To estimate the effect of calorimeter pedestals drift due to temperature variations during pointing observation I compared pedestals determined from the run 292376780 collected at the end of pointing observation (April 07 23:46 UTC) with initial pedestals from 292158898 collected just before the start of pointing observation (April 05, 11:14 UTC).
Pedestal drift for each calorimeter channel is show on four histograms below, separately for each energy range: