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(McEnery) Geomagnetic latitude is already included in the event data definition (which is FT1 + a bunch of extra variables). Someone who wants to work with a fits file (and the FT1 quantities) could just use the event data directly.
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29 June 2010
27. Including PROC_VER keyword
(Digel) This is summarizing what was worked out between Maria-Elena and Don Horner to allow the FSSC to handle receiving reprocessed data without interrupting ingest of output from the L1 pipeline. This 'dual ingest pipeline' scheme will allow reprocessed data to be transferred in the background, for little or no downtime when a switch is made to a new version. Incidentally the naming scheme of the FT1 files is also being modified to include the processing version as part of the name; that change is not covered here but will be documented in the File Format Document. The addition would go in LS1 as well.
definition in progress
28. Including PASS_VER keyword
(Digel) This keyword would have a numerical value indicating the analysis pass used to classify the events (e.g., Pass 6 or Pass 7.3), and would be used by the Science Tools to avoid mixing FT1 files with different analysis pass values. Like the above, this keyword would be implemented in a reprocessing. Initial thinking had been that this would need to be a new column, but Jim is thinking that having the Science Tools make a consistency check using just a header keyword (e.g., if given a list of input files) would not be difficult. This keyword would be set by makeFT1 and the value to assign would be passed to makeFT1. It would go in the EVENTS extensions of FT1 (and also LS1) files