obsid   target                  start time      int time    inst    ccd     grat    drop rate(%)
-----------------------------------------------------------------------------------------------------------
7587	Crab_Pulsar         	34:36145.552		47.4	ACIS-S	S6		HETG	23.5
8369	Cas_A[S3,-120,-     	69:13196.910		 2.1	ACIS-S	I6		NONE	9.8