ACT

The kszx.act module contains functions for downloading/parsing ACT data products.

References

kszx.act.read_cmb(freq, dr, *, night=False, download=False)

Returns a pixell map. We currently only support act+planck srcfree maps.

Function args:

  • freq (integer): either 90, 150, or 220.

  • dr (integer): currently, dr=5 and dr=6 are supported.

  • night (boolean): either True (for night) or False (for daynight).

  • download (boolean): if True, then all needed data files will be auto-downloaded.

(Note that for ACT DR6, there are two types of ACT+Planck coadds: DR4+DR6+Planck and DR6+Planck. According to Mat, “I would probably go with the latter since it’s more homogenous, and the dr4 data isn’t going to make a huge difference in sensitivity”, so I’m using DR6+Planck.)

kszx.act.read_ivar(freq, dr, *, night=False, download=False)

Returns a pixell map. We currently only support act+planck srcfree maps.

Function args:

  • freq (integer): either 90, 150, or 220.

  • dr (integer): currently, only dr=5 and dr=6 are supported.

  • night (boolean): either True (for night) or False (for daynight).

  • download (boolean): if True, then all needed data files will be auto-downloaded.

kszx.act.read_beam(freq, dr, lmax=None, *, night=False, download=False)

Returns a 1-d numpy array of length (lmax+1). We currently only support act+planck srcfree maps.

Function args:

  • freq (integer): either 90, 150, or 220.

  • dr (integer): currently, only dr=5 and dr=6 is supported.

  • lmax (integer): if None, then a large lmax will be used.

  • night (boolean): either True (for night) or False (for daynight).

  • download (boolean): if True, then all needed data files will be auto-downloaded.

kszx.act.read_cluster_mask(download=False)

Returns the cluster mask from https://arxiv.org/abs/2307.01258 as a pixell map.

kszx.act.read_nilc_wide_mask(download=False)

Returns the Galactic mask from https://arxiv.org/abs/2307.01258 as a pixell map.

kszx.act.download(dr, freq_list=None, night=False, cmb=True, ivar=True, beams=True)

Downloads ACT data products (cmb, ivar, beam) for a given survey.

Can be called from command line: python -m kszx download_act.