Created by: Kevin Volk, Gabriel Brammer, Deepashri Thatte, Joseph Filippazzo & Jason Rowe
The following data consist of simulations of four observing configurations of the JWST Near-Infrared Imager and Slitless Spectrograph (NIRISS) instrument:
Aperture-Masking Interferometry (AMI)
Wide-Field Slitless Spectroscopy (WFSS)
Single-Object Slitless Spectroscopy (SOSS)
The simulations are summarized below.
For details, see the extensive description of the NIRISS_Data_Simulations from the team, and the even more detailed description of the WFSS simulations in the README file.
The simulations include the following effects:
Detector noise, bad pixels, and bias drift
Spectral traces and spectral dispersions as measured in ground testing
The expected sensitivities of the various NIRISS modes
Note that detector non-linearity is not simulated.
All simulations adopt NISRAPID read-out (NB: each frame constitutes a separate group in the integration).
Detector characteristics match what was measured in ground-testing.
The following instrument configurations and targets were simulated:
Observing Configurations & Operating Modes
4-point dither within the PHAT survey of M31
Binary star, and a star + exoplanet system
4-point dither of the GOODS-S field
Planet host GJ 436 (aka Ross 905)
Use the links in the following tables to download the files of interest.
The contents of the *_uncal files contain data as processed to Level-1b (i.e., assembled image, ready to be calibrated), including associated metadata.
The contents of the *_rate and *_rateints files contain data as processed to Level-2a (i.e., countrate or countrate per integration images, respectively, derived from ramps and ready for instrument signature removal).
 The format and organization of the raw data and metadata in the FITS files is the same as that expected for Level-1b products (ca. 2017 Mar). Thus, these files could be run through the JWST pipeline.