The HFI DPC

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The data is processed in two main steps:

• L1: which consists in receiving the telemetry and ancillary data files and ingesting them into the DPC database. This involves decompressing, in some cases changing data formats, computing the time of individual data samples from the time of the compression slices, but otherwise no processing proper.
• L2: this is where the data are processed. The main processing steps are
  • TOI processing, which includes conversion from ADUs to engineering units (Volts), demodulation, deglitching, conversion from engineering to physical units (Watts), removal of known systematic effects (non-linearities, 4K lines, Jumps, ring flagging), removal of the instrumental signature (time transfer function)
  • map-making: projecting the TOIs onto all-sky maps, etc. etc,

Selected Systematic Effects:

• Glitches: See the papers. More information can be found here.