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 "AliITSOnlineSDDInjectors.h"
  16 #include <TH2F.h>
  17 #include <TGraphErrors.h>
  18 #include <TMath.h>
  19
  20 /* $Id$ */
  21
  22 ///////////////////////////////////////////////////////////////////
  23 //                                                               //
  24 // Implementation of the class used for SDD injector analysis    //
  25 // Origin: F.Prino, Torino, prino@to.infn.it                     //
  26 //                                                               //
  27 ///////////////////////////////////////////////////////////////////
  28
  29 ClassImp(AliITSOnlineSDDInjectors)
  30
  31 const Float_t AliITSOnlineSDDInjectors::fgkSaturation = 1008.;
  32 const Float_t AliITSOnlineSDDInjectors::fgkDefaultLThreshold = 5.;
  33 const Float_t AliITSOnlineSDDInjectors::fgkDefaultHThreshold = 25.;
  34 const Float_t AliITSOnlineSDDInjectors::fgkDefaultMinSpeed = 5.5;
  35 const Float_t AliITSOnlineSDDInjectors::fgkDefaultMaxSpeed = 9.0;
  36 const Float_t AliITSOnlineSDDInjectors::fgkDefaultMaxErr = 1.5;
  37 const Int_t   AliITSOnlineSDDInjectors::fgkDefaultPolOrder = 3;
  38 const Float_t AliITSOnlineSDDInjectors::fgkDefaultTimeStep = 50.;
  39 const UShort_t AliITSOnlineSDDInjectors::fgkDefaultTbMin[kInjLines] = {10,50,100};
  40 const UShort_t AliITSOnlineSDDInjectors::fgkDefaultTbMax[kInjLines] = {20,70,120};
  41
  42 //______________________________________________________________________
  43 AliITSOnlineSDDInjectors::AliITSOnlineSDDInjectors():AliITSOnlineSDD(),fHisto(),fTbZero(0.),fParam(),fPolOrder(0),fMinDriftSpeed(0.),fMaxDriftSpeed(0.),fMaxDriftSpeedErr(0.),fLowThreshold(0.),fHighThreshold(0.),fFirstPadForFit(0),fLastPadForFit(0),fPadStatusCutForFit(0),fTimeStep(0.)
  44 {
  45   // default constructor
  46   SetPositions();
  47   SetDefaults();
  48   SetTimeStep(fgkDefaultTimeStep);
  49 }
  50 //______________________________________________________________________
  51 AliITSOnlineSDDInjectors::AliITSOnlineSDDInjectors(Int_t nddl, Int_t ncarlos, Int_t sid):AliITSOnlineSDD(nddl,ncarlos,sid),fHisto(),fTbZero(0.),fParam(),fPolOrder(0),fMinDriftSpeed(0.),fMaxDriftSpeed(0.),fMaxDriftSpeedErr(0.),fLowThreshold(0.),fHighThreshold(0.),fFirstPadForFit(0),fLastPadForFit(0),fPadStatusCutForFit(0),fTimeStep(0.)
  52 {
  53 // standard constructor
  54   SetPositions();
  55   SetDefaults();
  56   SetTimeStep(fgkDefaultTimeStep);
  57 }
  58 //______________________________________________________________________
  59 AliITSOnlineSDDInjectors::~AliITSOnlineSDDInjectors(){
  60   // Destructor
  61   // fHisto should not be deleted here because it points to an histo created
  62   // by the external code which calls the method AnalyzeEvent
  63   // if(fHisto) delete fHisto;
  64   if(fParam) delete [] fParam;
  65 }
  66 //______________________________________________________________________
  67 void AliITSOnlineSDDInjectors::SetDefaults(){
  68   for(Int_t i=0;i<kInjLines;i++)
  69     SetInjLineRange(i,fgkDefaultTbMin[i],fgkDefaultTbMax[i]);
  70   SetThresholds(fgkDefaultLThreshold,fgkDefaultHThreshold);
  71   SetPolOrder(fgkDefaultPolOrder);
  72   SetMinDriftSpeed(fgkDefaultMinSpeed);
  73   SetMaxDriftSpeed(fgkDefaultMaxSpeed);
  74   SetMaxDriftSpeedErr(fgkDefaultMaxErr);
