obsid   target                  start time      int time    inst    ccd     grat    drop rate(%)
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4354	G21.5-0.9[Chip_     	140:54132.158		11.6	ACIS-I	I6		NONE	10.6
4175	FORNAX_CLUSTER      	149:41987.222		36.5	ACIS-I	I5		NONE	22.9
4206	3810                	210:58841.834		12.2	ACIS-S	I6		NONE	9.6