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A set of classes to manage data cuts has been implemented in the dataSubselector package. These classes are now used by the observationSim and Likelihood packages for managing the data selections. Use of these classes have has several consequences:
- Since the cut information is encoded in the DSS FITS header keywords, there is now a mechanism for verifying that the various files used in any given analysis, e.g., event files, maps of live time, Likelihood's exposure maps, have been created assuming a consistent set of data selections. This checking is being performed by the Likelihood applications.
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- If an acceptance cone is not specifed in obsSim (or by any other means, e.g., via such selection using the GSSC data server), one must use the dataSubselector tool (or some other filtering tool that writes the DSS keywords) to specify the ROI for likelihood.