Schematic diagram of the time-constant fitting process for the 353 GHz channels. The main difference from the CMB channels is the fact that the longest time constants from the glitch templates that cannot be constrained by the planet signal are renormalized so that their relative contribution is injected properly in the temporal model, and the fast part of the time response is re-evaluated to reduce the co-scan distortion and induce a beam closer to optical. This is particularly significant for PSB pairs, where incorrectly deconvolved fast time constants can artificially induce beam mismatch and therefore spurious polarization.