Photometric noise model (dataval.noise_model)

Noise model as a function of magnitude and position

Code author: Rasmus Handberg <rasmush@phys.au.dk>

dataval.noise_model.Pixinaperture(Tmag, cad=1800)

Number of pixels in aperture as a function of Tmag

Code author: Mikkel N. Lund <mikkelnl@phys.au.dk>

dataval.noise_model.ZLnoise(gal_lat)

RMS noise from Zodiacal background.

Code author: Mikkel N. Lund <mikkelnl@phys.au.dk>

dataval.noise_model.phot_noise(Tmag, timescale=3600, coord=None, sysnoise=60, Teff=5775, cadpix=1800)

Photometric noise model in ppm/timescale.

Parameters:

• Tmag (ndarray or float) – TESS magnitudes to calculate noise model for.

• timescale (float) – Timescale of noise model in seconds. Defaults to 3600 (1 hour).

• coord (SkyCoord or dict, optional) – Sky coordinate used for zodiacal noise. Defaults to RA=0, DEC=0.

• sysnoise (float, optional) – Systematic noise contribution in ppm/hr. Defaults to 60.

• Teff (float, optional) – Effective temperture. Defaults to 5775.

• cadpix (TYPE, optional) – Cadence where images are taken. Choices are 1800 and 120. Defaults to 1800.

Returns:

• ndarray: Total noise model as a function of TESS magnitide.

• ndarray: Individual noise components in 4 columns: Shot, Zodiacal, Read and Systematic.

Return type:

tuple

Raises:

ValueError – On invalid coord input.

Code author: Mikkel N. Lund <mikkelnl@phys.au.dk>

Code author: Rasmus Handberg <rasmush@phys.au.dk>