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Map based simulations for the Simons Observatory
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Plan new noise simulations #21

Closed zonca closed 4 years ago

zonca commented 5 years ago
zonca commented 5 years ago

@keskitalo do we have hitmaps from MSS-0001 we can use?

keskitalo commented 5 years ago

@zonca the simulation is only 20% complete but the hitmaps for the subsets are designed to be very similar. All of the results are being written here: /global/cscratch1/sd/keskital/pwg-scripts/pwg-tds/mss-0001/genesis/out/00000000. Hit maps are the files that end with _hmap.fits.

zonca commented 5 years ago

get the new noise model: https://github.com/simonsobs/V3_calc/issues/2#issuecomment-536060305

zonca commented 4 years ago

the available hitmaps are:

LT0_UHF1_01_of_20.nominal_telescope_all_time_all_hmap.fits  LT5_MFS2_01_of_20.nominal_telescope_all_time_all_hmap.fits
LT0_UHF2_01_of_20.nominal_telescope_all_time_all_hmap.fits  LT6_LF1_01_of_20.nominal_telescope_all_time_all_hmap.fits
LT1_UHF1_01_of_20.nominal_telescope_all_time_all_hmap.fits  LT6_LF2_01_of_20.nominal_telescope_all_time_all_hmap.fits
LT1_UHF2_01_of_20.nominal_telescope_all_time_all_hmap.fits  ST0_UHF1_01_of_20.nominal_telescope_all_time_all_hmap.fits
LT2_MFF1_01_of_20.nominal_telescope_all_time_all_hmap.fits  ST0_UHF2_01_of_20.nominal_telescope_all_time_all_hmap.fits
LT2_MFF2_01_of_20.nominal_telescope_all_time_all_hmap.fits  ST1_MFF1_01_of_20.nominal_telescope_all_time_all_hmap.fits
LT3_MFF1_01_of_20.nominal_telescope_all_time_all_hmap.fits  ST1_MFF2_01_of_20.nominal_telescope_all_time_all_hmap.fits
LT3_MFF2_01_of_20.nominal_telescope_all_time_all_hmap.fits  ST2_MFS1_01_of_20.nominal_telescope_all_time_all_hmap.fits
LT4_MFS1_01_of_20.nominal_telescope_all_time_all_hmap.fits  ST2_MFS2_01_of_20.nominal_telescope_all_time_all_hmap.fits
LT4_MFS2_01_of_20.nominal_telescope_all_time_all_hmap.fits  ST3_LF1_01_of_20.nominal_telescope_all_time_all_hmap.fits
LT5_MFS1_01_of_20.nominal_telescope_all_time_all_hmap.fits  ST3_LF2_01_of_20.nominal_telescope_all_time_all_hmap.fits

Tubes have slightly different scanning:

image image image

@keskitalo I plan to simulate them separately, which increases the number of maps from 16 to 22 for each noise realization, but it makes it easier to compare with the time domain simulations. Do you agree?

zonca commented 4 years ago

New noise spectra

image image

zonca commented 4 years ago

discussing noise splits at https://github.com/simonsobs/map_based_simulations/issues/30

zonca commented 4 years ago

about the disk space required to store the simulations with variable NSIDE (#18) and simulating separately the different tubes as the TOD simulations do. I get:

zonca commented 4 years ago

Implementing noise correlations, see as example cross-corralation between the lowest frequency channels, Full notebook

image

image

zonca commented 4 years ago

Ok, the HEALPix version of the release is ready, CAR will follow:

https://github.com/simonsobs/map_based_simulations/blob/master/202002_noise

@mhasself can you pelase crosscheck the noise parameters in https://github.com/simonsobs/map_based_simulations/blob/master/202002_noise/noise.toml? in particular rolloff_ell.

zonca commented 4 years ago

@mhasself do you think rolloff_ell=50 is fine?

mhasself commented 4 years ago

Yes, I think ell=50 is acceptable.

Apologies for the slow reply.

zonca commented 4 years ago

thanks!