Closed zonca closed 1 year ago
Polarization looks fine:
Did this (and the synchrotron) issue not show up in the SO sims for the same sky models you ran a month ago, Andrea?
J
On Fri, Jun 2, 2023 at 2:34 PM Andrea Zonca @.***> wrote:
Polarization looks fine:
[image: image] https://user-images.githubusercontent.com/383090/242995320-ebc31748-3b86-4e77-b61d-bcba52612af2.png
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@jdborrill the synchrotron issue yes, see https://github.com/simonsobs/map_based_simulations/issues/44#issuecomment-1481586936. I asked if someone else could investigate the issue on the Penexp call and on Slack https://simonsobs.slack.com/archives/CE44LGAAK/p1679592345528889.
About dust, I also noticed it, see https://nbviewer.org/gist/zonca/7026e5f4fd9ef304a89f1c171e43f2ce, I didn't flag it because I assumed it was due to how we generate small scales. Also now I think the same, but if someone else also looks at it better. And anyway it is better to flag it.
it might be related to spectral indices indeed, @zonca the spectra param. maps should be produced at ellmax=2000 (this was because of testing purposes but we should have kept the same ellmax as the amplitude maps. therefore small scales behave differently at different multipoles and different freq., this is why we do see a clear glitch .
thanks @giuspugl, I will look into this.
confirm there is an issue both in beta and Td, templates are unaffected
Synchrotron beta looks fine
it was a bug in the notebook that generates the spectrum of the small scales, it was using Lmax=2048 instead of 16384. now:
I am regenerating the beta and Td maps at all resolutions, after we figure out the synchrotron issue, I'll release 3.4.0b9 and rerun the updated models.
confirm there is an issue both in beta and Td, templates are unaffected
Beta at 2048 and 4096
Td at 2048 and 4096
This is great! thanks a lot @zonca for addressing this!
this is going to be fixed in 3.4.0b9
ok, the verification spectra are fine now:
@giuspugl I am looking rough spectra of DC-0 inputs for validation purposes. These are unmasked full sky anafast spectra up to 2.5 * ellmax.
I noticed a drop around ell=2000 in dust
d10
in all channels, worse at low frequencies:What is strange is that this does not show up in
d9
, which has the same templates.so it must be coming from dust temperature or spectral index?
I haven't transferred the maps to NERSC yet, will post here when I do.