6. Image masking¶
There are several reasons a particular pixel in a specific image might not be useful:
The pixel could be “hot,” meaning it isn’t possible to remove the dark current from the pixel.
The pixel could be bad in the sense that it does not respond to light the way the other pixels do.
A cosmic ray can hit the pixel during the imaging.
The following notebooks walk through identifying each of those types of bad pixels and how to create a mask for them.