma);
 167                 else
 168                   cfdmean = hCFD->GetMean();
 169
 170                 Int_t   maxBin = hCFD->GetMaximumBin();
 171                 Double_t  meanEstimate = hCFD->GetBinCenter( maxBin);
 172                 if(TMath::Abs(meanEstimate - cfdmean) > 20 ) cfdmean = meanEstimate;
 173                 if (im == 0) cfd0 = cfdmean;
 174                 y1[im] =  cfdmean - cfd0;
 175               }
 176               if(hQTC && hQTC->GetEntries()>500) {
 177                 GetMeanAndSigma(hQTC, qtmean, sigma);
 178
 179                 x1[im] = qtmean;
 180                 if( x1[im] == 0) {
 181                   ok=false;
 182                   printf("no peak in QTC signal for PMT %i amplitude %i\n",i,im);
 183                   return ok;
 184                 }
 185               }
 186
 187               if( hLED && hLED->GetEntries()>500) {
 188                 GetMeanAndSigma(hLED, ledmean, sigma);
 189               }
 190               else
 191                 {
 192                   ok=false;
 193                   printf("no peak in LED spectrum for PMT %i amplitude %i\n",i,im);
 194                   return ok;
 195                 }
 196               x2[im] = ledmean;
 197               xx2[im] = x2[nmips-im-1];
 198
 199                 xx[im]=mips[im];
 200                 if (hQTC) delete  hQTC;
 201                 if (hCFD) delete  hCFD;
 202                 if (hLED) delete  hLED;
 203
 204             }
 205
 206           for (Int_t imi=0; imi<nmips; imi++)
 207             {
 208               yy1[imi] = Float_t (mips[nmips-imi-1]);
 209               xx1[imi] = x2[nmips-imi-1];
 210               //              cout<<" LED rev "<<i<<" "<<imi<<" "<<xx1[imi]<<" "<< yy1[imi]<<"nmips-imi-1 = "<< nmips-imi-1<<endl;
 211             }
 212
 213           if(i==0) cout<<"Making graphs..."<<endl;
 214
 215       TGraph *grwalkqtc = new TGraph (nmips,x1,y1);
 216       grwalkqtc->SetTitle(Form("PMT%i",i));
 217       TGraph *grwalkled = new TGraph (nmips,x2,y1);
 218       grwalkled->SetTitle(Form("PMT%i",i));
 219       fWalk.AddAtAndExpand(grwalkqtc,i);
 220       fAmpLEDRec.AddAtAndExpand(grwalkled,i);
 221       //          cout<<" add walk "<<i<<endl;
 222
 223       //fit amplitude graphs to make comparison wth new one
 224       TGraph *grampled = new TGraph (nmips,xx1,yy1);
 225       TGraph *grqtc = new TGraph (nmips,x1,xx);
 226       fQTC.AddAtAndExpand(grqtc,i);
 227       fAmpLED.AddAtAndExpand(grampled,i);
 228       //          cout<<" add amp "<<i<<endl;
 229
 230       if(i==23)
 231         cout<<"Graphs created..."<<endl;
 232         }
 233     } //if gFile exits
 234
 235   return ok;
 236 }
 237
 238 void AliT0CalibWalk::GetMeanAndSigma(TH1F* hist, Float_t &mean, Float_t &sigma)
 239 {
 240
 241   const double window = 2.;  //fit window
 242
 243   double meanEstimate, sigmaEstimate;
 244   int maxBin;
 245   maxBin        =  hist->GetMaximumBin(); //position of maximum
 246   meanEstimate  =  hist->GetBinCenter( maxBin); // mean of gaussian sitting in maximum
 247   sigmaEstimate = hist->GetRMS();
 248   TF1* fit= new TF1("fit","gaus", meanEstimate - window*sigmaEstimate, meanEstimate + window*sigmaEstimate);
 249   fit->SetParameters(hist->GetBinContent(maxBin), meanEstimate, sigmaEstimate);
 250   hist->Fit("fit","RQ","Q");
 251
 252   mean  = (Float_t) fit->GetParameter(1);
 253   sigma = (Float_t) fit->GetParameter(2);
 254   printf(" mean %f max %f sigma %f \n",mean, meanEstimate , sigma);
 255
 256   delete fit;
 257 }
 258
 259
 260