ITS/AliITSOnlineSDDBase.cxx

   1 /**************************************************************************
   2  * Copyright(c) 2007-2009, 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 #include "AliITSOnlineSDDBase.h"
  16 #include <TH2F.h>
  17 #include <TMath.h>
  18
  19
  20 ///////////////////////////////////////////////////////////////////
  21 //                                                               //
  22 // Implementation of the class used for SDD baselines            //
  23 // and noise analysis                                            //
  24 // Origin: F.Prino, Torino, prino@to.infn.it                     //
  25 //                                                               //
  26 ///////////////////////////////////////////////////////////////////
  27
  28 /*  $Id$   */
  29
  30 const Int_t AliITSOnlineSDDBase::fgkMaxCorr=63; // 6 but correction
  31
  32 ClassImp(AliITSOnlineSDDBase)
  33 //______________________________________________________________________
  34   AliITSOnlineSDDBase::AliITSOnlineSDDBase():AliITSOnlineSDD(),fNEvents(0),fMinBaseline(0.),fMaxBaseline(0.),fMinRawNoise(0.),fMaxRawNoise(0.),fNSigmaNoise(0.),fGoldenBaseline(0.),fLowThrFact(0.),fHighThrFact(0.)
  35 {
  36   // default constructor
  37   Reset();
  38   SetMinBaseline();
  39   SetMaxBaseline();
  40   SetMinRawNoise();
  41   SetMaxRawNoise();
  42   SetNSigmaNoise();
  43   SetGoldenBaselineValue();
  44   SetZeroSuppThresholds();
  45 }
  46 //______________________________________________________________________
  47 AliITSOnlineSDDBase::AliITSOnlineSDDBase(Int_t nddl, Int_t ncarlos, Int_t sid):AliITSOnlineSDD(nddl,ncarlos,sid),fNEvents(0),fMinBaseline(0.),fMaxBaseline(0.),fMinRawNoise(0.),fMaxRawNoise(0.),fNSigmaNoise(0.),fGoldenBaseline(0.),fLowThrFact(0.),fHighThrFact(0.)
  48 {
  49   // default constructor
  50   Reset();
  51   SetMinBaseline();
  52   SetMaxBaseline();
  53   SetMinRawNoise();
  54   SetMaxRawNoise();
  55   SetNSigmaNoise();
  56   SetGoldenBaselineValue();
  57   SetZeroSuppThresholds();
  58 }
  59 //______________________________________________________________________
  60 AliITSOnlineSDDBase::~AliITSOnlineSDDBase(){
  61   // Destructor
  62 }
  63 //______________________________________________________________________
  64 void AliITSOnlineSDDBase::Reset(){
  65   //
  66   fNEvents=0;
  67   for(Int_t i=0;i<fgkNAnodes;i++){
  68     fGoodAnode[i]=1;
  69     fSumBaseline[i]=0.;
  70     fSumRawNoise[i]=0.;
  71     fSumCMN[i]=0.;
  72   }
  73 }
  74 //______________________________________________________________________
  75 void  AliITSOnlineSDDBase::ValidateAnodes(){
  76   //
  77   for(Int_t ian=0;ian<fgkNAnodes;ian++){
  78     fGoodAnode[ian]=1;
  79     Float_t basel=GetAnodeBaseline(ian);
  80     Float_t rawn=GetAnodeRawNoise(ian);
  81     Float_t ratio=0.;
  82     if(rawn>0) ratio=basel/rawn;
  83     if(basel>fMaxBaseline || basel<fMinBaseline) fGoodAnode[ian]=0;
  84     else if(rawn>fMaxRawNoise || rawn<fMinRawNoise) fGoodAnode[ian]=0;
  85     else if(rawn>fNSigmaNoise*CalcMeanRawNoise()) fGoodAnode[ian]=0;
  86     else if(ratio<3.) fGoodAnode[ian]=0;
  87   }
  88 }
  89
  90 //______________________________________________________________________
  91 void AliITSOnlineSDDBase::AddEvent(TH2F* hrawd){
  92   //
  93   fNEvents++;
  94   const Int_t kTimeBins=fLastGoodTB+1;
  95   Float_t sum[fgkNAnodes];
  96   for(Int_t ian=0;ian<fgkNAnodes;ian++){
  97     Float_t sumQ=0.;
  98     sum[ian]=0.;
  99     Int_t cnt=0;
 100     for(Int_t itb=fFirstGoodTB;itb<=fLastGoodTB;itb++){
 101       Float_t cbin=hrawd->GetBinContent(itb+1,ian+1);
 102       sum[ian]+=cbin;
 103       sumQ+=cbin*cbin;
 104       cnt++;
 105     }
 106     sum[ian]/=(Float_t)cnt;
 107     sumQ/=(Float_t)cnt;
 108     fSumBaseline[ian]+=sum[ian];
 109     fSumRawNoise[ian]+=sumQ;
 110   }
 111   if(fNEvents==1) ValidateAnodes();
 112
