pynrc.simul.ngNRC.slope_to_level1b

pynrc.simul.ngNRC.slope_to_level1b(im_slope, obs_params, cal_obj=None, save_dir=None, cframe='sci', out_ADU=True, **kwargs)[source]

Simulate DMS HDUList from slope image

Requires input of obs_params input dictionary as generated from APT input files (see DMS_input class in apt.py).

Also, make sure the calib directory exists in PYNRC_PATH and is populated with detector calibration information.

Look at keyword args to exclude specific detector effects.

Output is saved to disk and will not be returned by the function.

Parameters

  • im_slope (ndarray) – Slope in e-/sec of image from all sky sources, including Zodiacal background. Should exclude dark current background, which is handled separately from calib directory.

  • obs_params (dict) – Dictionary of parameters to populate DMS header. See create_DMS_HDUList in dms.py.

  • cal_obj (pynrc.nircam_cal) – DMS object built from exported APT files. See DMS_input in apt.py.

  • save_dir (None or str) – Option to override output directory as specified in obs_params dictionary. If not specified as either a function keyword or in obs_params, then files are saved in current working directory.

  • cframe (str) – Coordinate frame of input slope, ‘sci’ or ‘det’.

Keyword Arguments

  • include_dark (bool) – Add dark current?

  • include_bias (bool) – Add detector bias?

  • include_ktc (bool) – Add kTC noise?

  • include_rn (bool) – Add readout noise per frame?

  • include_cpink (bool) – Add correlated 1/f noise to all amplifiers?

  • include_upink (bool) – Add uncorrelated 1/f noise to each amplifier?

  • include_acn (bool) – Add alternating column noise?

  • apply_ipc (bool) – Include interpixel capacitance?

  • apply_ppc (bool) – Apply post-pixel coupling to linear analog signal?

  • include_refoffsets (bool) – Include reference offests between amplifiers and odd/even columns?

  • include_refinst (bool) – Include reference/active pixel instabilities?

  • include_colnoise (bool) – Add in column noise per integration?

  • col_noise (ndarray or None) – Option to explicitly specify column noise distribution in order to shift by one for subsequent integrations

  • amp_crosstalk (bool) – Crosstalk between amplifiers?

  • add_crs (bool) – Add cosmic ray events? See Robberto et al 2010 (JWST-STScI-001928).

  • cr_model (str) – Cosmic ray model to use: ‘SUNMAX’, ‘SUNMIN’, or ‘FLARES’.

  • cr_scale (float) – Scale factor for probabilities.

  • latents (None) – Apply persistence.

  • apply_nonlinearity (bool) – Apply non-linearity?

  • random_nonlin (bool) – Add randomness to the linearity coefficients?

  • prog_bar (bool) – Show a progress bar for this ramp generation?