apply cleaning mask loaded from DL1 files
from ctapipe.io import read_table
from lstchain.io.io import dl1_images_lstcam_key
tab = read_table('dl1_simtel_corsika_theta_23.161_az_260.739_run100.h5', path=dl1_images_lstcam_key)
tab['image_mask']
apply the cleaning mask to both channels
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To do so, we will need more recent lstchain files and therefore update the environment (lstchain > 0.8) - see !195