  75   SetFitLimits(1,kInjPads-2); // exclude first and last pad
  76   SetPadStatusCutForFit();
  77 }
  78 //______________________________________________________________________
  79 void AliITSOnlineSDDInjectors::SetPositions(){
  80   //
  81   Float_t xLinFromCenterUm[kInjLines]={31860.,17460.,660.};
  82   Float_t xAnodeFromCenterUm=35085;
  83   for(Int_t i=0;i<kInjLines;i++){
  84     fPosition[i]=xAnodeFromCenterUm-xLinFromCenterUm[i];
  85     fPosition[i]/=10000.; // from microns to cm
  86   }
  87 }
  88 //______________________________________________________________________
  89 void AliITSOnlineSDDInjectors::Reset(){
  90   //
  91   for(Int_t i=0;i<kInjPads;i++){
  92     fDriftSpeed[i]=0.;
  93     fDriftSpeedErr[i]=0.;
  94   }
  95   for(Int_t i=0;i<kInjPads;i++){
  96     for(Int_t j=0;j<kInjLines;j++){
  97       fGoodInj[i][j]=0;
  98       fCentroid[i][j]=0.;
  99       fRMSCentroid[i][j]=0.;
 100     }
 101   }
 102 }
 103 //______________________________________________________________________
 104 void AliITSOnlineSDDInjectors::AnalyzeEvent(TH2F* his){
 105   //
 106   Reset();
 107   fHisto=his;
 108   FindGoodInjectors();
 109   FindCentroids();
 110   CalcTimeBinZero();
 111   for(Int_t j=0;j<kInjPads;j++) CalcDriftSpeed(j);
 112   FitDriftSpeedVsAnode();
 113 }
 114 //______________________________________________________________________
 115 TGraphErrors* AliITSOnlineSDDInjectors::GetTimeVsDistGraph(Int_t jpad) const{
 116   //
 117   const Int_t kPts=kInjLines+1;
 118   Float_t x[kPts],y[kPts],ex[kPts],ey[kPts];
 119   x[0]=0.;
 120   ex[0]=0.;
 121   y[0]=fTbZero;
 122   ey[0]=0.;
 123   for(Int_t i=0;i<kInjLines;i++){
 124     x[i+1]=fPosition[i];
 125     ex[i+1]=0.;
 126     y[i+1]=fCentroid[jpad][i];
 127     ey[i+1]=fRMSCentroid[jpad][i];
 128   }
 129   TGraphErrors *g=new TGraphErrors(4,x,y,ex,ey);
 130   return g;
 131 }
 132
 133 //______________________________________________________________________
 134 TGraphErrors* AliITSOnlineSDDInjectors::GetDriftSpeedGraph() const{
 135   //
 136   Int_t ipt=0;
 137   TGraphErrors *g=new TGraphErrors(0);
 138   for(Int_t i=0;i<kInjPads;i++){
 139     if(fDriftSpeed[i]>0){
 140       g->SetPoint(ipt,GetAnodeNumber(i),fDriftSpeed[i]);
 141       g->SetPointError(ipt,0,fDriftSpeedErr[i]);
 142       ipt++;
 143     }
 144   }
 145   return g;
 146 }
 147 //______________________________________________________________________
 148 TGraphErrors* AliITSOnlineSDDInjectors::GetSelectedDriftSpeedGraph(Int_t minAcceptStatus) const{
 149   // TGraphErrors with only pads with status of injector >= minAcceptStatus
 150   Int_t ipt=0;
 151   TGraphErrors *g=new TGraphErrors(0);
 152   for(Int_t i=0;i<kInjPads;i++){
 153     Int_t padStatus = GetInjPadStatus(i);
 154     if(fDriftSpeed[i]>0 && padStatus >= minAcceptStatus ){
 155       g->SetPoint(ipt,GetAnodeNumber(i),fDriftSpeed[i]);
 156       g->SetPointError(ipt,0,fDriftSpeedErr[i]);
 157       ipt++;
 158     }
 159   }
 160   return g;
 161 }
 162 //______________________________________________________________________
 163 void AliITSOnlineSDDInjectors::CalcTimeBinZero(){
 164   //
 165   Float_t tzero=0.,intCont=0.;
 166   for(Int_t ian=0;ian<fgkNAnodes;ian++){
 167     for(Int_t itb=1;itb<fTbMin[0];itb++){
