PSP IS☉IS EPI-Hi LET1: Solar Energetic Particle Rates, 5-Minute Data

NASA's Parker Solar Probe (PSP) collected this Level 2 dataset of energetic particle rates from the Integrated Science Investigation of the Sun (IS☉IS) instrument suite. The data from the EPI-Hi Low Energy Telescope 1 (LET1) provides 5-minute averaged measurements, with calibration ongoing throughout the mission. The dataset is produced by the IS☉IS Science Team at Princeton University and was last updated in March 2026.

Use Cases

• Modeling solar energetic particle fluxes based on the 5-minute rate data.
• Analyzing particle pitch angle distributions based on the described use of magnetic field data.
• Studying temporal variations in the near-Sun particle environment mentioned in the calibration notes.
• Correlating particle events with other Parker Solar Probe instrument measurements.

Strengths

• Data is from the NASA Parker Solar Probe mission, a dedicated solar observatory.
• Calibration is described as ongoing, suggesting iterative data quality improvements.
• Includes pitch angle calculations enabled by magnetic field data from the PSP FIELDS team.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data files are in BIN, PDF, and HTML formats, which may require specialized tools for analysis.

Provenance

Source

National Aeronautics and Space Administration, Parker Solar Probe IS☉IS Science Team.

Collection Method

Collected by the Energetic Particle Instrument-Hi (EPI-Hi) Low Energy Telescope 1 (LET1) aboard the Parker Solar Probe spacecraft.

Time Range

Covers the ongoing Parker Solar Probe mission timeline.

Freshness

Last updated 2026-03 13 07:59:23.286838; freshness should be verified.

Geography

Data collected in the heliosphere, specifically the near-Sun environment traversed by the Parker Solar Probe.