A required filename parameter has been left empty, indicating that a
runtime default value should be supplied by the task, but an
appropriate default cannot be inferred from the other parameter
The angular distribution file (parameter angdistset) could
not be accessed.
The SOURCES table has no entry with the specified source
index number (parameter source).
Either the event list (parameter evlist) contains no
exposure map extensions at all, or none of the exposure maps enclose
a non-zero area.
This task is not designed to generate a response matrix consistent
with a background spectrum (HDUCLAS2=BKG). If enabled,
parameter spectrumset should refer to either a NET or a
A spectrum file has been provided (parameter spectrumset)
and its channel definitions are incommensurate with the channels
defined by the event list (parameter evlist). The spectrum
channels must align with some integral rebinning of the
EVENTS table dispersion channels.
The existing matrix to be modified has its rows (incident energy
bins) in an unexpected order. This task requires that the incident
energy bins be contiguous and in ascending order. Matrices not
compliant with this requirement are not invalid according to the
OGIP standard, but this task simply lacks the logic necessary to
handle irregularities. In any case this task does not expect to be
used to modify a response matrix generated by some other task, and
so this error should never occur.
The event list provided (parameter evlist) contains an
internal inconsistency: the channel definitions in the
EVENTS table do not align with the channel definitions in
the exposure map extensions.
corrective action: Each such exposure map is discarded, and no response will be associated with its node.