TA-crossinst

code to test TA algorithms and procedures for the JWST instruments

This repository contains:

• jwst_ta.py: a set of functions for centroid calculation using the same method as GENTALOCATE. the code was adapted from an idl code written by P. Goudfrooij for NIRISS
• miri_test.py: a script that shows the calling sequence, used with MIRI data and parameters. can be used for testing.
• nircam_test.py: as above, for NIRCam.

Setup:

• Clone the repository to a local folder using git clone https://github.com/STScI-MIRI/TA-crossinst.git
• If necessary, activate the appropriate conda environment.
• cd to the folder where you cloned the repository and run pip install . (or pip install -e . for editable installations).
• Import the code with from jwst_ta import jwst_ta

Status (May 10th 2018):

• Code returns the same result as the idl script on the MIRI test data

• Code supports:

  • different checkbox and centroid window sizing
  • using full array or custom-sized region of interest for calculation
  • background subtraction: fractional or absolute value.
  • flat fielding
  • creating a TA image from a ramp or ingesting a pre-made TA image
  • creating a TA image from a custom list of group indices (and calculation of the scale factor)

• Not yet implemented:

  • random offset of target within ROI

Contributors:

• Bryan Hilbert
• Sarah Kendrew
• Jonathan Aguilar

Comments and contriutions welcome. Please use Issues and Pull requests.