XMM-Newton Science Analysis System
epexposure (epexposure-0.16) [xmmsas_20211130_0941-20.0.0]
The first livetime factor is mode dependent and constant for each exposure. It
corresponds to the ratio of integration time to total time. The frame
read-out dead-time is calculated in epframes
already and appears
(implicitly) in the TIMEDEL entries in the EXPOSURE extension
which are smaller than the frame interval by a factor FC0.
This factor is also written by epframes
into the keyword AX_FC0.
XMM-Newton SOC -- 2021-11-30