ITS/AliITSOnlineSDDInjectors.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   *
   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 #include <TFile.h>
  16 #include "AliITSOnlineSDDInjectors.h"
  17 #include "AliLog.h"
  18 #include <TH2F.h>
  19 #include <TF1.h>
  20 #include <TGraphErrors.h>
  21 #include <TMath.h>
  22
  23 /* $Id$ */
  24
  25 ///////////////////////////////////////////////////////////////////
  26 //                                                               //
  27 // Implementation of the class used for SDD injector analysis    //
  28 // Origin: F.Prino, Torino, prino@to.infn.it                     //
  29 //                                                               //
  30 ///////////////////////////////////////////////////////////////////
  31
  32 ClassImp(AliITSOnlineSDDInjectors)
  33
  34 const Float_t AliITSOnlineSDDInjectors::fgkSaturation = 1008.;
  35 const Float_t AliITSOnlineSDDInjectors::fgkDefaultLThreshold = 5.;
  36 const Float_t AliITSOnlineSDDInjectors::fgkDefaultHThreshold = 25.;
  37 const Float_t AliITSOnlineSDDInjectors::fgkDefaultMinSpeed = 5.5;
  38 const Float_t AliITSOnlineSDDInjectors::fgkDefaultMaxSpeed = 9.0;
  39 const Float_t AliITSOnlineSDDInjectors::fgkDefaultMaxErr = 1.5;
  40 const Int_t   AliITSOnlineSDDInjectors::fgkDefaultPolDegree = 3;
  41 const Float_t AliITSOnlineSDDInjectors::fgkDefaultTimeStep = 50.;
  42 const UShort_t AliITSOnlineSDDInjectors::fgkDefaultTbMin[kInjLines] = {10,50,100};
  43 const UShort_t AliITSOnlineSDDInjectors::fgkDefaultTbMax[kInjLines] = {20,70,120};
  44
  45 //______________________________________________________________________
  46 AliITSOnlineSDDInjectors::AliITSOnlineSDDInjectors():AliITSOnlineSDD(),fHisto(),fTbZero(0.),fRMSTbZero(0.),fNEvents(0),fParam(),fPolDegree(0),fActualPolDegree(0),fMinDriftSpeed(0.),fMaxDriftSpeed(0.),fMaxDriftSpeedErr(0.),fLowThreshold(0.),fHighThreshold(0.),fFirstPadForFit(0),fLastPadForFit(0),fPadStatusCutForFit(0),fTimeStep(0.),fUseTimeZeroSignal(kFALSE)
  47 {
  48   // default constructor
  49   SetPositions();
  50   SetDefaults();
  51   SetTimeStep(fgkDefaultTimeStep);
  52 }
  53 //______________________________________________________________________
  54 AliITSOnlineSDDInjectors::AliITSOnlineSDDInjectors(Int_t nddl, Int_t ncarlos, Int_t sid):AliITSOnlineSDD(nddl,ncarlos,sid),fHisto(),fTbZero(0.),fRMSTbZero(0.),fNEvents(0),fParam(),fPolDegree(0),fActualPolDegree(0),fMinDriftSpeed(0.),fMaxDriftSpeed(0.),fMaxDriftSpeedErr(0.),fLowThreshold(0.),fHighThreshold(0.),fFirstPadForFit(0),fLastPadForFit(0),fPadStatusCutForFit(0),fTimeStep(0.),fUseTimeZeroSignal(kFALSE)
  55 {
  56 // standard constructor
  57   SetPositions();
  58   SetDefaults();
  59   SetTimeStep(fgkDefaultTimeStep);
  60 }
  61 //______________________________________________________________________
  62 AliITSOnlineSDDInjectors::~AliITSOnlineSDDInjectors(){
  63   // Destructor
  64   // fHisto should not be deleted here because it points to an histo created
