Return the avrage signal for a MIp in a given calorimeter.
ICAL : number of the calorimeter. CTYP : +ve : Cylindrical detector. -ve : Plane detector.
From /ZTBAC/ MASICB, Average signal of a Mip for Barrel calorimeter From /ZTFWC/ MASICF, Average signal of a Mip for forward calorimeter
none.