This file describes the content and usage of the ACTIVITY.TAB file provided 
within this dataset.
The ACTIVITY.TAB file provides information concerning the operational 
context and scientific rationale behind each observation, geometry and data 
quality. The ACTIVITY.TAB aggregates information of all images within one 
processing level. 

Image name and dataset ID are provided in columns: 
    PRODUCT_ID
    DATA_SET_ID

Information concerning the operational context and scientific rationale 
behind each observation is provided in columns: 
    ROSETTA:RATIONALE_DESC 
    ROSETTA:OPERATIONAL_ACTIVITY 
    ROSETTA:ACTIVITY_NAME.
Detailed description of those keywords can be found in the
SCIENCE_USER_GUIDE_V??.PDF, provided with each dataset in the 
DOCUMENT/SCIENCE_USER_GUIDE directory. 

Start and end time of each exposure are provided in columns:
    START_TIME
    STOP_TIME

The object targeted in each observation can be found in column:
    TARGET_NAME

Information about the geometry of the observation is provided in columns:
    SPACECRAFT_COMET_DISTANCE
    COMET_SUN_DISTANCE
These two keywords are not included in the image headers. For images with 
TARGET_NAME = "67P/CHURYUMOV-GERASIMENKO 1 (1969 R1)", 
SPACECRAFT_COMET_DISTANCE is equivalent to the header keyword 
TARGET_CENTER_DISTANCE, described in the OSIRIS_SIS_V??.PDF. 

Information concerning the quality of the data is provided in column:
    DATA_QUALITY_ID.
Detailed description of this keyword can be found in the OSIRIS_SIS_V??.PDF, 
provided with each dataset in the DOCUMENT/SIS directory.