There was a bug in hutch_list_pixel_sq that I corrected. The floor functions need to be ceiling. However, I need to check whether we are actually getting the correct results when the input parameter Q is set to 0.0915 instead of 0.0305 in param_file.in. It works for the other cases I checked, but this one didn't behave exactly like the others (comment out the last 2-line write statement to see). Setting Q=0.0915 makes 3x3 pixels. You can also set Q=0.0305, 0.061, 0.0915, and 0.122.