Status of the CHAMP ME Data Processing

The routine processing of the CHAMP data has started in May 2001. Since then calibrated data, (science quality) Level-2 products, are made available to the community through our data centre ISDC. The gained experience with the behaviour of the instruments prompted some small adjustments of the processing codes. Also feedbacks from the users were considered when appropriate. Here we will report on the availability and quality of the data on an instrument-by-instrument base. Within the Magnetic and Electric field (ME) group we process the scalar and vector magnetic field data, evaluate the star camera readings and the ion drift-meter measurements. For a complete cross-calibration between the scalar and vector magnetometers two dedicated attitude manoeuvres have been performed. A modified processing of the star camera readings has reduced the attitude noise during periods of single head solutions. As a rather recent product, we make the local electron density available. It is planned to estimate also the electron temperature. Both quantities are derived from the Planar Langmuir Probe.