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GAIA DATA RELEASE DOCUMENTATION
Gaia Data Release 2 Documentation release 1.1
  • Gaia Data Release 2 Documentation release 1.1
    • I Introduction to Gaia DR2
    • II Gaia data processing
      • 2 Astrometric and photometric pre-processing
      • 3 Astrometry
        • 3.1 Introduction
        • 3.2 Properties of the input data
        • 3.3 Calibration models
        • 3.4 Processing steps
          • 3.4.1 AGIS pre-processing
          • 3.4.2 Primary source processing (AGIS)
          • 3.4.3 Secondary source processing
          • 3.4.4 AGIS post-processing
          • 3.4.5 Iteration strategy and convergence
          • 3.4.6 AGIS-PhotPipe-IDU loop processing
          • 3.4.7 Cross-match for the ICRS frame
        • 3.5 Quality assessment and validation
      • 4 Solar-System Objects
      • 5 Photometry
      • 6 Spectroscopy
    • III Gaia data analysis
    • IV Gaia catalogue
    • V Gaia archive
    • Miscellaneous
    • Bibliography
3.4 Processing steps3.4.3 Secondary source processing3.4.5 Iteration strategy and convergence

3.4.4 AGIS post-processing

Author(s): Jose Hernandez

The AGIS post-processing takes care of reformatting the data to put it in the format of the Gaia MDB, this basically means reducing the number of fields provided (as some of them are not needed by the consumers of the data) formatting some fields differently and converting the times used in the Attitude and Calibration blocks from the TCB scale to OBMT.

3.4.3 Secondary source processing Bibliography  3.4.5 Iteration strategy and convergence
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