PDS Asteroid/Dust Archive
Dawn at Ceres - GRaND
Raw Data (Level 1a)
The GRaND L1a are a time-ordered collection of gamma ray
and neutron counting data and histograms acquired by GRaND during all phases
of the Dawn mission. The dataset includes state-of-health data, such
as temperature and voltage readings, needed for the analysis of the counting
data. This data set covers the entire Ceres encounter through
Extended Mission XM04 (Opposition orbit).
Calibrated Data (Level 1b)
The GRaND Reduced Data Records (RDR) contain a time
series of calibrated spectra, counting data, and ephemeris, pointing,
and geometry (EPG) data. The data set includes all L1b for the entire Ceres
encounter through XMO4 (Opposition orbit).
Level 2 Map Products
This data set contains the Dawn Ceres high level map products including
Water Equivalent Hydrogen (WEH) Map, Smoothed Water Equivalent Hydrogen
(WEH) Map, Thermal & Epithermal Neutron Counts Map, Iron Concentration Map,
and Iron Gamma Counts Map. These maps have been generated from the
GRaND L1B data taken during the Ceres Low Altitude Mapping Orbit phase of
the Dawn mission.