Correction maps

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General description

Different corrections have been applied to the 2018 data releases, and when available, correction maps are provided in PLAPlanck Legacy Archive.

Below short description these corrections can be found, furthers details for LFI(Planck) Low Frequency Instrument are avialble in Planck-2018-l02[1].

LFI(Planck) Low Frequency Instrument Template

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(Planck) Low Frequency Instrument 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 PLAPlanck Legacy Archive (see section 3 of Planck-2018-l02[1]).

LFI(Planck) Low Frequency Instrument BandPass Leackage correction

BandPass Leackage correction estimation is described is section 7 of Planck-2018-l02[1]. We release BandPass corrected maps, BandPass uncorrected maps and BandPass correction Maps.

List of LFI(Planck) Low Frequency Instrument Correction maps

LFI(Planck) Low Frequency Instrument FITSFlexible Image Transfer Specification Correction Maps
Type Filename Comment
70GHz Template LFI(Planck) Low Frequency Instrument_CorrMap_070-Gain-tpl_1024_R3.00_full.fits ONLY for the 70GHz
BandPass Correction full period LFI(Planck) Low Frequency Instrument_CorrMap_???-BPassCorr_1024_R3.00_full.fits n/a
BandPass Correction full period Ring-Half LFI(Planck) Low Frequency Instrument_CorrMap_???-BPassCorr_1024_R3.00_full-ringhalf-?.fits n/a
BandPass Correction single year LFI(Planck) Low Frequency Instrument_CorrMap_???-BPassCorr_1024_R3.00_year-?.fits n/a
BandPass Correction year combination LFI(Planck) Low Frequency Instrument_CorrMap_???-BPassCorr_1024_R3.00_year?-?.fits n/a
BandPass Correction survey combination LFI(Planck) Low Frequency Instrument_CorrMap_???-BPassCorr_1024_R3.00_survey-1-3-5-6-7-8.fits n/a
  1. 1.0 1.1 1.2 Planck 2018 results. II. Low Frequency Instrument data processing, Planck Collaboration, accepted by A&A, (2018).