High Rate Detector data sets are archived by the PDS Small Bodies Node at their 
Dust Subnode at the Planetary Science Institute in Tucson, Arizona.
No user's guide was produced -- see 
Software Specifications Document (SIS)  for interpreting the data
Additional information can be found in the CDA 
User's guide 
HRD Data Products
Online Access
Other Useful Products and Other Resources for Interpreting the Data
See the 
Master Schedule for a time ordered listing of observations by all instruments.
HRD observations are included in CDA observations.
SPICE - Archived Cassini SPICE ancillary data providing observation geometry (positions, orientations, instrument pointing, time conversions and the like) are available from the PDS 
NAIF Node.
Publications - A listing of team members to facilitate literature searches.