]> git.uio.no Git - u/mrichter/AliRoot.git/blobdiff - ITS/AliITSPreprocessorSDD.cxx
technial fix to suppress the warning
[u/mrichter/AliRoot.git] / ITS / AliITSPreprocessorSDD.cxx
index 8cdefee4258223f53286eff276d1cb5631b44d79..a0e612923089504f4729a46d9d59e465e43b8d89 100644 (file)
-/////////////////////////////////////////
-// Class for SDD digits preprocessing  //
-//                                     //
-//                                     //
-////////////////////////////////////////
+/**************************************************************************
+ * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
+ *                                                                        *
+ * Author: The ALICE Off-line Project.                                    *
+ * Contributors are mentioned in the code where appropriate.              *
+ *                                                                        *
+ * Permission to use, copy, modify and distribute this software and its   *
+ * documentation strictly for non-commercial purposes is hereby granted   *
+ * without fee, provided that the above copyright notice appears in all   *
+ * copies and that both the copyright notice and this permission notice   *
+ * appear in the supporting documentation. The authors make no claims     *
+ * about the suitability of this software for any purpose. It is          *
+ * provided "as is" without express or implied warranty.                  *
+ **************************************************************************/
 
 /* $Id$ */
 
+///////////////////////////////////////////////////////////////////
+//                                                               //
+// Implementation of the class for SDD preprocessing             //
+// Run Types treated:                                            // 
+// PULSER, INJECTOR -> Store OCDB parameters                     //
+// ALL RUNS -> Store DCS reference data                          //
+// Origin: E.Crescio, Torino, crescio@to.infn.it                 //
+//         F.Prino, Torino, prino@to.infn.it                     //
+//                                                               //
+///////////////////////////////////////////////////////////////////
+
+#include "AliITSDDLModuleMapSDD.h"
 #include "AliITSPreprocessorSDD.h"
 #include "AliITSCalibrationSDD.h"
+#include "AliITSDriftSpeedSDD.h"
+#include "AliITSDriftSpeedArraySDD.h"
+#include "AliITSDCSAnalyzerSDD.h"
 #include "AliShuttleInterface.h"
+#include "AliCDBEntry.h"
 #include "AliCDBMetaData.h"
 #include "TObjArray.h"
 #include "AliLog.h"
 #include <TObjString.h>
 #include <TSystem.h>
 #include <TList.h>
+#include <TF1.h>
+#include <TH1D.h>
 
-const Int_t AliITSPreprocessorSDD::fgkNumberOfSDD = 260;
-const Int_t AliITSPreprocessorSDD::fgkNumberOfChannels = 512;
 const TString AliITSPreprocessorSDD::fgkNameHistoPedestals = "hpedestal";
 const TString AliITSPreprocessorSDD::fgkNameHistoNoise = "hnoise";
 ClassImp(AliITSPreprocessorSDD)
 
+//______________________________________________________________________
+AliITSPreprocessorSDD::AliITSPreprocessorSDD( AliShuttleInterface* shuttle):
+    AliPreprocessor("SDD", shuttle)
+{
+  // constructor
+  AddRunType("PULSER");
+  AddRunType("INJECTOR");
+  AddRunType("PHYSICS"); 
+}
+
+//______________________________________________________________________
+UInt_t AliITSPreprocessorSDD::Process(TMap* dcsAliasMap){
+
+
+  // Get DDL map from OCDB
+  AliCDBEntry* entry = GetFromOCDB("Calib", "DDLMapSDD");
+  if(!entry){
+    Log("DDL map file not found in OCDB.");  
+    return 2;
+  }
+  AliITSDDLModuleMapSDD* ddlmap = (AliITSDDLModuleMapSDD*)entry->GetObject();
+  if(!ddlmap){ 
+    Log("AliITSDDLModuleMapSDD object not in file.");
+    return 2;
+  }
+  ddlmap->PrintDDLMap();
+
+  //preprocessing
+  TString runType = GetRunType();
+  Int_t retcode=0;
+
+  if (runType == "PULSER"){
+    Log("Process FXS files from PULSER RUN");
+    retcode=ProcessPulser(ddlmap);
+  }else if(runType== "INJECTOR"){
+    Log("Process FXS files from INJECTOR RUN");
+    retcode=ProcessInjector(ddlmap);
+  }
+  if(retcode!=0) return retcode;
 
-UInt_t AliITSPreprocessorSDD::Process(TMap*/* dcsAliasMap*/){
+  Log("Process DCS data");
+  Bool_t retcodedcs =ProcessDCSDataPoints(dcsAliasMap);
+  if(retcodedcs) return 0; 
+  else return 1;           
 
-  //preprocessing. 
