Generally the spectrum resulting from a fast speed AOT 1 observation is improved after glitch removal. However, when points belonging to spectral lines are flagged as glitched, one must be cautious about the line profiles and fluxes (except for band 4) because the line profile may be significantly distorted by glitch removal.
If a user wants to derive line fluxes from fast AOT 1's it will be necessary to check the datapoints around a line to see if they are flagged as glitched. If they are it may be necessary to visit one of the data centers so that additional data processing can occur.