Runs one of two methods to clean the image of hot and flickering pixels. Specify the method with the clean_method parameter.
Method 1) This removes pixels by a straight cutoff, all pixels with more than n photons per pixel will be eliminated. First, an image is accumulated. Then, to aid the eye, a Gendreaux plot is displayed. If saoimage is yes, then the uncleaned image is displayed as well. Then a filtered events list is produced. This will be used in further processing, and can be saved by the save clean command.
Method 2) This method uses a Poissionian distribution to reject hot and flickering pixels. For more details, see the help file for cleansis (e.g. give the command fhelp cleansis). First a filtered event list is produced, then this is fed to cleansis, a final event list is produced, which has had all the hot pixels removed. Also a list of the hot pixels is written out. The cleaned file and the hot pixel list can be saved with the save clean command. The uncleaned events file can be saved with the save event command.
Parameters:
NAME TYPE PROMPT DEFAULT ===================================================================== save_file BOOLEAN Do you want to save it before proceed yes clean_method INTEGER Which method (1=sisclean, 2=cleansis) 2 cellsize INTEGER Clean cell size for local background 5 log_prob REAL Enter the log poission prob for clean -5.24 bkg_threshold INTEGER Zero background threshold 3 clean_phalow INTEGER Lower cutoff for hot pixel search clean_phahi INTEGER Upper cutoff for hot pixel search [heat_factor] INTEGER Enter Heat Factor [sis_plot] BOOLEAN Draw the sisclean plot? yes [saoimage] BOOLEAN Plot the uncleaned image? yes