including files 
XIS3CI_from20070501_1856to20070502_0000.evlist.gz
XIS3CI_from20070502_0000to20070503_0000.evlist.gz
XIS3CI_from20070503_0000to20070503_1830.evlist.gz
XIS3CI_from20070504_1130to20070505_0000.evlist.gz
XIS3CI_from20070505_0000to20070506_0000.evlist.gz
XIS3CI_from20070506_0000to20070507_0000.evlist.gz
XIS3CI_from20070507_0000to20070507_1436.evlist.gz
XIS3CI_from20070509_0158to20070510_0000.evlist.gz
XIS3CI_from20070510_0000to20070511_0000.evlist.gz
XIS3CI_from20070511_0000to20070512_0000.evlist.gz
XIS3CI_from20070512_0000to20070512_1446.evlist.gz
XIS3CI_from20070513_0000to20070514_0000.evlist.gz
XIS3CI_from20070514_0000to20070514_2018.evlist.gz
XIS3CI_from20070518_1543to20070519_0000.evlist.gz
XIS3CI_from20070519_0000to20070519_2346.evlist.gz
XIS3CI_from20070520_0027to20070520_2344.evlist.gz
XIS3CI_from20070521_0026to20070522_0000.evlist.gz
XIS3CI_from20070522_0000to20070523_0000.evlist.gz
XIS3CI_from20070523_0000to20070524_0000.evlist.gz
XIS3CI_from20070524_0000to20070524_2359.evlist.gz
XIS3CI_from20070525_0021to20070525_2357.evlist.gz
XIS3CI_from20070526_0020to20070526_2332.evlist.gz
XIS3CI_from20070527_0018to20070527_2332.evlist.gz
XIS3CI_from20070528_0016to20070528_2351.evlist.gz
XIS3CI_from20070529_0015to20070529_2349.evlist.gz
XIS3CI_from20070530_0014to20070530_2346.evlist.gz
XIS3CI_from20070531_0013to20070531_2345.evlist.gz
There are 3 pixels with more than 1878 events in 187852 frames in the cal source region.
         891         863       45845
          24         978       26989
         919        1011        3197