From Planck PLA Internal Wiki
The Planck Legacy Archive hosts several types of masks used during the processing and analysis of the Planck data.
These are the main categories of masks that can be found in the PLAPlanck Legacy Archive:
- [Galactic plane]
- [Point sources]
- [CMBCosmic Microwave background]
- [Angular Power Spectrum]
- [SZSunyaev-Zel'dovich Compton]