DatesObs

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The DATESOBS files are not official Planck products but are provided for the convenience of the community. They contain timing information sampled by UTC day for investigation of inter-survey source variability and comparison with external observations.

There are 27 files for all combinations of instrument band and survey. The files themselves are:

  • FITS format, with data in the first extension
  • RING-ordered HEALPIX
  • NSIDE 1024 for LFI, and 2048 for HFI

They contain two fields:

  • DATESOBS - list of UTC days on which the pixel was observed.
  • NUMOBS - The number of UTC days on which the pixel was observed.

Universal Time Coordinate(d)

Flexible Image Transfer Specification

(Planck) Low Frequency Instrument

(Planck) High Frequency Instrument

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