Different corrections have been applied to the 2018 data releases, and when available, correction maps are provided in PLA.
In the 2018 release an iterative schema for the phometric calibration has been adopted. In case of 70GHz this iterative procedure didn't converge at the time of the release. As a consequence, we expect that low-level residuals are still present in the 2018 LFI maps, with a pattern similar to that of the 2015 maps, though with significantly lower amplitude. For the 2018 release, we adopt the dfference between the two last iterations as a spatial template of residual gain uncertainties projected onto the sky. This template is used only at 70 GHz (already applyed in the maps released) and made available trought the PLA (see section 3 of Planck-2020-A2).
LFI BandPass Leackage correction
BandPass Leackage correction estimation is described is section 7 of Planck-2020-A2. We release BandPass corrected maps, BandPass uncorrected maps and BandPass correction Maps LFI_CorrMap_???-BPassCorr_1024_R3.00_???.fits
List of LFI Correction maps
|70GHz Template||LFI_CorrMap_070-Gain-tpl_1024_R3.00_full.fits||ONLY for the 70GHz|
|BandPass Correction full period||LFI_CorrMap_???-BPassCorr_1024_R3.00_full.fits||n/a|
|BandPass Correction full period Ring-Half||LFI_CorrMap_???-BPassCorr_1024_R3.00_full-ringhalf-?.fits||n/a|
|BandPass Correction single year||LFI_CorrMap_???-BPassCorr_1024_R3.00_year-?.fits||n/a|
|BandPass Correction year combination||LFI_CorrMap_???-BPassCorr_1024_R3.00_year?-?.fits||n/a|
|BandPass Correction survey combination||LFI_CorrMap_???-BPassCorr_1024_R3.00_survey-1-3-5-6-7-8.fits||n/a|
- Planck 2018 results. II. Low Frequency Instrument data processing, Planck Collaboration, 2020, A&A, 641, A2.
Planck Legacy Archive
(Planck) Low Frequency Instrument
Flexible Image Transfer Specification