Recipe Templates

Template recipes are provided for most common data processing tasks, including analyses of calibration data and science data. In many cases, to reduce your data you just need to select the relevant FITS files and choose which template recipe should be applied (or, for common tasks, the Data Parser may automatically select the right template for you).

For convenience, template recipes are divided into several different reduction types:

• Spectral Science
• Polarimetry Science
• Calibration
• Testing

These different types simply provide a convenient way of restricting which subset of templates are displayed on screen to choose from, based on the recipes that are most likely to be of use for the data at hand. [1] Also, when editing a given recipe, the list of available primitives is optionally filtered to only display primitives appropriate for the current type of recipe. This is mostly just a convenience to keep spectral and polarimetry primitives from cluttering the interface unnecessarily when not in use.

Spectral Science Mode Template Recipes

Quicklook Automatic Datacube Extraction is used for real-time reductions while operating the instrument. It produces decent quality datacubes without doing the full calibration process

Create Clean 2D Detector Image cleans up detector artifacts (dark subtraction, bad pixel repair, etc) but stops before making a datacube

Simple Datacube Extraction Currently identical to the Quicklook Automatic Datacube Extraction, but future versions will include a flexure corretion, a more thorough noise detector noise reduction, improved extraction algorithm, and a persistence correction

Calibrated Datacube Extraction Aimed at performing a science-grade, flux-calibrated, WCS included, data reduction.

Contrast Measurement Used to obtain a contrast measurement and evaluate AO performance. This same calculation can also be performed using GPItv

Simple Extraction, ADI+SSDI reduction Performs simple reduction and an ADI+SSDI reduction. This recipe requires testing with on-sky data before being ready for regular use.

Simple Extraction, ADI+LOCI reduction Performs simple reduction and an ADI+LOCI reduction. This recipe requires testing with on-sky data before being ready for regular use.

Rotate and combine extended object For a simple extraction and ADI reduction of extended objects

Polarimetry Science Mode Template Recipes

Quicklook Automatic Polarimetry Extraction is used for real-time reductions while operating the instrument. It produces decent quality datacubes without doing the full calibration process

Simple Polarization Datacube Extraction Performs similar extraction to the Quicklook extraction but future versions will include a flexure corretion, a more thorough noise detector noise reduction, improved extraction algorithm, and a persistence correction

Basic Polarization Sequence performs a basic reduction and computes the Muller matrix, rotates the image such that north is pointed up.

Calibration Data Template Recipes

Calibration Recipes are discussed in more detail in the Step-by-Step guide to processing data sections.

Software Testing Template Recipes

This is a section for template recipes that are used in testing and debugging the pipeline itself. There are several recipes of this type. Don’t try to use these for science reductions directly.

Footnotes

[1]	But that said, there is nothing stopping you from choosing to apply a Calibration type template to your science data, or vice versa, if for some reason you wish to do so.