Added protection against zero calibration coefficients.

diff --git a/PHOS/AliPHOSPreprocessor.cxx b/PHOS/AliPHOSPreprocessor.cxx
index 7a36d7a2b62305363e63ff8923162e47275e1abf..7fc417079045d1fec949bb7c69dfa0b1fe504d28 100644 (file)
--- a/PHOS/AliPHOSPreprocessor.cxx
+++ b/PHOS/AliPHOSPreprocessor.cxx
@@ -171,7 +171,10 @@ UInt_t AliPHOSPreprocessor::Process(TMap* /*valueSet*/)
          //TODO: dead channels exclusion!
          if(histo) {
            coeff = histo->GetMean()/refMean;
-           calibData.SetADCchannelEmc(mod+1,col+1,row+1,0.001/coeff);
+           if(coeff>0)
+             calibData.SetADCchannelEmc(mod+1,col+1,row+1,0.001/coeff);
+           else 
+             calibData.SetADCchannelEmc(mod+1,col+1,row+1,0.001);
            AliInfo(Form("mod %d col %d row %d  coeff %f\n",mod,col,row,coeff));
          }
          else