  65   // by the external code which calls the method AnalyzeEvent
  66   // if(fHisto) delete fHisto;
  67   if(fParam) delete [] fParam;
  68 }
  69 //______________________________________________________________________
  70 void AliITSOnlineSDDInjectors::SetDefaults(){
  71   for(Int_t i=0;i<kInjLines;i++) {
  72     SetInjLineRange(i,fgkDefaultTbMin[i],fgkDefaultTbMax[i]);
  73     SetUseLine(i,kTRUE);
  74   }
  75   SetThresholds(fgkDefaultLThreshold,fgkDefaultHThreshold);
  76   SetPolDegree(fgkDefaultPolDegree);
  77   SetMinDriftSpeed(fgkDefaultMinSpeed);
  78   SetMaxDriftSpeed(fgkDefaultMaxSpeed);
  79   SetMaxDriftSpeedErr(fgkDefaultMaxErr);
  80   SetFitLimits(1,kInjPads-2); // exclude first and last pad
  81   SetPadStatusCutForFit();
  82 }
  83 //______________________________________________________________________
  84 void AliITSOnlineSDDInjectors::SetPositions(){
  85   //
  86   Double_t xLinFromCenterUm[kInjLines]={31860.,17460.,660.};
  87   Double_t xAnodeFromCenterUm=35085;
  88   for(Int_t i=0;i<kInjLines;i++){
  89     fPosition[i]=xAnodeFromCenterUm-xLinFromCenterUm[i];
  90     fPosition[i]/=10000.; // from microns to cm
  91   }
  92 }
  93 //______________________________________________________________________
  94 void AliITSOnlineSDDInjectors::Reset(){
  95   //
  96   for(Int_t i=0;i<kInjPads;i++){
  97     fDriftSpeed[i]=0.;
  98     fDriftSpeedErr[i]=0.;
  99   }
 100   for(Int_t i=0;i<kInjPads;i++){
 101     for(Int_t j=0;j<kInjLines;j++){
 102       fGoodInj[i][j]=0;
 103       fCentroid[i][j]=0.;
 104       fRMSCentroid[i][j]=0.;
 105     }
 106   }
 107 }
 108 //______________________________________________________________________
 109 void AliITSOnlineSDDInjectors::AnalyzeEvent(TH2F* his){
 110   //
 111   AddEvent(his);
 112   FitDriftSpeedVsAnode();
 113 }
 114 //______________________________________________________________________
 115 void AliITSOnlineSDDInjectors::AddEvent(TH2F* his){
 116   // Add the drift speed from current event to the average value
 117   if(fNEvents==0){
 118     for(Int_t i=0;i<kInjPads;i++){
 119       fSumDriftSpeed[i]=0.;
 120       fSumSqDriftSpeed[i]=0.;
 121     }
 122   }
 123   Reset();
 124   fHisto=his;
 125   FindGoodInjectors();
 126   FindCentroids();
 127   CalcTimeBinZero();
 128   for(Int_t j=0;j<kInjPads;j++){
 129     CalcDriftSpeed(j);
 130     fSumDriftSpeed[j]+=fDriftSpeed[j];
 131     fSumSqDriftSpeed[j]+=fDriftSpeed[j]*fDriftSpeed[j];
 132   }
 133   ++fNEvents;
 134 }
 135 //______________________________________________________________________
 136 Double_t AliITSOnlineSDDInjectors::GetRMSDriftSpeed(Int_t ipad) const {
 137   //
 138   if(fNEvents<=1) return 0.;
 139   Double_t mean=fSumDriftSpeed[ipad]/(Double_t)fNEvents;
 140   Double_t diff=fSumSqDriftSpeed[ipad]/(Double_t)fNEvents-mean*mean;
 141   if(diff<0.) diff=0.;
 142   return TMath::Sqrt(diff);
 143 }
 144
 145 //______________________________________________________________________
 146 void AliITSOnlineSDDInjectors::FitMeanDriftSpeedVsAnode(){
 147   // Calculates
 148   if(fNEvents==0) return;
 149   for(Int_t i=0;i<kInjPads;i++){
 150     fDriftSpeed[i]=GetMeanDriftSpeed(i);
 151     if(fNEvents>1){
 152       Double_t rms=GetRMSDriftSpeed(i);
 153       if(rms>0.) fDriftSpeedErr[i]=rms/TMath::Sqrt(fNEvents);
 154     }
 155   }
 156   FitDriftSpeedVsAnode();
 157 }
 158 //______________________________________________________________________
 159 TGraphErrors* AliITSOnlineSDDInjectors::GetTimeVsDistGraph(Int_t jpad) const{
 160   //
 161   const Int_t kPts=kInjLines+1;
 162   Float_t x[kPts],y[kPts],ex[kPts],ey[kPts];
 163   x[0]=0.;
 164   ex[0]=0.;
 165   y[0]=fTbZero;
 166   ey[0]=0.;
 167   for(Int_t i=0;i<kInjLines;i++){
 168     x[i+1]=fPosition[i];
 169     ex[i+1]=0.;
 170     y[i+1]=fCentroid[jpad][i];
 171     ey[i+1]=fRMSCentroid[jpad][i];
 172   }
 173   TGraphErrors *g=new TGraphErrors(4,x,y,ex,ey);
 174   return g;
 175 }
 176
 177 //______________________________________________________________________
 178 TGraphErrors* AliITSOnlineSDDInjectors::GetDriftSpeedGraph() const{
 179   //
 180   Int_t ipt=0;
 181   TGraphErrors *g=new TGraphErrors(0);
 182   for(Int_t i=0;i<kInjPads;i++){
 183     if(fDriftSpeed[i]>0){
 184       g->SetPoint(ipt,GetAnodeNumber(i),fDriftSpeed[i]);
 185       g->SetPointError(ipt,0,fDriftSpeedErr[i]);
 186       ipt++;
 187     }
 188   }
 189   return g;
 190 }
 191 //______________________________________________________________________
 192 TGraphErrors* AliITSOnlineSDDInjectors::GetSelectedDriftSpeedGraph(Int_t minAcceptStatus) const{
 193   // TGraphErrors with only pads with status of injector >= minAcceptStatus
 194   Int_t ipt=0;
 195   TGraphErrors *g=new TGraphErrors(0);
 196   for(Int_t i=0;i<kInjPads;i++){
 197     Int_t padStatus = GetInjPadStatus(i);
 198     if(fDriftSpeed[i]>0 && padStatus >= minAcceptStatus ){
 199       g->SetPoint(ipt,GetAnodeNumber(i),fDriftSpeed[i]);
 200       g->SetPointError(ipt,0,fDriftSpeedErr[i]);
 201       ipt++;
 202     }
 203   }
 204   return g;
 205 }
 206 //______________________________________________________________________
 207 void AliITSOnlineSDDInjectors::CalcTimeBinZero(){
 208   // Get time zero from trigger signal
 209   Double_t tzero=0.,intCont=0.,rmsPeak=0.;
 210   Bool_t isTbUsed[256];
 211   Int_t nTbUsed=0;
 212   for(Int_t i=0;i<256;i++) isTbUsed[i]=0;
 213   for(Int_t ian=0;ian<fgkNAnodes;ian++){
 214     for(Int_t itb=1;itb<fTbMin[0];itb++){
 215       Double_t cont=fHisto->GetBinContent(itb,ian+1);
 216       Double_t contm1=fHisto->GetBinContent(itb+1,ian+1);
 217       Double_t contp1=fHisto->GetBinContent(itb-1,ian+1);
 218       if(cont>fLowThreshold){
 219         if(contm1>fHighThreshold || cont>fHighThreshold || contp1>fHighThreshold){
 220           tzero+=cont*float(itb);
 221           rmsPeak+=cont*float(itb)*float(itb);
 222           intCont+=cont;
