A second check of the quality of a cleaned image: CHI square test

Next to the comparision between the component map and the residul map, the quality of the cleaned images can also be tested with a CHI square test.

The Standard Example: two gaussian sources

IDL> o = hsi_image()
IDL> cleaned_map = o -> getdata(image_alg='clean',clean_no_chi=0)

by setting the keyword 'NO_CHI' to zero, a window is displayed showing the modulation pattern (blue = observed, white = clean components):


some more information about the displayed maps:


Try to enhance the cleaning by playing around with the following parameters:

QUESTIONS/COMMENTS/ETC. to Säm Krucker, krucker@ssl.berkeley.edu, 510 643 3101