Determine noisy channels based on the S-curves

Description

The S-curves give us a direct measurement of the channel noise/ENC. We should be able to use to information to detect obviously noisy channels and subsequently mask them.

Possible fixes

Enhance the S-curves analysis (worked on in !47 (merged)) to detect noisy channels and flags them in its output tree. Typically, one could find outliers using the median + inter-quartile range method (as proposed in !48 (merged) for noisy channels detection based on the occupancies).