FDR Files are generated in case of a component crash and they are records of system and server component behavior at run time. In the event of a system or server component failure, the settings and events leading up to the failure are captured and logged.
This will convert .fdr to .csv:
/home/perfuser/siebel/siebsrvr/bin/sarmanalyzer - filename-you-want
.csv -x -f name-of-the-FDR-file.fdr