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Bug in tabgtigen

A bug has been uncovered in tabgtigen. If one applies a logical expression on the TIME column, such as:

tabgtigen table=eventsfile.fits gtiset=output.gti expression="(TIME < 107675200)"

the resulting START or STOP column values may be significantly incorrect. This affects the column TIME only.

This bug will be fixed in a future SAS version. Meanwhile, users may consider to apply such criteria at scientific product accumulation level, through the expression parameter of evselect or xmmselect.