DAWN GRaND: Gamma Ray and Neutron Counts from the Dawn Mission

Gamma ray and neutron counting data and histograms acquired by the GRaND instrument during all phases of the Dawn mission. The dataset includes state-of-health data, such as temperature and voltage readings, and is an intermediate data product derived from raw data records using reversible operations. It was produced by the National Aeronautics and Space Administration and last updated in March 2026.

Use Cases

• Analyzing elemental composition of celestial bodies based on gamma ray and neutron spectra
• Monitoring spacecraft instrument health based on temperature and voltage readings
• Validating higher-order data products based on the intermediate data records
• Studying temporal variations in radiation counts based on time-ordered collection

Strengths

• Data covers all phases of the Dawn mission, providing a complete mission record
• Includes state-of-health data needed for analysis of the counting data
• An automated pipeline is used to process the data from raw records

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Acquired by the GRaND instrument on the Dawn spacecraft and processed via an automated pipeline from raw data records.

Time Range

Covers all phases of the Dawn mission.

Freshness

Last updated 2026-03-13 15:36:26.468277