DAWN GRAND RAW (EDR): Gamma Ray and Neutron Counts from the MARS Flyby

A time-ordered collection of 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, needed for analysis. It is an intermediate data product derived from raw data records using reversible operations, from which all higher-order products are derived.

Use Cases

• Analyzing planetary surface composition based on gamma ray and neutron counting data.
• Monitoring instrument health and performance based on temperature and voltage state-of-health data.
• Developing or validating higher-order data products derived from the described EDR pipeline.

Strengths

• Data covers all phases of the Dawn mission, providing a complete mission record.
• Includes state-of-health data (temperature, voltage) necessary for rigorous scientific analysis of the counting data.
• Processed via an automated pipeline from raw data records, ensuring consistency.

Limitations

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

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Acquired by the GRaND (Gamma Ray and Neutron Detector) instrument on the Dawn spacecraft.

Time Range

Covers all phases of the Dawn mission.

Freshness

Last updated 2026-03-13 15:44:19.168126; freshness should be verified.

Geography

Mars flyby and other mission phases.