The deglitching performed by Derive-SPD is believed to remove the majority of the glitches in the data. However, some glitches may still remain undetected. In particular, any glitches which occur during the period of time discard at the beginning of each ramp are not currently detected.
In addition it has been found that some (large) glitches have a long lasting effect on the detector responsivity. They can cause one scan for one detector to be significantly higher for some period of time. At this time no processing solution is known for this problem.