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RadioAstronomySoftwareGroup / pyuvsim

A ultra-high precision package for simulating radio interferometers in python on compute clusters.
https://pyuvsim.readthedocs.io/en/latest/
BSD 3-Clause "New" or "Revised" License
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Big changes in 2nd gen reference sims using diffuse maps #423

Open jpober opened 1 year ago

jpober commented 1 year ago

In 2.3_airy_flat_PS: ~Two of magnitude of difference in visibility amplitudes. (New runs are smaller.) Phases are different too; visibilities are not scaled copies of each other.

Change seems to appear between v1.2.1 and v1.2.2. (Although it may not account for all the difference.)

In 2.3_airy_GSM: Very strange change. Antennas seem to have three tiers of maximum autocorrelation amplitude in the new sims (as opposed to basically uniform autocorrelation amplitude).

See: https://www.overleaf.com/9613713963jthpjznmmyvx

mkolopanis commented 5 months ago

I remember in 7a3a127 we fixed a bug when nsky_parts > 1 had missing data. Have we re-run sims to compare since then?

jpober commented 5 months ago

Daniya did this testing and confirmed things were much better with EoR sky models. I think she also checked the reference simulations, but we are re-checking that now as well.