RO-A-RPCIES-2-AST1

Data Set Overview The following describes the nature of instrument operation during the various periods for which IES data are available in this submission. In all cases the data are raw electron and ion counts as function of energy, azimuth (direction in the instrument symmetry plane) and ^ation (angle above or below the symmetry plane). This data set includes data obtained by IES during the period 11 July 2008 to 6 September 2008 (referred to as the Steins flyby period by ESA for reference although instrument operation was not continuous during this period). The period between 5 July and 1 August 2008 encompassed the active checkout PC8. Several tests were performed on IES and although the spacecraft was in the solar wind during this period IES was able to see the solar wind only briefly because of the spacecraft attitude. The actual flyby of asteroid Steins occurred at 2038 UT spacecraft time on 5 September 2008. IES apparently saw no signature of the asteroid nor did it see the solar wind (except very briefly during the spacecraft flip at about 1840 UT on 5 September 2008). Processing All Rosetta Plasma Consortium (RPC) data packets are transmitted together during downlinks with Rosetta. RPC data are retrieved from the Data Distribution System (DDS) at European Space Operations Centre (ESOC) to a central RPC data server at Imperial College London. Data for IES is copied from the RPC central data server by IESGS at Southwest Research Institute. The pipeline processing software is the IES Ground System (IESGS). IESGS extracts IES CCSDS packets from the RPC collective data files stored on the RPC central data server at Imperial College. These packets are used to build ion and electron data products. The data products are grouped by date and written out to PDS compliant archive data files. One data file is created for each day. IESGS also generates the labels for the archive data files. I truncated!, Please see act [truncated!, Please see actual data for full text]