RO-X-ROSINA-2-EAR3

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 background 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 Version 2.0 of the data set contains significant corrections to data and label parameters from the previous V1.0 version. Some data file names have changed as a result of specific corrections to START_TIME. See the MODIFICATION_HISTORY.ASC file in the documentation for this data set for a list of specific errors corrected. 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 outgassing 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 truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]