 223           if(!isTbUsed[itb]){
 224             isTbUsed[itb]=1;
 225             ++nTbUsed;
 226           }
 227         }
 228       }
 229     }
 230   }
 231   if(intCont>0){
 232     fTbZero=tzero/intCont;
 233     fRMSTbZero=TMath::Sqrt(rmsPeak/intCont-fTbZero*fTbZero);
 234   }
 235   if(nTbUsed==1) fRMSTbZero=0.5;
 236 }
 237
 238 //______________________________________________________________________
 239 void AliITSOnlineSDDInjectors::FitDriftSpeedVsAnode(){
 240   // fits the anode dependence of drift speed
 241
 242   Float_t rangeForMax[2]={78.,178.};
 243   PolyFit(fPolDegree);
 244   fActualPolDegree=fPolDegree;
 245   if(fPolDegree==3){
 246     Double_t deltasq=fParam[2]*fParam[2]-3*fParam[1]*fParam[3];
 247     Double_t zero1=-999.;
 248     Double_t zero2=-999.;
 249     if(deltasq>=0. && TMath::Abs(fParam[3])>0.){
 250       Double_t delta=TMath::Sqrt(deltasq);
 251       zero1=(-fParam[2]+delta)/3./fParam[3];
 252       zero2=(-fParam[2]-delta)/3./fParam[3];
 253     }
 254     Bool_t twoZeroes=kFALSE;
 255     Bool_t oneZero=kFALSE;
 256     if(zero1>0. && zero1<256. && zero2>0. && zero2<256.) twoZeroes=kTRUE;
 257     if(zero1>rangeForMax[0] && zero1<rangeForMax[1]) oneZero=kTRUE;
 258     if(zero2>rangeForMax[0] && zero2<rangeForMax[1]) oneZero=kTRUE;
 259     if(!oneZero || twoZeroes){
 260       PolyFit(2);
 261       Double_t xmax=-999.;
 262       if(fParam[2]<0.) xmax=-fParam[1]/2./fParam[2];
 263       if(xmax>rangeForMax[0] && xmax<rangeForMax[1]){
 264         fActualPolDegree=2;
 265       }else{
 266         Double_t averSpeed=0.;
 267         Double_t sumWei=0.;
 268         Int_t nUsedPts=0;
 269         for(Int_t jpad=fFirstPadForFit; jpad<=fLastPadForFit; jpad++){
 270           if(fDriftSpeed[jpad]>0 && GetInjPadStatus(jpad)>fPadStatusCutForFit){
 271             Double_t wei=1./fDriftSpeedErr[jpad]/fDriftSpeedErr[jpad];
 272             averSpeed+=wei*fDriftSpeed[jpad];
 273             sumWei+=wei;
 274             nUsedPts++;
 275           }
 276         }
 277         if(sumWei>0.) averSpeed/=sumWei;
 278         if(nUsedPts<fPolDegree+1) averSpeed=0;
 279         fParam[0]=averSpeed;
 280         for(Int_t i=1; i < fPolDegree+1; i++) fParam[i]=0.;
 281         fActualPolDegree=0;
 282       }
 283     }
 284   }
 285 }
 286 //______________________________________________________________________
 287 void AliITSOnlineSDDInjectors::PolyFit(Int_t degree){
 288   // fits the anode dependence of drift speed with a polynomial function
 289   const Int_t kNn=degree+1;
 290   const Int_t kDimens=fPolDegree+1;
 291
 292   Double_t **mat = new Double_t*[kNn];
 293   for(Int_t i=0; i < kNn; i++) mat[i] = new Double_t[kNn];
 294   Double_t *vect = new Double_t[kNn];
 295
 296   for(Int_t k1=0;k1<kNn;k1++){
 297     vect[k1]=0;
 298     for(Int_t k2=0;k2<kNn;k2++){
 299       mat[k1][k2]=0;
 300     }
 301   }
 302   Int_t npts = 0;
 303   for(Int_t k1=0;k1<kNn;k1++){
