The Data Handbook contains documentation on the data format, data processing, and data access developed by the Roman Science Operations Center (SOC) at STScI. Information related to the Wide Field Instrument (WFI) spectroscopic mode and high-level microlensing exoplanet science will be maintained by the Roman Science Support Center at IPAC. 

Data Handbook Table of Contents 

Below is a list of the articles in the Data Handbook that are currently published in RDox. 

• Introduction to WFI Imaging Data
• WFI Data Format
  • Introduction to ASDF
  • Coordinate Systems
  • Data Levels and Products
    • Associations
  • Skymap Tessellation
• Roman STScI Data Pipelines
  • Exposure Level Pipeline
  • Mosaic Level Pipeline
• Accessing WFI Data
  • CRDS for Reference Files
  • The Roman Archive in MAST
    • Cloud Access

The Data Documentation Ecosystem 

The software and resources described in RDox often have additional documentation users might find useful. These typically fall into several categories:

1. User guides presented here in this Data Handbook,
2. the external webpages and code repositories where the data or software are available, and
3. documentation written by the owners of the service and developers of the software.

Each of these forms of documentation provide insight into Roman data. The user guides in this Data Handbook are helpful for getting started with Roman data and utilizing it for science projects, the code repositories are helpful for anyone who needs to view the code or basic examples, and the developer documentation has the most up-to-date explanation of installation instructions and specifics about all the available parameters and other code details. 

The Table of Roman Data Resources provides short descriptions and relevant links where available. 

Table of Roman Data Resources

Data Resource	Description	Roman User Guides	Website or Code Repository	Developer Documentation
Roman STScI Data Pipelines	Main data reduction and calibration software pipeline developed by the Roman Science Operation Center for the WFI imaging data	Roman STScI Data Pipelines	romancal on GitHub	Roman Space Telescope Calibration Pipeline on Readthedocs
Barbara A. Mikulski Archive for Space Telescopes (MAST)	Archive containing all available Roman data, both for the WFI and the Coronograph	The Roman Archive in MAST	Roman Overview and select Ground-Test data in MAST Roman access for MAST in development	Not Applicable
Calibration Reference Data System (CRDS)	System containing all the reference files that work with the STScI Roman Pipelines - version controlled	CRDS for Reference Files	Roman CRDS Website	Roman CRDS Users Guide
Roman Science Platform	Cloud-based environment to facilitate access and analysis of Roman data	Not yet released in RDox	In development	In development

For additional questions not answered in this article, please contact the Roman Help Desk at STScI.