Hi @nsevilla, thanks for this question.
In short – yes the PSF models are “bundled up in files per patch”, or in other words, can be accessed as a property of the calexp or deepCoadd images that are retrieved via the butler. Also yes, this image meta data does exist in the current DP0.2 release (although not exactly as a separate file).
One of the best resources for learning about PSF models with the DP0.2 data set are the two DP0.2 Jupyter notebook tutorials on the PSF data products:
- 12a. PSF Data Products: A demonstration of how to access calexp and deepCoadd PSF properties.
- 12b. PSF Science Demo: Demonstration of the use of measured PSF properties in weak lensing analysis.
Perhaps you’re already aware but, just in case anyone else reading this is not: executable versions of the DP0.2 tutorial notebooks can be found in all RSP users’ home directories, in the notebooks/tutorial-notebooks/ folder. Alternatively, rendered versions can be browsed in the DP0.2 documentation.
If that answers your question please mark this reply post as the solution, thank you!