obsid   target                  start time      int time    inst    ccd     grat    drop rate(%)
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22411	gx_5-1              	189:23098.859		18.4	ACIS-S	S2		HETG	3.9
22413	gx_5-1              	263:76773.421		20.1	ACIS-S	S2		HETG	6.2
22414	gx_5-1              	276:49223.860		20.1	ACIS-S	S2		HETG	3.5
22415	gx_5-1              	300:07347.114		20.1	ACIS-S	S2		HETG	8.4
22416	gx_5-1              	309:79730.465		19.1	ACIS-S	S2		HETG	12.4