 304     for(Int_t jpad=fFirstPadForFit; jpad<=fLastPadForFit; jpad++){
 305       Double_t x=(Double_t)GetAnodeNumber(jpad);
 306       if(fDriftSpeed[jpad]>0 && GetInjPadStatus(jpad)>fPadStatusCutForFit){
 307           vect[k1]+=fDriftSpeed[jpad]*TMath::Power(x,k1)/TMath::Power(fDriftSpeedErr[jpad],2);
 308           if(k1==0) npts++;
 309           for(Int_t k2=0;k2<kNn;k2++){
 310             mat[k1][k2]+=TMath::Power(x,k1+k2)/TMath::Power(fDriftSpeedErr[jpad],2);
 311           }
 312       }
 313     }
 314   }
 315   if(npts<fPolDegree+1){
 316     if(fParam) delete [] fParam;
 317     fParam=new Double_t[kDimens];
 318     for(Int_t i=0; i<kDimens;i++)fParam[i]=0;
 319   }else{
 320     Int_t *iPivot = new Int_t[kNn];
 321     Int_t *indxR = new Int_t[kNn];
 322     Int_t *indxC = new Int_t[kNn];
 323     for(Int_t i=0;i<kNn;i++) iPivot[i]=0;
 324     Int_t iCol=-1,iRow=-1;
 325     for(Int_t i=0;i<kNn;i++){
 326       Double_t big=0.;
 327       for(Int_t j=0;j<kNn;j++){
 328         if(iPivot[j]!=1){
 329           for(Int_t k=0;k<kNn;k++){
 330             if(iPivot[k]==0){
 331               if(TMath::Abs(mat[j][k])>=big){
 332                 big=TMath::Abs(mat[j][k]);
 333                 iRow=j;
 334                 iCol=k;
 335               }
 336             }
 337           }
 338         }
 339       }
 340       iPivot[iCol]++;
 341       Double_t aux;
 342       if(iRow!=iCol){
 343         for(Int_t l=0;l<kNn;l++){
 344           aux=mat[iRow][l];
 345           mat[iRow][l]=mat[iCol][l];
 346           mat[iCol][l]=aux;
 347         }
 348         aux=vect[iRow];
 349         vect[iRow]=vect[iCol];
 350         vect[iCol]=aux;
 351       }
 352       indxR[i]=iRow;
 353       indxC[i]=iCol;
 354       if(mat[iCol][iCol]==0) break;
 355       Double_t pivinv=1./mat[iCol][iCol];
 356       mat[iCol][iCol]=1;
 357       for(Int_t l=0;l<kNn;l++) mat[iCol][l]*=pivinv;
 358       vect[iCol]*=pivinv;
 359       for(Int_t m=0;m<kNn;m++){
 360         if(m!=iCol){
 361           aux=mat[m][iCol];
 362           mat[m][iCol]=0;
 363           for(Int_t n=0;n<kNn;n++) mat[m][n]-=mat[iCol][n]*aux;
 364           vect[m]-=vect[iCol]*aux;
 365         }
 366       }
 367     }
 368     delete [] iPivot;
 369     delete [] indxR;
 370     delete [] indxC;
 371
 372
 373     if(fParam) delete [] fParam;
 374     fParam=new Double_t[kDimens];
 375     for(Int_t i=0; i<kNn;i++)fParam[i]=vect[i];
 376     if(degree<fPolDegree) for(Int_t i=kNn; i<kDimens;i++)fParam[i]=0.;
 377   }
 378
 379   for(Int_t i=0; i < kNn; i++) delete [] mat[i];
 380   delete [] mat;
 381   delete [] vect;
 382 }
 383 //______________________________________________________________________
 384 void AliITSOnlineSDDInjectors::CalcDriftSpeed(Int_t jpad){
 385   //
 386   Double_t sumY=0,sumX=0,sumXX=0,sumYY=0.,sumXY=0,sumWEI=0.;
 387   Int_t npt=0;
 388   Double_t y[kInjLines],ey[kInjLines];
 389   Double_t tzero=0,erry=0;
 390   for(Int_t i=0;i<kInjLines;i++){
 391     y[i]=fCentroid[jpad][i];
