Date: Wed, 7 May 2003 14:10:51 GMT
Subject: PN rmf energy axis
Full_Name: Isao Takahashi
Submission from: (NULL) (126.96.36.199)
Dear XMM helpdesk,
According to the event file, PN PIs locate every 5eV,
but E_MIN and E_MAX in rmf do not in low energy band.
I use the latest CCFs and SAS5.4.1.
If the rmf value is true, does evselect not strictly function correctly?
Additionally, E_MIN and E_MAX do not always coincide among rmfs,
at least between my handmade rmf and canned rmf(epn_ff20_sdY?.rmf),
e.g. E_MIN@CHANNEL=100 is 5.2632397E-01(handmade), 5.3531796E-01(canned).
Which rmf is more recommended at present,
and will these discrepancies be fixed in the future,
i.e. all energy digits be 5eV(E_MIN@100ch=5E-01)?