ROSETTA-ORBITER CHECK GIADA 2 CR4B CRUISE4B V1.0

Payload Checkout 9 (PC9) was the 7th Passive Payload checkout conducted during the Rosetta spacecraft's Cruise Phase. The main objective of passive payload checkouts is to verify the health of the Rosetta payload through the execution of nominal payload 'healthcheck' type operation. The Passive Payload Checkout 9 executed 28th January and 2nd February 2009. The GIADA passive test (GD01 in ESA document) includes standard procedures and full functional verification and was executed by switching on Main and Redundant I/Fs in sequence and executing similar procedures for the two cases. The data reported in this data set have been converted from ADC counts to engineering values. The quality of the Housekeeping and Calibration data is good. Scientific data are due to noise, as no grain event is expected during this mission phase. These data must be only considered to evaluate GIADA behaviour and not as real scientific data. Data reported by GDS and IS are due to noise as no dust event is expected during this mission phase. MBS frequency changes, once normalised for frequency vs. temperature dependence, if present, are due to deposition of contaminants existing in the S/C environment. Housekeeping and Calibration data from all GIADA sub-systems are useful to evaluate instrument health and behaviour when compared with similar data acquired during other mission phases.