 168       Float_t cont=fHisto->GetBinContent(itb,ian+1);
 169       if(cont>fLowThreshold){
 170         tzero+=cont*float(itb);
 171         intCont+=cont;
 172       }
 173     }
 174   }
 175   if(intCont>0) fTbZero=tzero/intCont;
 176 }
 177 //______________________________________________________________________
 178 void AliITSOnlineSDDInjectors::FitDriftSpeedVsAnode(){
 179   // fits the anode dependence of drift speed with a polynomial function
 180   const Int_t kNn=fPolOrder+1;
 181   Float_t **mat = new Float_t*[kNn];
 182   for(Int_t i=0; i < kNn; i++) mat[i] = new Float_t[kNn];
 183   Float_t *vect = new Float_t[kNn];
 184
 185   for(Int_t k1=0;k1<kNn;k1++){
 186     vect[k1]=0;
 187     for(Int_t k2=0;k2<kNn;k2++){
 188       mat[k1][k2]=0;
 189     }
 190   }
 191   Int_t npts = 0;
 192   for(Int_t k1=0;k1<kNn;k1++){
 193     for(Int_t jpad=fFirstPadForFit; jpad<=fLastPadForFit; jpad++){
 194       Float_t x=(Float_t)GetAnodeNumber(jpad);
 195       if(fDriftSpeed[jpad]>0 && GetInjPadStatus(jpad)>fPadStatusCutForFit){
 196           vect[k1]+=fDriftSpeed[jpad]*TMath::Power(x,k1)/TMath::Power(fDriftSpeedErr[jpad],2);
 197           if(k1==0) npts++;
 198           for(Int_t k2=0;k2<kNn;k2++){
 199             mat[k1][k2]+=TMath::Power(x,k1+k2)/TMath::Power(fDriftSpeedErr[jpad],2);
 200           }
 201       }
 202     }
 203   }
 204   if(npts<fPolOrder+1){
 205     if(fParam) delete [] fParam;
 206     fParam=new Float_t[kNn];
 207     for(Int_t i=0; i<kNn;i++)fParam[i]=0;
 208   }else{
 209     Int_t *iPivot = new Int_t[kNn];
 210     Int_t *indxR = new Int_t[kNn];
 211     Int_t *indxC = new Int_t[kNn];
 212     for(Int_t i=0;i<kNn;i++) iPivot[i]=0;
 213     Int_t iCol=-1,iRow=-1;
 214     for(Int_t i=0;i<kNn;i++){
 215       Float_t big=0.;
 216       for(Int_t j=0;j<kNn;j++){
 217         if(iPivot[j]!=1){
 218           for(Int_t k=0;k<kNn;k++){
 219             if(iPivot[k]==0){
 220               if(TMath::Abs(mat[j][k])>=big){
 221                 big=TMath::Abs(mat[j][k]);
 222                 iRow=j;
 223                 iCol=k;
 224               }
 225             }
 226           }
 227         }
 228       }
 229       iPivot[iCol]++;
 230       Float_t aux;
 231       if(iRow!=iCol){
 232         for(Int_t l=0;l<kNn;l++){
 233           aux=mat[iRow][l];
 234           mat[iRow][l]=mat[iCol][l];
 235           mat[iCol][l]=aux;
 236         }
 237         aux=vect[iRow];
 238         vect[iRow]=vect[iCol];
 239         vect[iCol]=aux;
 240       }
 241       indxR[i]=iRow;
 242       indxC[i]=iCol;
 243       if(mat[iCol][iCol]==0) break;
 244       Float_t pivinv=1./mat[iCol][iCol];
 245       mat[iCol][iCol]=1;
 246       for(Int_t l=0;l<kNn;l++) mat[iCol][l]*=pivinv;
 247       vect[iCol]*=pivinv;
 248       for(Int_t m=0;m<kNn;m++){
 249         if(m!=iCol){
 250           aux=mat[m][iCol];
 251           mat[m][iCol]=0;
 252           for(Int_t n=0;n<kNn;n++) mat[m][n]-=mat[iCol][n]*aux;
 253           vect[m]-=vect[iCol]*aux;
 254         }
 255       }
 256     }
 257     delete [] iPivot;
 258     delete [] indxR;
 259     delete [] indxC;
 260
 261
 262     if(fParam) delete [] fParam;
 263     fParam=new Float_t[kNn];
 264     for(Int_t i=0; i<kNn;i++)fParam[i]=vect[i];
 265   }
 266