 392     ey[i]=fRMSCentroid[jpad][i];
 393   }
 394   for(Int_t i=0;i<kInjLines;i++){
 395     if(!fUseLine[i]) continue;
 396     if(fGoodInj[jpad][i] && ey[i]!=0){
 397       sumY+=y[i]/ey[i]/ey[i];
 398       sumX+=fPosition[i]/ey[i]/ey[i];
 399       sumXX+=fPosition[i]*fPosition[i]/ey[i]/ey[i];
 400       sumYY+=y[i]*y[i]/ey[i]/ey[i];
 401       sumXY+=fPosition[i]*y[i]/ey[i]/ey[i];
 402       sumWEI+=1./ey[i]/ey[i];
 403       tzero=fTbZero/ey[i]/ey[i];
 404       erry=ey[i]/ey[i]/ey[i];
 405       npt++;
 406     }
 407   }
 408   Double_t slope=0.,eslope=0.;
 409   if(npt==1){
 410     slope=(sumY-tzero)/sumX;
 411     eslope=erry/sumX;
 412   }
 413   if(npt>1){
 414     if(fUseTimeZeroSignal){
 415       sumY+=fTbZero/fRMSTbZero/fRMSTbZero;
 416       sumX+=0.;
 417       sumXX+=0.;
 418       sumYY+=fTbZero*fTbZero/fRMSTbZero/fRMSTbZero;
 419       sumXY+=0.;
 420       sumWEI+=1./fRMSTbZero/fRMSTbZero;
 421     }
 422     slope=(sumWEI*sumXY-sumY*sumX)/(sumWEI*sumXX-sumX*sumX);
 423     eslope=TMath::Sqrt(sumWEI/(sumWEI*sumXX-sumX*sumX));
 424   }
 425
 426   Double_t vel=0,evel=0;
 427   if(slope!=0. && fTimeStep>0.){
 428     vel=1./slope*10000./fTimeStep;// micron/ns
 429     evel=eslope/slope/slope*10000./fTimeStep;// micron/ns
 430   }
 431   if(vel>fMaxDriftSpeed||vel<fMinDriftSpeed || evel>fMaxDriftSpeedErr){
 432     vel=0.;
 433     evel=0.;
 434   }
 435   fDriftSpeed[jpad]=vel;
 436   fDriftSpeedErr[jpad]=evel;
 437 }
 438 //______________________________________________________________________
 439 Int_t AliITSOnlineSDDInjectors::GetAnodeNumber(Int_t iInjPad) const{
 440   // Injectors location along anodes:
 441   // Side left  (UP)   - channel 0: injectors on anodes 0,7,15,...,247,255
 442   // Side right (DOWN) - channel 1: injectors on anodes 0,8,16,...,248,255
 443   Int_t ian=-1;
 444   if(iInjPad>=kInjPads) return ian;
 445   if(fSide==1){  // right side
 446     ian=iInjPad*8;
 447     if(iInjPad==32) ian--;
 448   }else{         // left side
 449     ian=iInjPad*8-1;
 450     if(iInjPad==0) ian=0;
 451   }
 452   return ian;
 453 }
 454 //______________________________________________________________________
 455 Int_t AliITSOnlineSDDInjectors::GetInjPadNumberFromAnode(Int_t nAnode) const{
 456   //
 457   Int_t iInjPad=-1;
 458   if(fSide==1){  // right side
 459     if(nAnode%8==0) iInjPad=nAnode/8;
 460     if(nAnode==255) iInjPad=32;
 461   }else{         // left side
 462     if(nAnode%8==7) iInjPad=1+nAnode/8;
 463     if(nAnode==0) iInjPad=0;
 464   }
 465   if(nAnode>=256) iInjPad=-1;
 466   return iInjPad;
 467 }
 468 //______________________________________________________________________
 469 Int_t AliITSOnlineSDDInjectors::GetInjPadStatus(Int_t jpad) const{
 470   // returns an integer value with status of injector lines for given pad/anode
 471   // status=7  -->  111  all injector are good
 472   // status=6  -->  110  1st line (close to anodes) is bad, other two are good
 473   // ....
 474   // status=1  -->  001  only 1st line (close to anodes) good
 475   // status=0  -->  000  all lines are bad
 476   Int_t istatus=0;
 477   if(jpad>=0 && jpad<kInjPads){
 478     for(Int_t jlin=0;jlin<kInjLines;jlin++) istatus+=fGoodInj[jpad][jlin]<<jlin;
 479   }
 480   return istatus;
 481 }
 482 //______________________________________________________________________
 483 void AliITSOnlineSDDInjectors::FindGoodInjectors(){
 484   //
 485   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 486     Int_t ian=GetAnodeNumber(jpad);
 487     for(Int_t jlin=0;jlin<kInjLines;jlin++){
 488       for(Int_t jjj=fTbMin[jlin];jjj<fTbMax[jlin];jjj++){
 489         Float_t c1=fHisto->GetBinContent(jjj,ian+1);
 490         Float_t c2=fHisto->GetBinContent(jjj+1,ian+1);
 491         //      Float_t c3=fHisto->GetBinContent(jjj+2,ian+1);
 492         if(c1>fLowThreshold && c2>fLowThreshold){
 493           if(c1>fHighThreshold || c2>fHighThreshold){
 494             fGoodInj[jpad][jlin]=1;
 495             break;
 496           }
 497         }
 498       }
 499     }
 500   }
 501 }
 502 //______________________________________________________________________
 503 void AliITSOnlineSDDInjectors::FindCentroids(){
 504   //
 505   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 506     Int_t ian=GetAnodeNumber(jpad);
 507     for(Int_t jlin=0;jlin<kInjLines;jlin++){
 508       if(!fGoodInj[jpad][jlin]) continue;
 509       Double_t maxcont=0;
 510       Int_t ilmax=-1;
 511       for(Int_t jjj=fTbMin[jlin];jjj<fTbMax[jlin];jjj++){
 512         Double_t cont=fHisto->GetBinContent(jjj,ian+1);
 513         if(cont>maxcont){
 514           maxcont=cont;
 515           ilmax=jjj;
 516         }
 517       }
 518       Double_t intCont=0;
 519       Int_t jjj=ilmax;
 520       while(1){
 521         Double_t cont=fHisto->GetBinContent(jjj,ian+1);
 522         if(cont<fLowThreshold) break;
 523         if(cont<fgkSaturation){
 524           fCentroid[jpad][jlin]+=cont*(Double_t)jjj;
 525           fRMSCentroid[jpad][jlin]+=cont*(Double_t)jjj*(Double_t)jjj;
 526           intCont+=cont;
 527         }
 528         jjj--;
 529       }
 530       jjj=ilmax+1;
 531       while(1){
 532         Double_t cont=fHisto->GetBinContent(jjj,ian+1);
 533         if(cont<fLowThreshold) break;
 534         if(cont<fgkSaturation){
 535           fCentroid[jpad][jlin]+=cont*float(jjj);
 536           fRMSCentroid[jpad][jlin]+=cont*(Double_t)jjj*(Double_t)jjj;
 537           intCont+=cont;
 538         }
 539         jjj++;
 540       }
 541       if(intCont>0){
 542         fCentroid[jpad][jlin]/=intCont;
 543         fRMSCentroid[jpad][jlin]=TMath::Sqrt(fRMSCentroid[jpad][jlin]/intCont-fCentroid[jpad][jlin]*fCentroid[jpad][jlin])/TMath::Sqrt(intCont);
 544       }
 545       else{
 546         fCentroid[jpad][jlin]=0.;
 547         fRMSCentroid[jpad][jlin]=0.;
 548         fGoodInj[jpad][jlin]=0;
 549       }
 550       if(fRMSCentroid[jpad][jlin]==0) fGoodInj[jpad][jlin]=0;
 551     }
 552   }
 553 }
 554 //______________________________________________________________________
 555 void AliITSOnlineSDDInjectors::PrintInjectorStatus(){
 556   //
 557   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 558     printf("Line%d-Anode%d: %d %d %d\n",jpad,GetAnodeNumber(jpad),fGoodInj[jpad][0],fGoodInj[jpad][1],fGoodInj[jpad][2]);
 559   }
 560 }
 561 //______________________________________________________________________
 562 void AliITSOnlineSDDInjectors::PrintCentroids(){
 563   //
