Required Reading : The format of all Alice data are described in detail by the EAICD document located in the /DOCUMENT directory. In addition, the Rosetta Alice logbook file, RA_LOGBOOK_NNN.ASC, also located in the /DOCUMENT directory provides observational details such as observation target, commanded exposure time, etc., for all Alice data. The Alice team strongly recommends reading this documentation before using the data.   Data Set Overview : This data set contains unprocessed data acquired by the Rosetta Orbiter ALICE UV Spectrometer during the second cruise phase of the Rosetta mission, which occurred April 5, 2005 to July 28, 2006. Observations of comet 9/P Tempel 1, calibration targets and instrument checkouts were made during this mission phase. A detailed listing of all Alice observations is given in the observation log file located in the DOCUMENT directory.   Processing : The data in this data set are unprocessed, CODMAC Level 2 data. No calibration or data processing have been applied. In the Alice file nomenclature, this is noted by the 'ENG' in the filename.   Data : The data are in FITS format and text format. Each FITS file has a detached PDS label so that they can be read either by FITS or PDS tools. A detailed description of the data format is given in the ALICE EAICD document located in the DOCUMENT directory of this data set.   Ancillary Data : No ancillary data included in this data set.   Coordinate System : There is no particular coordinate system associated with this data set.   Software : All FITS readers should be able to successfully read the data.

Confidence Level Overview : Data confidence is nominal, meaning that all data have been validated by the Alice team and found as expected. Any exceptions are noted by the DATA_QUALITY field in the label files.   Review : Rosetta internal archive review Jan 2006. Formal review process Jan 2007.   Data Coverage and Quality : Data quality is good unless otherwise noted by the DATA_QUALITY keyword.   Limitations : These data are raw and unprocessed and thus are not in physical units. The proper calibration procedures need to be applied before the data can be used for the vast majority of scientific purposes.