Overall internal validation
The overall internal validation of the frequency maps is seen thanks to several tests:
- difference between the PR2 (2015) and PR3 (2018) frequency maps,
- survey difference maps for the PR2 and the PR3 frequency maps,
- spectra of the PR2 and the PR3 data splits,
- comparison of the simulated noise and systematic residuals and the PR3 data.
Frequency maps for the PR2 and the PR3 and their difference
|PR2 frequency maps||PR3 frequency maps||difference|
Survey difference maps for the PR2 and the PR3 data
|2015 survey difference maps||2017 survey difference maps|
Spectra of the PR2 and the PR3 data splits
This figure shows the EE and BB spectra of the 2015 and 2017 detset, half-mission and rings (for 2017 only) maps at 100, 143, 217, and 353 GHz. The auto-spectra of the difference maps and the cross-spectra between the maps are shown. The sky fraction used here is 43 %. The bins are: bin=1 for Planck-2020-A3 (see detailled explanations there).; bin=5 for ; bin=10 for ; bin=20 for ; and bin=100 for . This figure is taken from
Comparison of the simulated noise and systematic residuals and the PR3 data
This figure shows the noise and systematic residuals in TT, EE, BB, and EB spectra, at the three CMB frequencies, for difference maps of the ring (red) and half-mission (blue) null tests binned by . Data spectra are represented by thick lines, and the averages of simulations by thin black lines. For the simulations, we show the 16 % and 84 % quantiles of the distribution with the same colours. This figure is taken from Planck-2020-A3 (see detailled explanations there).
- Planck 2018 results. III. High Frequency Instrument data processing and frequency maps, Planck Collaboration, 2020, A&A, 641, A3.
Cosmic Microwave background