Page History

...

One could argue that there is an improvement from cutting the Hockey Stick shapes, but that improvement is very slight.

One theory for the existence of the L shapes is masking due to bad pixels on the detector. These L shapes could actually be 4 pixel squares with a pixel masked which results in this odd shape. To test this theory, the bad pixel mask for the detector was overlayed with a plot of the max pixel for each L shape. If the theory is true, we should find bad pixels adjacent to the L shape max pixels. Of the 434 L shapes, this was true only 19 of these peaks which is about 4.4% of the L shapes. The follow plot shows a section of the entire detector. It is important to note that this number of 19 is an upper bound. Because the orientation of the L shape is unknown, it could be coincidental that there is a bad pixel adjacent to the L shape max pixel. So the actually number may be lower. Therefore this theory doesn't hold and so these L shapes seen are not caused by the bad pixel mask.

Image Added