In Timing mode it is recommended to take the full range of RAW-Y when extracting an EPIC-pn spectrum (in MOS the RAW-Y information is not present). It can be useful to take a restricted RAW-Y range in Burst mode to exclude contamination from the on-axis source. In this case arfgen scales the ARF proportionately to the range selected. Such a scaling is not applied for Timing mode data.
If pile-up is suspected in a Timing mode observation then it can be convenient to exclude the inner columns, containing the highest count rate. In this case a selection such as
(RAWX in [30:34] || RAW in [37:41])
should be used. Here, the inner two columns, RAWX=35 and 36, have been excluded. The encircled energy calculation will correct for the missing columns.
XMM-Newton SOC -- 2023-04-16