including files 
XIS0_from20070419_1012to20070420_0000.evlist.gz
XIS0_from20070420_0000to20070421_0000.evlist.gz
XIS0_from20070421_0000to20070421_0618.evlist.gz
There are 2 pixels with more than 183 events in 14995 frames in the cal source region.
         864         830         306
          91         918         237