...
You can see that it has a model of "HypatiaFtkItem" and has an "is_member_of" relationship to hypatia:165, which is a HypatiaDiskImageItem.
FileAsset for HypatiaFtkItem
This contains the file "BURCH2" in the content datastream, plus an HTML display derivative (so you don't have to have a copy of WordPerfect 4.2 in order to read the file's content) in the "derivative_html" datastream. 
HypatiaDiskImageItem
This represents the FTK generated and analyzed disk image for a 5.25 inch floppy disk known as CM005. Collections that have undergone disk image level analysis but not file level analysis are referred to locally as "unprocessed collections," but it is worth noting that processed collections, like the Gould collection, still have disk level data objects.
...
A HypatiaDiskImageItem has a payload file that we store in the "content" datastream of a FileAsset object. However, it also has several other files. Here you can see a datastream called "front" that contains a photo of the disk in question. If the back of the disk had also been photographed, there would also be a datastream called "back." I'm also planning to put the .csv and .txt files that FTK generates as datastreams here. That seems more appropriate (and easier) to me than handling them as separate FileAssets, but we may want to re-examine this in later phases of the project.
