The geant energy deposit 'de' is converted to ADC : const int maxAdc=4096; const int maxEt=60; // in GeV samplingFraction=0.05; (what is not true in M-C) recoE=de/samplingFraction; adc=(int) (maxAdc * recoE/maxEtot/cosh(feta[ieta-1]) );20 consecutive minb events; X= (sector-1)*5+subsector-1; Y =eta bin; Z=ADC.