+}
+//______________________________________________________________________
+UInt_t AliITSPreprocessorSDD::ProcessPulser(AliITSDDLModuleMapSDD* ddlmap){
+  // Process FXS files from PULSER run (baseline, noise, gain)
+  // returns 0 in case of success, 
+  //         1 in case of storage error, 
+  //         2 in case of error with input files
+  TObjArray calSDD(kNumberOfSDD);
+  calSDD.SetOwner(kFALSE);
 
-  TObjArray respSDD(fgkNumberOfSDD);
-  respSDD.SetOwner(kFALSE);
   Float_t baseline,rawnoise,cmn,corn,gain;
-  Int_t isgoodan,i,im,is,isgoodmod;
-  Int_t numOfBadChannels[fgkNumberOfSDD];
-  //TString pwd = gSystem->pwd();
-//  const Char_t* tempDir=AliShuttleInterface::GetShuttleTempDir();
+  Int_t isgoodan,i,im,is,isgoodmod,basmin,basoff;
+  Int_t th,tl;
+  Int_t numOfBadChannels[kNumberOfSDD];
   
   TList* sourceList = GetFileSources(kDAQ, "SDD_Calib");
   if (!sourceList){ 
@@ -42,107 +114,345 @@ UInt_t AliITSPreprocessorSDD::Process(TMap*/* dcsAliasMap*/){
   }
 
   Int_t ind = 0;
-  Char_t command[100];
   while (sourceList->At(ind)!=NULL) {
     TObjString* tarId = (TObjString*) sourceList->At(ind);
     TString tarName = GetFile(kDAQ, "SDD_Calib", tarId->GetString().Data());
-//    gSystem->cd(tempDir);
     if(tarName.Length()==0){
       Log(Form("Baseline tar file from source %d not found.",ind));
       return 2;
     }
-    sprintf(command,"tar -xf %s",tarName.Data());
+    TString command;
+    command.Form("tar -xf %s",tarName.Data());
     gSystem->Exec(command);
     ind++;
   }
-   
-  sourceList = GetFileSources(kDAQ, "SDD_Injec");
+  delete sourceList;
+  // Read ADC sampling frequency from fee.conf
+  Int_t amSamplFreq=40;
+  Int_t retfscf;
+  FILE* feefil=fopen("fee.conf","r");
+  if(feefil){
+    retfscf=fscanf(feefil,"%d \n",&amSamplFreq);
+    fclose(feefil);
+    Log(Form("AM sampling frequency = %d MHz",amSamplFreq));
+  }else{
+    Log("File fee.conf not found. AM sampling set at 40 MHz by default");
+  }
+  
+  for(Int_t iddl=0;iddl<kNumberOfDDL;iddl++){
+    for(Int_t imod=0;imod<kModulesPerDDL;imod++){
+      Int_t modID=ddlmap->GetModuleNumber(iddl,imod);
+      if(modID==-1) continue;
+      modID-=240; // to have SDD modules numbering from 0 to 260
+      AliITSCalibrationSDD *cal = new AliITSCalibrationSDD("simulated");
+      if(amSamplFreq!=40) cal->SetAMAt20MHz();
+      numOfBadChannels[modID]=0;
+      Int_t badch[kNumberOfChannels];
+      Bool_t sid0ok=kTRUE;
+      Bool_t sid1ok=kTRUE;
+      for(Int_t isid=0;isid<=1;isid++){
+       TString inpFileName;
+       inpFileName.Form("./SDDbase_ddl%02dc%02d_sid%d.data",iddl,imod,isid);
+
+       FILE* basFil = fopen(inpFileName,"read");
+       if (basFil == 0) {
+         Log(Form("File %s not found.",inpFileName.Data()));
+         if(isid==0){
+           sid0ok=kFALSE;
