Missing Restituted Attitude file
ENVISAT attitude file provides pitch, roll, and yaw of the satellite, and is required in the processing to accurately define the geo-location of the measurements. SCIAMACHY Level 1b products for 08 April 2012 (seven products on the last day of SCIAMACHY operations, from orbits 52861 to 52867) have been generated without ENVISAT Restituted Attitude auxiliary file as the last in-flight AUX_FRA_AX file generated does not supply suitable coverage for that day. When the AUX_FRA_AX information is missing, SCIAMACHY Level 1b products use attitude previsions and present a slightly reduced quality in the pointing.
Products affected are the following: