Mission name: SET

Instrument: CREDANCE

PI/Provider name: Keith Ryden and Alex Hands

Institute: University of Surrey, United Kingdom 

Contact info: k.ryden@surrey.ac.uk

Data format: netCDF

Data description (including how measurements were made):

CREDANCE has three sets of sensors: SURF (consistent of three charge collecting plates), proton and ion telescopes and two RADFETs under different shielding levels.  In Normal mode, data will be collected routinely from the sensors at the sampling interval selected (either default or commanded). The default-sampling interval is 300s. During a measurement cycle CREDANCE samples all the available sensors (as well as certain internal housekeeping data) and assembles telemetry frames in memory. CREDANCE may be powered off at any time but it will lose any stored data that has not yet been transferred to the OBC. When power is removed, CREDANCE will not collect internal electron currents (SURF), proton or ion data and the computer and the clock will reset. However the total dose monitors will continue to correctly monitor accumulated total dose.

Level 1 data include current measurements from the SURF instrument, coincidence and non-coincidence counts from the proton telescope and coincidence and non-coincidence counts from the ion telescope.  Level 2 data include current density measurements from the SURF instrument, omnidirectional proton flux derived from the proton telescope and cumulative dose from the two RADFETs.  

Time resolution/cadence: 5 minutes

Acknowledgement: The Cosmic Radiation Environment Dosimetry and Charging Experiment (CREDANCE) was designed, fabricated and calibrated by QinetiQ, United Kingdom.