+           for(Int_t iChip=0; iChip<4; iChip++) cal->SetChipBad(iChip);
+           cal->SetDeadChannels(cal->GetDeadChannels()+256);
+           for(Int_t iAnode=0; iAnode<256; iAnode++) cal->SetBadChannel(iAnode,iAnode);
+         }else{
+           sid1ok=kFALSE;
+           for(Int_t iChip=4; iChip<8; iChip++) cal->SetChipBad(iChip);
+           cal->SetDeadChannels(cal->GetDeadChannels()+256);
+           for(Int_t iAnode=0; iAnode<256; iAnode++) cal->SetBadChannel(iAnode,iAnode+256);
+         }
+         continue;
+       }
+
+       retfscf=fscanf(basFil,"%d %d %d\n",&im,&is,&isgoodmod);
+       if(!isgoodmod){
+         if(isid==0){
+           sid0ok=kFALSE;
+           for(Int_t iChip=0; iChip<4; iChip++) cal->SetChipBad(iChip);
+         }else{
+           sid1ok=kFALSE;
+           for(Int_t iChip=4; iChip<8; iChip++) cal->SetChipBad(iChip);
+         }
+       }
+       retfscf=fscanf(basFil,"%d\n",&th);
+       retfscf=fscanf(basFil,"%d\n",&tl);
+       cal->SetZSLowThreshold(isid,tl);
+       cal->SetZSHighThreshold(isid,th);
+       for(Int_t ian=0;ian<(kNumberOfChannels/2);ian++){
+         retfscf=fscanf(basFil,"%d %d %f %d %d %f %f %f %f\n",&i,&isgoodan,&baseline,&basmin,&basoff,&rawnoise,&cmn,&corn,&gain);
+         Int_t ich=ian;
+         if(isid==1) ich+=256;
+         if(!isgoodan){ 
+           Int_t ibad=numOfBadChannels[modID];
+           badch[ibad]=ich;
+           numOfBadChannels[modID]++;
+         }
+         cal->SetBaseline(ich,baseline-basoff);
+         cal->SetNoiseAfterElectronics(ich,rawnoise);
+         cal->SetGain(ich,gain);
+       }
+       cal->SetDeadChannels(numOfBadChannels[modID]);
+       for(Int_t ibad=0;ibad<numOfBadChannels[modID];ibad++){
+         cal->SetBadChannel(ibad,badch[ibad]);
+       }
+       fclose(basFil);
+      }
+      if(!sid0ok && !sid1ok) cal->SetBad();
+      Log(Form("Put calib obj for module %d (DDL %d  Carlos %d)",modID,iddl,imod));
+      calSDD.AddAt(cal,modID);
+    }
+  }
+  AliCDBMetaData *md= new AliCDBMetaData();
+  md->SetResponsible("Francesco Prino");
+  md->SetBeamPeriod(0);
+  md->SetComment("AliITSCalibrationSDD from PEDESTAL+PULSER runs");
+  Bool_t retCode = Store("Calib","CalibSDD",&calSDD,md, 0, kTRUE);
+  if(retCode) return 0;
+  else return 1;
+}
+//______________________________________________________________________
+UInt_t AliITSPreprocessorSDD::ProcessInjector(AliITSDDLModuleMapSDD* ddlmap){
+  // Process FXS files from injector events (INJECTOR or PHYSICS runs)
+  // returns 0 in case of success, 
+  //         1 in case of storage error, 
+  //         2 in case of error with input files
+  TObjArray vdrift(2*kNumberOfSDD);
+  vdrift.SetOwner(kFALSE);
+  Int_t evNumb,polDeg; 
+  UInt_t timeStamp,statusInj;
+  Bool_t modSet[2*kNumberOfSDD]; // flag modules with good inj.
+  for(Int_t ihyb=0; ihyb<2*kNumberOfSDD; ihyb++) modSet[ihyb]=0;
+  Double_t nPtLay3 = 0;
+  Double_t nPtLay4 = 0;
+
+  Double_t param[4];    // parameters of poly fit
+  Double_t minValP0=5.; // min value for param[0]
+  Double_t maxValP0=8.; // max value for param[0]
+  Double_t minValP1=0.; // min value for param[1]
+  Double_t aveCoefLay3[4]={0.,0.,0.,0.};  // average param for good mod.
+  Double_t aveCoefLay4[4]={0.,0.,0.,0.};  // average param for good mod.
+  Double_t defCoef[4]={6.53227,0.00128941,-5.14493e-06,0};  // default values for param
+  Float_t auxP;
+
+  TList* sourceList = GetFileSources(kDAQ, "SDD_Injec");
   if (!sourceList){ 
     Log("Error: no sources found for SDD_Injec");
     return 2;
   }
-
-  ind = 0;
+  Int_t ind = 0;
   while (sourceList->At(ind)!=NULL) {
-   TObjString* tarId = (TObjString*) sourceList->At(ind);
-   TString tarName = GetFile(kDAQ, "SDD_Injec", tarId->GetString().Data());
-//    gSystem->cd(tempDir);
+    TObjString* tarId = (TObjString*) sourceList->At(ind);
+    TString tarName = GetFile(kDAQ, "SDD_Injec", tarId->GetString().Data());
     if(tarName.Length()==0){
       Log(Form("Injector tar file from source %d not found.",ind));
       return 2;
     }
-    sprintf(command,"tar -xf %s",tarName.Data());
+    TString command;
+    command.Form("tar -xf %s",tarName.Data());
     gSystem->Exec(command);
     ind++;
   }
-  
   delete sourceList;
+  Int_t retfscf;
+  
+
+  for(Int_t iddl=0;iddl<kNumberOfDDL;iddl++){
+    for(Int_t imod=0;imod<kModulesPerDDL;imod++){
+      Int_t modID=ddlmap->GetModuleNumber(iddl,imod);
+      if(modID==-1) continue;
+      modID-=240; // to have SDD modules numbering from 0 to 260
+      for(Int_t isid=0;isid<=1;isid++){
+       AliITSDriftSpeedArraySDD *arr=new AliITSDriftSpeedArraySDD();
+       TString inpFileName;
+       inpFileName.Form("./SDDinj_ddl%02dc%02d_sid%d.data",iddl,imod,isid);
+       FILE* injFil = fopen(inpFileName,"read");
+       if (injFil == 0) {
+         Log(Form("File %s not found.",inpFileName.Data()));
+         continue;
+       }
+       retfscf=fscanf(injFil,"%d",&polDeg);
+       while (!feof(injFil)){
+         retfscf=fscanf(injFil,"%d %u ",&evNumb,&timeStamp);
+         if(evNumb==-99){
+           statusInj=timeStamp;
+           arr->SetInjectorStatus(statusInj);
+         }else{
+           if(feof(injFil)) break;
+           for(Int_t ic=0;ic<4;ic++){ 
+             retfscf=fscanf(injFil,"%f ",&auxP);
+             param[ic]=auxP;
+           }
 
-  for(Int_t imod=0;imod<fgkNumberOfSDD;imod++){
-    AliITSCalibrationSDD *cal = new AliITSCalibrationSDD("simulated");
-    numOfBadChannels[imod]=0;
-    Int_t badch[fgkNumberOfChannels];
-    for(Int_t isid=0;isid<=1;isid++){
-      Char_t basFileName[100];
-//      sprintf(basFileName,"%s/SDDbase_mod%03d_sid%d.data",tempDir,imod,isid);
-      sprintf(basFileName,"./SDDbase_mod%03d_sid%d.data",imod,isid);
-      FILE* basFil = fopen(basFileName,"read");
-      if (basFil == 0) {
-       Log(Form("File %s not found.",basFileName));
-       return 2;
-      }      
-      fscanf(basFil,"%d %d %d\n",&im,&is,&isgoodmod);
-      if(!isgoodmod) cal->SetDead();
-      for(Int_t ian=0;ian<(fgkNumberOfChannels/2);ian++){
-       fscanf(basFil,"%d %d %f %f %f %f %f\n",&i,&isgoodan,&baseline,&rawnoise,&cmn,&corn,&gain);
-       Int_t ich=ian;
-       if(isid==1) ich+=256;
-       if(!isgoodan){ 
-         Int_t ibad=numOfBadChannels[imod];
-         numOfBadChannels[imod]++;
-         badch[ibad]=ich;
+           if(polDeg>=0 && polDeg<=AliITSDriftSpeedSDD::GetMaxPolDeg() && 
+              param[0]>minValP0 && param[0]<maxValP0 && param[1]>minValP1){
+             if(polDeg==3){
+               if(modID<kNumberOfSDDLay3){ 
+                 for(Int_t ic=0;ic<4;ic++) aveCoefLay3[ic]+=param[ic];
+                 nPtLay3++;
+               }else{ 
+                 for(Int_t ic=0;ic<4;ic++) aveCoefLay4[ic]+=param[ic];
+                 nPtLay4++;
+               }
+             }
+             AliITSDriftSpeedSDD *dsp=new AliITSDriftSpeedSDD(evNumb,timeStamp,polDeg,param);
+             arr->AddDriftSpeed(dsp);
+             modSet[2*modID+isid]=1;
+           }else{
+             Log(Form("Module %d side %d not accepted, degree=%d, params=%g %g %g %g",modID+240,isid,polDeg,param[0],param[1],param[2],param[3]));
+           }
+         }
        }
-       cal->SetBaseline(ich,baseline);
-       cal->SetNoiseAfterElectronics(ich,rawnoise);
-       Int_t iChip=cal->GetChip(ich);
-       Int_t iChInChip=cal->GetChipChannel(ich);
-       cal->SetGain(gain,isid,iChip,iChInChip);
+       fclose(injFil);
+       Log(Form("Put calib obj for hybrid %d (DDL %d  Carlos %d)",2*modID+isid,iddl,imod));
+       if(modSet[2*modID+isid]) vdrift.AddAt(arr,2*modID+isid);
+      }
+    }
+  }
+
+  // set drift speed for modules with bad injectors
+  for(Int_t ic=0;ic<4;ic++){ 
+    if(nPtLay3>0) aveCoefLay3[ic]/=nPtLay3; // mean parameters
+    else aveCoefLay3[ic]=defCoef[ic]; // default parameters
+    if(nPtLay4>0) aveCoefLay4[ic]/=nPtLay4; // mean parameters
+    else aveCoefLay4[ic]=defCoef[ic]; // default parameters
+  }
+  AliITSDriftSpeedSDD *avdsp3=new AliITSDriftSpeedSDD(evNumb,timeStamp,3,aveCoefLay3);
+  AliITSDriftSpeedSDD *avdsp4=new AliITSDriftSpeedSDD(evNumb,timeStamp,3,aveCoefLay4);
+
+  // Check status of golden modules
+  Int_t idGoldenMod=-1, idGoldenSide=-1;
+  Int_t idGoldenModList[5]={319,319,321,243,243};
+  Int_t idGoldenSideList[5]={0,1,0,0,1};
+  AliITSDriftSpeedSDD* refSpeed=0x0;
+  for(Int_t iGold=0; iGold<5; iGold++){
+    Int_t indexG=2*(idGoldenModList[iGold]-240)+idGoldenSideList[iGold];
+    if(modSet[indexG]){
+      idGoldenMod=idGoldenModList[iGold];
+      idGoldenSide=idGoldenSideList[iGold];
+      AliITSDriftSpeedArraySDD* arrRef=(AliITSDriftSpeedArraySDD*)vdrift.At(indexG);
+      refSpeed=arrRef->GetDriftSpeedObject(0);
+      break;
+    }
+  }
+  TList* correctionList=0x0;
+  if(idGoldenMod>=240 && idGoldenSide>=0){
+    // Get rescaling corrections from OCDB
+    AliCDBEntry* entry = GetFromOCDB("Calib", "RescaleDriftSpeedSDD");
+    if(!entry){
+      Log("RescaleDriftSpeedSDD file not found in OCDB.");  
+    }
+    TList* fullList=(TList*)entry->GetObject();
+    if(!fullList){ 
+      Log("TList object not found in file.");
+    }
+    TString listName=Form("RefMod%d_Side%d",idGoldenMod,idGoldenSide);
+    correctionList=(TList*)fullList->FindObject(listName.Data());
+    if(!correctionList){
+      Log(Form("TList for requested module %d side %d not found",idGoldenMod,idGoldenSide));
+    }else{
+      Log(Form("Use module %d side %d as reference module",idGoldenMod,idGoldenSide));
+      if(refSpeed){
+       Log(Form("Drift speed params for golden module = %g %g %g %g",refSpeed->GetDriftSpeedParameter(0),refSpeed->GetDriftSpeedParameter(1),refSpeed->GetDriftSpeedParameter(2),refSpeed->GetDriftSpeedParameter(3)));
+      }else{
+       AliError("No drift speed object for golden module");
       }
-      cal->SetDeadChannels(numOfBadChannels[imod]);
-      for(Int_t ibad=0;ibad<numOfBadChannels[imod];ibad++){
-       cal->SetBadChannel(ibad,badch[ibad]);
+    }
+  }
+  
+  for(Int_t ihyb=0; ihyb<2*kNumberOfSDDLay3; ihyb++){
+    AliITSDriftSpeedArraySDD *arr=new AliITSDriftSpeedArraySDD();
+    if(modSet[ihyb]==0){ 
+      Int_t iBadMod=ihyb/2+240;
+      Int_t iBadSide=ihyb%2;
+      Bool_t goldenUsed=kFALSE;
+      if(correctionList && refSpeed){
+       Double_t *params=RescaleDriftSpeedModule(correctionList,iBadMod,iBadSide,refSpeed);
+       if(params){
+         AliWarning(Form("No good injector events for mod. %d side %d --> use rescaled values from golden module",iBadMod,iBadSide));
+         AliITSDriftSpeedSDD* dspres=new AliITSDriftSpeedSDD(0,refSpeed->GetEventTimestamp(),3,params);
+         arr->AddDriftSpeed(dspres);
+         arr->SetInjectorStatus(1);
+         goldenUsed=kTRUE;
+       }
       }
-      fclose(basFil);
-
-      Char_t injFileName[100];
-      Int_t evNumb; 
-      UInt_t timeStamp;
-      Float_t param[4];
-      sprintf(injFileName,"./SDDinj_mod%03d_sid%d.data",imod,isid);
-      FILE* injFil = fopen(injFileName,"read");
-      if (injFil == 0) {
-       Log(Form("File %s not found.",basFileName));
-       return 2;
-      }      
-      while (!feof(injFil)){
-       fscanf(injFil,"%d %d",&evNumb,&timeStamp);
-       if(feof(injFil)) break;
-       for(Int_t ic=0;ic<4;ic++) fscanf(injFil,"%f",&param[ic]);
-       cal->SetDriftSpeedParam(isid,param);
+      if(!goldenUsed){
+       AliWarning(Form("No good injector events for mod. %d side %d --> use average values for layer 3",iBadMod,iBadSide));
+       arr->AddDriftSpeed(avdsp3);
+       arr->SetInjectorStatus(0);
       }
+      vdrift.AddAt(arr,ihyb);
     }
-    respSDD.Add(cal);
   }
 
-  AliCDBMetaData *md1= new AliCDBMetaData(); // metaData describing the object
-  md1->SetObjectClassName("AliITSCalibration");
-  md1->SetResponsible("Elisabetta Crescio, Francesco Prino");
-  md1->SetBeamPeriod(0);
-  md1->SetAliRootVersion("head 5 April 2007"); //root version
-  md1->SetComment("This is a test");
-
-  Bool_t retcode = Store("Calib","CalibSDD",&respSDD,md1, 0, kTRUE);
+  for(Int_t ihyb=2*kNumberOfSDDLay3; ihyb<2*kNumberOfSDD; ihyb++){
+    if(modSet[ihyb]==0){ 
+      AliWarning(Form("No good injector events for mod. %d side %d --> use average values for layer 4",ihyb/2,ihyb%2));
+      AliITSDriftSpeedArraySDD *arr=new AliITSDriftSpeedArraySDD();
+      arr->AddDriftSpeed(avdsp4);
+      arr->SetInjectorStatus(0);
+      vdrift.AddAt(arr,ihyb);
+    }
+  }
 
-  if(retcode) return 0;
+  AliCDBMetaData *md= new AliCDBMetaData();
+  md->SetResponsible("Francesco Prino");
+  md->SetBeamPeriod(0);
+  md->SetComment("AliITSDriftSpeedSDD from injector events");
+  Bool_t retCode = Store("Calib","DriftSpeedSDD",&vdrift,md,0, kTRUE);
+  if(retCode) return 0;
   else return 1;
 }
+
+//______________________________________________________________________
+Double_t* AliITSPreprocessorSDD::RescaleDriftSpeedModule(const TList* theList,
+                                                        Int_t iBadMod, 
+                                                        Int_t iBadSide,
+                                                        const AliITSDriftSpeedSDD* refSpeed)
+  const
+{
+  // Rescale driftSpeed for a drift region starting from values of golden module
+
+  if(!refSpeed) return 0x0;
+  TString hisName=Form("hRatioMod%d_Side%d",iBadMod,iBadSide);
+  TH1D* h=(TH1D*)theList->FindObject(hisName.Data());
+  if(!h) return 0x0;
+
+  TF1* fpoly=new TF1("fpoly","pol3",0.,255.);
+  for(Int_t iAnode=0; iAnode<256; iAnode++){
+    Double_t vref=refSpeed->GetDriftSpeedAtAnode((Double_t)iAnode);
+    Double_t vcorr=h->GetBinContent(iAnode+1)*vref;
+    h->SetBinContent(iAnode+1,vcorr);
+  }
+  h->Fit(fpoly,"RNQ");
+  Double_t *params=new Double_t[4];
+  for(Int_t iPar=0; iPar<4; iPar++) params[iPar]=fpoly->GetParameter(iPar);
+  delete fpoly;
+  return params;
+}
+
+//______________________________________________________________________
+Bool_t AliITSPreprocessorSDD::ProcessDCSDataPoints(TMap* dcsAliasMap){
+  // Process DCS data
+  AliITSDCSAnalyzerSDD *dcs=new AliITSDCSAnalyzerSDD();
+  dcs->AnalyzeData(dcsAliasMap);
+  TObjArray refDCS(kNumberOfSDD);
+  refDCS.SetOwner(kFALSE);
+  for(Int_t imod=0;imod<kNumberOfSDD;imod++){
+    AliITSDCSDataSDD *dcsdata=dcs->GetDCSData(imod);
+    refDCS.Add(dcsdata);
+  }    
+  AliCDBMetaData *md= new AliCDBMetaData();
+  md->SetResponsible("Francesco Prino");
+  md->SetBeamPeriod(0);
+  md->SetComment("AliITSDCSDataSDD objects from DCS DB");
+  Bool_t retCode = StoreReferenceData("DCS","DataSDD",&refDCS,md);
+  return retCode;
+}
+