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XMM-Newton Science Analysis System

epicbscalgen (ccftools-1.34) [xmmsas_20060628_1801-7.0.0]

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This section documents warnings and errors generated by this task (if any). Note that warnings and errors can also be generated in the SAS infrastructure libraries, in which case they would not be documented here. Refer to the index of all errors and warnings available in the HTML version of the SAS documentation.

 The eboxdetect task failed to find any sources in the image accumulated from the input event list. This is a very unlikely scenario. If it arises, something is fundamentally wrong with the input event table.
 The reference source coordinates are given in a wrong/unrecognized format - see above for the correct one.
 No coordinates have been given for a selected reference source.
 Less than two reference sources have been selected. The above schemes needs at least two because there are three degrees of freedom.
 There has been a numerical error - this should not happen.
 The source detection procedure has failed to uniquely find the user-selected reference source in a newly accumulated image. Try to increase the source radius.
 The maximum number of iterations have been performed without achieving convergence - this is a very unlikely situation.
 All errors of evselect, eboxdetect, attcalc.
 The eboxdetect task has computed a negative flux for a found source - this should not happen.
corrective action: ignore source
 The task has failed to uniquely identify the user-selected reference sources in a newly accumulated image. The source cross-identification is based on a simple integrated flux criterion which is known to be deficient. There is no real problem as long as the sources in question are sufficiently spatially separated. If this is not the case, the algorithm will not abort execution but the user should see an oscillating behavior in $\epsilon$.
corrective action: ignore
 All warnings of evselect, eboxdetect, attcalc.

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XMM-Newton SOC/SSC -- 2006-06-28