Defect Reports are a new thing Ebay introduced as part of their 2014 Spring Seller update.
The report format can be tough to view in it’s native format (a text-based .csv file).
I created a web based viewer to feed your report into and get a much better sense of what’s what. Lots of folks from all over the world have used the tool & found it helpful. If you’re a seller maybe you will too!
Here’s a link to it: http://thinkspring.net/tools/ebay/defect_report_viewer/
Also, a video on how to use the tool: