Double_t active;
for (Int_t i=0; i<mapping->GetNumDdl(); i++) {
idDDL= i+offset;
+ if (iDDL<0) continue;
Int_t patch = mapping->GetPatchFromEquipmentID(idDDL);
Int_t roc=mapping->GetRocFromEquipmentID(idDDL);
AliTPCCalROC *calRoc=deadMap->GetCalROC(roc);