# Difference between revisions of "HFI-Validation"

The overall internal validation of the frequency maps is performed 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 FFP10 simulations and the PR3 data.

Frequency maps for the PR2 and the PR3 and their difference

This table shows the PR2 and PR3 maps and their differences in I, Q, and U. This table is complementary of the figure in Planck-2020-A3[1] (see detailled explanations there).

Comparaison of PR2 and PR3 I, Q and U maps and their difference.
PR2 frequency maps PR3 frequency maps difference
I Q U I Q U I Q U
100 GHz
143 GHz
217 GHz
353 GHz
545 GHz . . . . . .
857 GHz . . . . . .

Survey difference maps for the PR2 and the PR3 data

This table shows the PR2 and PR3 survey difference maps ((S1+S3)-(S2+S4))in I, Q, and U. This table is taken from Planck-2020-A3[1] (see detailled explanations there).

Comparaison of PR2 and PR3 I, Q and U survey difference maps.
PR2 survey difference maps PR3 survey difference maps
I Q U I Q U
100 GHz
143 GHz
217 GHz
353 GHz
545 GHz . . . .
857 GHz . . . .

Spectra of the PR2 and the PR3 data splits

This figure shows the EE and BB spectra of the PR2 and PR3 detset, half-mission and rings (for PR3 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 ; bin=5 for ; bin=10 for ; bin=20 for ; and bin=100 for . This figure is taken from Planck-2020-A3[1] (see detailled explanations there).

Comparison of the FFP10 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[1] (see detailled explanations there).

## References

Cosmic Microwave background