Notes on calibration changes for beamform (spectrum) data
(1) From 2023-09-26T05:00 Norm factor ‣ time sample 24
(2) From 2024-01-17T05:00 N^2 factor taken care of.
(3) From 2024-03-08, [faulty data] need to multiply N^2 after this day
(4) From 2024-03-28, [N^2 are corrected] normalization correctly done automatically after this day
N^2 correction:
function gen_beam_flux_factor generates csv file takes care of the N^2 and caltable scaling (need to use before 03-28 (but 03-08 to 03-28, need to multiply by N^2)).
Todo:
Background subtraction
Primary beam correction
caltable location:
/nas6/ovro-lwa-data/calibrations/caltables_beam/
Fits:
hdu[0]: dynamic spectrum (raw from h5)