 113   Float_t *cmnEven = new Float_t[kTimeBins];
 114   Float_t *cmnOdd  = new Float_t[kTimeBins];
 115   for(Int_t itb=fFirstGoodTB;itb<=fLastGoodTB;itb++){
 116     Float_t sumEven=0., sumOdd=0.;
 117     Int_t countEven=0,countOdd=0;
 118     for(Int_t ian=0;ian<fgkNAnodes;ian+=2){
 119       if(!fGoodAnode[ian]) continue;
 120       sumEven+=hrawd->GetBinContent(itb+1,ian+1)-sum[ian];
 121       countEven++;
 122     }
 123     for(Int_t ian=1;ian<fgkNAnodes;ian+=2){
 124       if(!fGoodAnode[ian]) continue;
 125       sumOdd+=hrawd->GetBinContent(itb+1,ian+1)-sum[ian];
 126       countOdd++;
 127     }
 128     if(countEven>0) cmnEven[itb]=sumEven/countEven;
 129     if(countOdd>0) cmnOdd[itb]=sumOdd/countOdd;
 130   }
 131   for(Int_t ian=0;ian<fgkNAnodes;ian++){
 132     Float_t num=0.,den=0.;
 133     if(!fGoodAnode[ian]) continue;
 134     for(Int_t itb=fFirstGoodTB;itb<=fLastGoodTB;itb++){
 135       Float_t cmnCoef=cmnOdd[itb];
 136       if(ian%2==0) cmnCoef=cmnEven[itb];
 137       num+=(hrawd->GetBinContent(itb+1,ian+1)-sum[ian])*cmnCoef;
 138       den+=cmnCoef*cmnCoef;
 139     }
 140     if(den!=0) fSumCMN[ian]+=num/den;
 141   }
 142
 143   delete [] cmnEven;
 144   delete [] cmnOdd;
 145 }
 146 //______________________________________________________________________
 147 void AliITSOnlineSDDBase::GetMinAndMaxBaseline(Float_t &basMin, Float_t &basMax) const {
 148   // fills mininum and maximum baseline values
 149   basMin=1008.;
 150   basMax=0.;
 151   for(Int_t ian=0;ian<fgkNAnodes;ian++){
 152     if(!fGoodAnode[ian]) continue;
 153     Float_t bas=GetAnodeBaseline(ian);
 154     if(bas>0 && bas < basMin) basMin=bas;
 155     if(bas>0 && bas > basMax) basMax=bas;
 156   }
 157 }
 158 //______________________________________________________________________
 159 Float_t AliITSOnlineSDDBase::GetMinimumBaseline() const {
 160   // returns anode with minum baseline value in hybrid
 161   Float_t basMin=1008.;
 162   for(Int_t ian=0;ian<fgkNAnodes;ian++){
 163     if(!fGoodAnode[ian]) continue;
 164     Float_t bas=GetAnodeBaseline(ian);
 165     if(bas>0 && bas < basMin) basMin=bas;
 166   }
 167   return basMin;
 168 }
 169 //______________________________________________________________________
 170 Float_t AliITSOnlineSDDBase::CalcMeanRawNoise() const{
 171   //
 172   Float_t meanns=0.;
 173   Int_t cnt=0;
 174   for(Int_t ian=0;ian<fgkNAnodes;ian++){
 175     if(!fGoodAnode[ian]) continue;
 176     meanns+=GetAnodeRawNoise(ian);
 177     cnt++;
 178   }
 179   if(cnt>0) meanns/=(Float_t)cnt;
 180   return meanns;
 181 }
 182 //______________________________________________________________________
 183 void AliITSOnlineSDDBase::WriteToASCII(){
 184   //
 185   Char_t outfilnam[100];
 186   Float_t basMin,basMax;
 187   GetMinAndMaxBaseline(basMin,basMax);
 188   Float_t finalVal=basMin;
 189   if(basMin>fGoldenBaseline && basMax<fGoldenBaseline+fgkMaxCorr) finalVal=fGoldenBaseline;
 190   if(basMax<basMin+fgkMaxCorr && basMax>fGoldenBaseline+fgkMaxCorr) finalVal=basMax-fgkMaxCorr;
 191
 192   Float_t avNoise=CalcMeanRawNoise();
 193   Int_t thrL=(Int_t)(finalVal+fLowThrFact*avNoise+0.5);
 194   Int_t thrH=(Int_t)(finalVal+fHighThrFact*avNoise+0.5);
 195   if(CountGoodAnodes()==0) thrH=255;
 196
 197   sprintf(outfilnam,"SDDbase_step1_ddl%02dc%02d_sid%d.data",fDDL,fCarlos,fSide);
 198   FILE* outf=fopen(outfilnam,"w");
 199   fprintf(outf,"%d\n",thrH);
 200   fprintf(outf,"%d\n",thrL);
 201   Float_t corrnoise=2.;
 202   for(Int_t ian=0;ian<fgkNAnodes;ian++){
 203     Float_t bas=GetAnodeBaseline(ian);
 204     Int_t corr=(Int_t)(bas-finalVal+0.5);
 205     if(corr>fgkMaxCorr) corr=fgkMaxCorr; // only 6 bits in jtag for correction
 206     if(corr<0) corr=0; // avoid negative numbers
 207     fprintf(outf,"%d %d %11.6f %d %d %11.6f %11.6f %11.6f\n",ian,IsAnodeGood(ian),GetAnodeBaseline(ian),(Int_t)finalVal,corr,GetAnodeRawNoise(ian),GetAnodeCommonMode(ian),corrnoise);
 208   }
 209   fclose(outf);
 210 }