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This is the Explanatory Supplement accompanying the 1st public release of Planck data.

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Explanatory supplement

By Planck Collaboration

The Explanatory Supplement is a reference text to the public data delivered from the operations of the European Space Agency’s Planck satellite during its mission.

Summary

1. The Planck mission
2. The satellite
   1. HFI design, qualification, and performance
      1. Cryogenics
      2. Cold optics
      3. Detection chain
      4. Operations
      5. Performance summary
      6. Annexes
   2. LFI design, qualification, and performance
      1. Instrument description
      2. Ground tests
      3. In-flight calibration
      4. Performance summary
      5. Systematic effects
      6. The Sorption Cooler
      7. Annexes
3. Ground Segment and Operations
   1. Operational history
   2. Survey scanning and performance
   3. Thermal environment
   4. Radiation environment
   5. Pointing performance
   6. Data flow overview
   7. MOC data transfer and storage
4. Data processing
   1. HFI Data Processing
      1. Pre-processing
      2. TOI processing
      3. Detector pointing
      4. Beams
      5. Map-making
      6. Spectral response
      7. Internal overall validation
      8. Power spectra
      9. Summary of HFI data characteristics
   2. LFI data processing
      1. Pre-processing
      2. TOI processing
      3. Detector Pointing
      4. Beams
      5. Map-making
      6. Systematic effects uncertainties
      7. Internal overall validation
      8. Power spectra
      9. Summary of LFI data characteristics
   3. HFI/LFI joint data processing
      1. Compact Source catalogues
      2. Astrophysical component separation
5. Mission products
   1. Time ordered data
   2. Sky temperature maps
   3. The instrument model
   4. Effective beams
   5. Catalogues: PCCS • SZ • ERCSC
   6. Sky temperature power spectra
   7. CMB and astrophysical component maps
   8. CMB spectrum and likelihood code
   9. Cosmological parameters
   10. Additional maps: Lensing map
   11. Scientific data used to generate Planck products
   12. Simulation data
   13. Dates of observations
6. Software utilities
   1. Unit conversion and Color correction
7. Survey and satellite data
   1. Survey history data
   2. Satellite history data
   3. Radiation environment data
8. Appendix
9. Glossary
10. List of acronyms