 267   for(Int_t i=0; i < kNn; i++) delete [] mat[i];
 268   delete [] mat;
 269   delete [] vect;
 270 }
 271 //______________________________________________________________________
 272 void AliITSOnlineSDDInjectors::CalcDriftSpeed(Int_t jpad){
 273   //
 274   Float_t sumY=0,sumX=0,sumXX=0,sumYY=0.,sumXY=0,sumWEI=0.;
 275   Int_t npt=0;
 276   Float_t y[kInjLines],ey[kInjLines];
 277   Float_t tzero=0,erry=0;
 278   for(Int_t i=0;i<kInjLines;i++){
 279     y[i]=fCentroid[jpad][i];
 280     ey[i]=fRMSCentroid[jpad][i];
 281   }
 282   for(Int_t i=0;i<kInjLines;i++){
 283     if(fGoodInj[jpad][i] && ey[i]!=0){
 284       sumY+=y[i]/ey[i]/ey[i];
 285       sumX+=fPosition[i]/ey[i]/ey[i];
 286       sumXX+=fPosition[i]*fPosition[i]/ey[i]/ey[i];
 287       sumYY+=y[i]*y[i]/ey[i]/ey[i];
 288       sumXY+=fPosition[i]*y[i]/ey[i]/ey[i];
 289       sumWEI+=1./ey[i]/ey[i];
 290       tzero=fTbZero/ey[i]/ey[i];
 291       erry=ey[i];
 292       npt++;
 293     }
 294   }
 295   Float_t vel=0,evel=0;
 296   if(npt>1){
 297     Float_t slope=(sumWEI*sumXY-sumY*sumX)/(sumWEI*sumXX-sumX*sumX);
 298     Float_t eslope=TMath::Sqrt(sumWEI/(sumWEI*sumXX-sumX*sumX));
 299     if(slope!=0 && fTimeStep>0.){
 300       vel=1./slope*10000./fTimeStep;// micron/ns
 301       evel=eslope/slope/slope*10000./fTimeStep;// micron/ns
 302     }
 303   }
 304   if(npt==1){
 305     Float_t slope=(sumY-tzero)/sumX;
 306     Float_t eslope=erry/sumX;
 307     if(slope!=0 && fTimeStep>0.){
 308       vel=1./slope*10000./fTimeStep;// micron/ns
 309       evel=eslope/slope/slope*10000./fTimeStep;// micron/ns
 310     }
 311   }
 312   if(vel>fMaxDriftSpeed||vel<fMinDriftSpeed || evel>fMaxDriftSpeedErr){
 313     vel=0.;
 314     evel=0.;
 315   }
 316   fDriftSpeed[jpad]=vel;
 317   fDriftSpeedErr[jpad]=evel;
 318 }
 319 //______________________________________________________________________
 320 Int_t AliITSOnlineSDDInjectors::GetAnodeNumber(Int_t iInjPad) const{
 321   // Injectors location along anodes:
 322   // Side left  (UP)   - channel 0: injectors on anodes 0,7,15,...,247,255
 323   // Side right (DOWN) - channel 1: injectors on anodes 0,8,16,...,248,255
 324   Int_t ian=-1;
 325   if(iInjPad>=kInjPads) return ian;
 326   if(fSide==1){  // right side
 327     ian=iInjPad*8;
 328     if(iInjPad==32) ian--;
 329   }else{         // left side
 330     ian=iInjPad*8-1;
 331     if(iInjPad==0) ian=0;
 332   }
 333   return ian;
 334 }
 335 //______________________________________________________________________
 336 Int_t AliITSOnlineSDDInjectors::GetInjPadNumberFromAnode(Int_t nAnode) const{
 337   //
 338   Int_t iInjPad=-1;
 339   if(fSide==1){  // right side
 340     if(nAnode%8==0) iInjPad=nAnode/8;
 341     if(nAnode==255) iInjPad=32;
 342   }else{         // left side
 343     if(nAnode%8==7) iInjPad=1+nAnode/8;
 344     if(nAnode==0) iInjPad=0;
 345   }
 346   if(nAnode>=256) iInjPad=-1;
 347   return iInjPad;
 348 }
 349 //______________________________________________________________________
 350 Int_t AliITSOnlineSDDInjectors::GetInjPadStatus(Int_t jpad) const{
 351   // returns an integer value with status of injector lines for given pad/anode
 352   // status=7  -->  111  all injector are good
 353   // status=6  -->  110  1st line (close to anodes) is bad, other two are good
 354   // ....
