2.7.1 https://spdx.org/licenses/ SPDX https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/NumericalData/PADRE/MeDDEA/Level0/Spectrum/FITS NASA NumericalData PADRE MeDDEA Level0 Spectrum FITS PADRE/MeDDEA Level0 Spectrum FITS MeDDEA Level0 Spectrum FITS 2026-06-26T13:25:35Z 2026-06-01T00:08:46 Only known prior ReleaseDate of the metadata 2026-06-26T13:25:35Z Add 'Z' to PublicationDate. Added ResourceType and NamingAuthority. Added MetadataRightsList. ZCB 2026-07-21T00:08:46Z Added Parameter descriptions for the SPEC and PKT FITS extensions. SY. PADRE MeDDEA Level0 Spectrum FITS data are uncalibrated hard X-ray spectrum data obtained by the Measuring Directivity to Determine Electron Anisotropy (MeDDEA) instrument on the Solar Polarization and Directivity X-Ray Experiment (PADRE) CubeSat observatory. The Level0 spectrum files contain the same spectrum data as the raw MeDDEA binary data, but converted to FITS format for more convenient analysis. Each raw spectrum data file generates a single Level0 spectrum FITS file. The spectrum product is provided regularly and contains summary spectra created for detector pixels at regular cadence, normally every 10 seconds, with 512 energy bins. These data support investigations of the directivity of solar flare hard X-ray emission and the angular distribution of flare-accelerated electrons. The PADRE MeDDEA Team: NASA Goddard Space Flight Center (USA); Space Sciences Laboratory, University of California Berkeley (USA); Southwest Research Institute (USA); University of Applied Sciences and Arts Northwestern Switzerland (Switzerland); CEA-Saclay (France) 2025-11-24T00:00:00Z NASA Goddard Space Flight Center, Solar Data Analysis Center (SDAC) spase://SMWG/Person/Steven.Christe PrincipalInvestigator PADRE MeDDEA Data Documentation https://padre-meddea.readthedocs.io/en/latest/user-guide/data.html Documentation describing MeDDEA data products, data levels, file naming conventions, and reading software. PADRE MeDDEA Level 0 Data Documentation https://padre-meddea.readthedocs.io/en/latest/user-guide/level0.html Documentation describing the organization of PADRE MeDDEA Level 0 FITS files, including photon, spectrum, and housekeeping files. spase://SMWG/Repository/SDAC Online Open https://spdx.org/licenses/ SPDX https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products. NASA/GSFC/SDAC PADRE MeDDEA Level 0 Spectrum FITS https://umbra.nascom.nasa.gov/padre/padre-meddea/l0/spectrum/ Directory listing for PADRE MeDDEA Level 0 spectrum FITS data at NASA/GSFC/SDAC. FITS Uncalibrated spase://SMWG/Instrument/PADRE/MeDDEA Spectrum 2025-06-23T00:00:00Z -P1M HardXRays Sun Sun.Chromosphere Sun.Corona Photon Spectrum Data, FITS Extension 1 SPEC FITS extension 1, named SPEC, contains the Level 0 photon spectrum data as a compressed three-dimensional image array. The first dimension contains 512 uncalibrated spectral channels, the second dimension contains 24 detector pixels, and the third dimension contains successive spectra acquired during the time interval covered by the file. Photon Intensity Spectrum Packet Data, FITS Extension 2 PKT FITS extension 2, named PKT, is a binary table containing packet-level information associated with the spectra in FITS extension 1. Each row provides the packet time, packet subsecond clock, ASIC identifiers and electronic channel numbers for the 24 detector pixels, and packet sequence number. Its columns are pkttimes, pktclock, asic, channel, and seqcount. Other