Data set Overview
      =================
      On March, 2, 2004, the Rosetta spacecraft was launched towards
      comet 67P/Churyumov Gerasimenko. Since then the ROSNA sensor has
      been tested and optimized for flight during several
      commissioning slots. All data so far from DFMS and RTOF concern
      either the in flight calibration gas or back-ground outgassing
      from Rosetta.Because of several uploads of new voltage settings
      the data cannot be compared between the different commissioning
      slots, neither in intensity nor in mass scale! The data can be
      used only for engineering purposes. The only data which can be
      used to evaluate the background pressure of Rosetta are the COPS
      data. Scientific data from DFMS and RTOF will only be available
      when Rosetta reaches the first
      asteroid.
      The explanation of the generated data of the ROSINA sensors
      can be found in the OPERATION_LOGBOOK.ASC
 
      Parameters
      ==========
      DFMS and RTOF data contain neutral gas data as well as ion data.
      The data are raw, uncalibrated data. COPS contain pressure data
      of the background pressure and of some thruster firings from the
      nude gauge.
 
      Calibration
      ===========
      COPS data are calibrated. However, the calibration factor has
      been determined for Nitrogen gas, and may not be appropriate for
      the outgas-sing of Rosetta. Because the main outgassing
      component is unknown the correct factor to be used is also
      unknown.
      DFMS and RTOF data are uncalibrated and will remain uncalibrated
      because they have no scientific value.
 
      Processing
      ==========
      No processing was applied to the data.
 
      Coordinate Systems
      ==================
      No coordinate is specified for the data.
 
      Software
      ========
      No software is provided.
 
      Media/Format
      ============
      The standard distribution format for the data is an electronic
      volume.

Confidence Level Overview
      =========================
      N/A