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Thread about files and the directory structure

The pipeline processing of the Swift Data is performed at the Swift Data Center (SDC) at the Goddard Space Flight Center (GSFC). Data received from the spacecraft, via telemetry dumps to the ground station - Level 0 files - are used to create FITS files containing image and event data from from the 3 instruments. These files are then sent through the pipeline, which leads to the formation of calibrated images and cleaned event lists.

File naming convention

Data downloaded from the US Quick Look site will be automatically saved under a main directory with a name of the form sw[obsid].[segid]. For example, sw00374210000.008 would be a typical name for the master directory. If the data are obtained from the UK Quick Look site, then the name will be simply the Observation ID (00374210000 in the above example).

The version number - 008 in this example - indicates how many times the data have been through the pipeline. A brief overview of the Swift file naming convention is given here.