 355   // status=1  -->  001  only 1st line (close to anodes) good
 356   // status=0  -->  000  all lines are bad
 357   Int_t istatus=0;
 358   if(jpad>=0 && jpad<kInjPads){
 359     for(Int_t jlin=0;jlin<kInjLines;jlin++) istatus+=fGoodInj[jpad][jlin]<<jlin;
 360   }
 361   return istatus;
 362 }
 363 //______________________________________________________________________
 364 void AliITSOnlineSDDInjectors::FindGoodInjectors(){
 365   //
 366   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 367     Int_t ian=GetAnodeNumber(jpad);
 368     for(Int_t jlin=0;jlin<kInjLines;jlin++){
 369       for(Int_t jjj=fTbMin[jlin];jjj<fTbMax[jlin];jjj++){
 370         Float_t c1=fHisto->GetBinContent(jjj,ian+1);
 371         Float_t c2=fHisto->GetBinContent(jjj+1,ian+1);
 372         Float_t c3=fHisto->GetBinContent(jjj+2,ian+1);
 373         if(c1>fLowThreshold && c2>fHighThreshold && c3>fLowThreshold){
 374           fGoodInj[jpad][jlin]=1;
 375           break;
 376         }
 377       }
 378     }
 379   }
 380 }
 381 //______________________________________________________________________
 382 void AliITSOnlineSDDInjectors::FindCentroids(){
 383   //
 384   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 385     Int_t ian=GetAnodeNumber(jpad);
 386     for(Int_t jlin=0;jlin<kInjLines;jlin++){
 387       if(!fGoodInj[jpad][jlin]) continue;
 388       Float_t maxcont=0;
 389       Int_t ilmax=-1;
 390       for(Int_t jjj=fTbMin[jlin];jjj<fTbMax[jlin];jjj++){
 391         Float_t cont=fHisto->GetBinContent(jjj,ian+1);
 392         if(cont>maxcont){
 393           maxcont=cont;
 394           ilmax=jjj;
 395         }
 396       }
 397       Float_t intCont=0;
 398       Int_t jjj=ilmax;
 399       while(1){
 400         Float_t cont=fHisto->GetBinContent(jjj,ian+1);
 401         if(cont<fLowThreshold) break;
 402         if(cont<fgkSaturation){
 403           fCentroid[jpad][jlin]+=cont*(Float_t)jjj;
 404           fRMSCentroid[jpad][jlin]+=cont*TMath::Power((Float_t)jjj,2);
 405           intCont+=cont;
 406         }
 407         jjj--;
 408       }
 409       jjj=ilmax+1;
 410       while(1){
 411         Float_t cont=fHisto->GetBinContent(jjj,ian+1);
 412         if(cont<fLowThreshold) break;
 413         if(cont<fgkSaturation){
 414           fCentroid[jpad][jlin]+=cont*float(jjj);
 415           fRMSCentroid[jpad][jlin]+=cont*TMath::Power((Float_t)jjj,2);
 416           intCont+=cont;
 417         }
 418         jjj++;
 419       }
 420       if(intCont>0){
 421         fCentroid[jpad][jlin]/=intCont;
 422         fRMSCentroid[jpad][jlin]=TMath::Sqrt(fRMSCentroid[jpad][jlin]/intCont-fCentroid[jpad][jlin]*fCentroid[jpad][jlin]);
 423       }
 424       else{
 425         fCentroid[jpad][jlin]=0.;
 426         fRMSCentroid[jpad][jlin]=0.;
 427         fGoodInj[jpad][jlin]=0;
 428       }
 429       if(fRMSCentroid[jpad][jlin]==0) fGoodInj[jpad][jlin]=0;
 430     }
 431   }
 432 }
 433 //______________________________________________________________________
 434 void AliITSOnlineSDDInjectors::PrintInjectorStatus(){
 435   //
 436   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 437     printf("Line%d-Anode%d: %d %d %d\n",jpad,GetAnodeNumber(jpad),fGoodInj[jpad][0],fGoodInj[jpad][1],fGoodInj[jpad][2]);
 438   }
 439 }
 440 //______________________________________________________________________
 441 void AliITSOnlineSDDInjectors::PrintCentroids(){
 442   //
 443   for(Int_t jpad=0;jpad<kInjPads;jpad++){
 444     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]);
 445   }
 446 }
 447 //______________________________________________________________________
 448 void AliITSOnlineSDDInjectors::WriteToASCII(Int_t evNumb, UInt_t timeStamp, Int_t optAppend){
 449   //
 450   Char_t outfilnam[100];
 451   sprintf(outfilnam,"SDDinj_ddl%02dc%02d_sid%d.data",fDDL,fCarlos,fSide);
 452   FILE* outf;
 453   if(optAppend==0){
 454     outf=fopen(outfilnam,"w");
 455     fprintf(outf,"%d\n",fPolOrder);
 456   }
 457   else outf=fopen(outfilnam,"a");
 458   fprintf(outf,"%d   %d   ",evNumb,timeStamp);
 459   for(Int_t ic=0;ic<fPolOrder+1;ic++){
 460     fprintf(outf,"%G ",fParam[ic]);
 461   }
 462   fprintf(outf,"\n");
 463   fclose(outf);
 464 }