Adapt boundary of 2d hit maps to detector surface in Sim10
Change for Sim10 corresponding to what is in !1091 (merged) for Sim11
May be good to back-port this to Sim09 so that the monitoring is the same.
Change for Sim10 corresponding to what is in !1091 (merged) for Sim11
May be good to back-port this to Sim09 so that the monitoring is the same.