The calibration data in the PDS is the latest version. CAPS has discussed updated calibration data, but the team has not reached a consensus on revised values. Updated information in the PDS archived files will probably be available in spring 2007.
CDA does not have calibration files in its products, but rather tries to provide calibrated data (and with a warning on the data, as they are still working on producing the best values).
CIRS archives the best data (both calibrated and raw) that are currently available for each 3-month period, at the time of submission. However, the calibration algorithm is always being refined.When changes are made, the algorithm is back-propagated and re-run over all existing data. That means that data being archived now uses a different algorithm than a year ago, and also, different versions of the early tour data within CIRS are being used than the versions that are archived.
It is not feasible at this point to keep re-archiving all PDS data to date every time a change is made to the algorithm. There is a long-term objective to make a 'grand resubmission' towards the end of the mission and update everything in one fell swoop.
The best calibration data were delivered with the initial PDS delivery. Since July, a laboratory calibration of the INMS refurbished engineering model has been under way in hopes of improving the knowledge of the instrument sensitivity and adding additional species to the calibration data set. Once the team agrees to adopt new values, the calibration summary file containing this information will be delivered to the PPI node.
The most recent files have been delivered.
The Cassini Magnetometer Archive does have an out-of-date calibration file however this is because the team has had difficulty finding acceptable calibration parameters for the data contained in the past few archive deliveries. Work in this area is ongoing and slow progress is being made. Elmain Martinez and Joe Mafi have been apprised of the status. Once new ones are available they will be submitted.
Currently the MIMI team is in process of revising the calibration data for MIMI. The process has not finished going through all channels but is expected to be completed by the end of the next team meeting in December 2006. After all of the calibration numbers are approved a new calibration file will be uploaded to PDS.
Currently what is filed with PDS is the originally derived calibration data files.
The best calibrations available at the time are included with each archive delivery. In the calib directory are the beam pattern files. Specific calibration constants are in the config files that are also included.
Notice the proviso in the above, "at the time". RADAR continues to refine calibration of the radar, so different deliveries may have different calibration values. Reprocessing all the data in a more uniform way is planned for around June-July.
The RPWS calibration files in PDS are the best we have.
The best HGA Boresight Calibration Report and USO Characterization Report are included with the RSS PDS deliveries. With regard to the HGA Pattern Report, it has not been released yet because more data analysis is required. It will be released as soon as it becomes available.
UVIS is in the process of updating the time history of our instrument sensitivity and the recommended procedures for flat-fielding. Updated memos and directions for PDS users will follow in January.
VIMS delivers the calibration software on every volume. Calibrated cubes are also included as example data on each volume.