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Checking (RA,DEC) directions: (Philippe)
The 2 runs with significant differences are the ones reported by Don with the weird LIVETIME differences.
Since the (theta,phi) values don't change, the differences occur when going from instrument to sky coordinates. But the differences are on the event basis so it doesn't look like a calibration difference between the 2 processings.
There is no correlation between the angular differences and the LIVETIME differences.