Difference between revisions of "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 PLA. | |
| − | + | ||
| + | Below short description these corrections can be found, furthers details for LFI are avialble in {{PlanckPapers|planck2016-l02}}. | ||
| + | |||
| + | ==LFI 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 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 LFI_CorrMap_070-Gain-tpl_1024_R3.00_full.fits. I shoudl simply Subtracted from teh map | ||
| + | |||
| + | ==LFI BandPass Leackage correction== | ||
| + | |||
| + | BandPass Leackage correction estimation is described is section 7 of {{PlanckPapers|planck2016-l02}}. We release BandPass corrected maps, BandPass uncorrected maps and BandPass correction Maps LFI_CorrMap_???-BPassCorr_1024_R3.00_???.fits | ||
Revision as of 14:03, 6 July 2018
General description[edit]
Different corrections have been applied to the 2018 data releases, and when available, correction maps are provided in PLA.
Below short description these corrections can be found, furthers details for LFI are avialble in Planck-2020-A2[1].
LFI Template[edit]
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 LFI_CorrMap_070-Gain-tpl_1024_R3.00_full.fits. I shoudl simply Subtracted from teh map
LFI BandPass Leackage correction[edit]
BandPass Leackage correction estimation is described is section 7 of Planck-2020-A2[1]. We release BandPass corrected maps, BandPass uncorrected maps and BandPass correction Maps LFI_CorrMap_???-BPassCorr_1024_R3.00_???.fits
- ↑ 1.01.1 Planck 2018 results. II. Low Frequency Instrument data processing, Planck Collaboration, 2020, A&A, 641, A2.
Planck Legacy Archive
(Planck) Low Frequency Instrument
