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On Wednesday, Jim released v9r3 of the Science Tools. Here are the differences from v9r2p2. The biggest news is that the new versions of the pulsar tools have been included (see below), but the release also includes important fixes (e.g., in gtburstfit) and enhancements (e.g., speed of gtselect - see below).
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Jim has worked out a filtering expression for gtselect and gtmktime that applies "zenith angle cuts to FT1 data without incurring additional excessive computational cost in the likelihood analysis." In general this is a combination of applying zenith angle cuts on FT1 files and also creating GTIs to remove time intervals when the horizon would cross the ROI (or source region). Depending on the pointing history and the zenith angle range of the ROI, the time ranges actually removed can be very small. Jim is working on evaluating and refining the approach.
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