 564   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 565     printf("Line%d-Anode%d: %f+-%f %f+-%f %f+-%f\n",jpad,GetAnodeNumber(jpad),fCentroid[jpad][0],fRMSCentroid[jpad][0],fCentroid[jpad][1],fRMSCentroid[jpad][1],fCentroid[jpad][2],fRMSCentroid[jpad][2]);
 566   }
 567 }
 568 //______________________________________________________________________
 569 void AliITSOnlineSDDInjectors::WriteToASCII(Int_t evNumb, UInt_t timeStamp, Int_t optAppend){
 570   //
 571   Char_t outfilnam[100];
 572   sprintf(outfilnam,"SDDinj_ddl%02dc%02d_sid%d.data",fDDL,fCarlos,fSide);
 573   FILE* outf;
 574   if(optAppend==0){
 575     outf=fopen(outfilnam,"w");
 576     fprintf(outf,"%d\n",fActualPolDegree);
 577   }
 578   else outf=fopen(outfilnam,"a");
 579   fprintf(outf,"%d   %d   ",evNumb,timeStamp);
 580   for(Int_t ic=0;ic<fPolDegree+1;ic++){
 581     fprintf(outf,"%G ",fParam[ic]);
 582   }
 583   fprintf(outf,"\n");
 584   fclose(outf);
 585 }
 586 //______________________________________________________________________
 587 TH1F* AliITSOnlineSDDInjectors::GetMeanDriftSpeedVsPadHisto() const{
 588   Char_t hisnam[20];
 589   sprintf(hisnam,"hdrsp%02dc%02ds%d",fDDL,fCarlos,fSide);
 590   TH1F* h=new TH1F(hisnam,"",kInjPads,-0.5,kInjPads-0.5);
 591   if(fNEvents>0){
 592     for(Int_t i=0;i<kInjPads;i++){
 593       h->SetBinContent(i+1,GetMeanDriftSpeed(i));
 594       Double_t rms=GetRMSDriftSpeed(i);
 595       Double_t err=0.;
 596       if(rms>0.) err=rms/TMath::Sqrt(fNEvents);
 597       h->SetBinError(i+1,err);
 598     }
 599   }
 600   return h;
 601 }
 602 //______________________________________________________________________
 603 Bool_t AliITSOnlineSDDInjectors::WriteToROOT(TFile *fil) const {
 604   //
 605   if(fil==0){
 606     AliWarning("Invalid pointer to ROOT file");
 607     return kFALSE;
 608   }
 609   Char_t hisnam[20];
 610   fil->cd();
 611   sprintf(hisnam,"hdrsp%02dc%02ds%d",fDDL,fCarlos,fSide);
 612   TH1F hdsp(hisnam,"",kInjPads,-0.5,kInjPads-0.5);
 613   if(fNEvents==0){
 614     AliWarning("Zero analyzed events");
 615     return kFALSE;
 616   }
 617
 618   for(Int_t i=0;i<kInjPads;i++){
 619     hdsp.SetBinContent(i+1,GetMeanDriftSpeed(i));
 620     Double_t rms=GetRMSDriftSpeed(i);
 621     Double_t err=0.;
 622     if(rms>0.) err=rms/TMath::Sqrt(fNEvents);
 623     hdsp.SetBinError(i+1,err);
 624   }
 625   hdsp.Write();
 626   return kTRUE;
 627 }
 628 //______________________________________________________________________
 629 void AliITSOnlineSDDInjectors::WriteInjectorStatusToASCII(){
 630   // dump status of injectors encoded into UInt_t
 631   // 5 bits (value 0-31) to store number of pads with given status
 632   Char_t outfilnam[100];
 633   sprintf(outfilnam,"SDDinj_ddl%02dc%02d_sid%d.data",fDDL,fCarlos,fSide);
 634   FILE* outf=fopen(outfilnam,"a");
 635   Int_t n[8]={0,0,0,0,0,0,0,0};
 636   for(Int_t jpad=fFirstPadForFit; jpad<=fLastPadForFit; jpad++){
 637     Int_t statusPad=GetInjPadStatus(jpad);
 638     ++n[statusPad];
 639   }
 640   UInt_t statusInj=0;
 641   statusInj+=(n[7]&0x1F)<<25; // bits 25-29: n. of pads with status 7
 642   statusInj+=(n[6]&0x1F)<<20; // bits 20-24: n. of pads with status 6
 643   statusInj+=(n[5]&0x1F)<<15; // bits 15-19: n. of pads with status 5
 644   statusInj+=(n[4]&0x1F)<<10; // bits 10-14: n. of pads with status 4
 645   statusInj+=(n[3]&0x1F)<<5;  // bits  5- 9: n. of pads with status 3
 646   statusInj+=(n[2]&0x1F);     // bits  0- 4: n. of pads with status 2
 647
 648   fprintf(outf,"-99 %u\n",statusInj); // -99 used in preprocessor to find line
 649                                       // with injector status info
 650   fclose(outf);
 651
 652 }