phasecalc is meant to be used in conjunction with evselect or xmmselect to perform second order filtering.
phasecalc
is not a general tool, in that it has a very specific
knowledge of how to calculate the absoulte time of an event based on
the XMM-Newton conventions. On the other hand, this affords a paramter
interface focussed on the astronomical data. For a more generic tool
to perform arbitrary math on binary tables see tabcalc
(
![[*]](../icons/crossref.png){kind=icon}
).
