THEMIS SOCScience Data Products − 1March 29, 2006 Science Data Products Timothy Quinn

THEMIS SOCScience Data Products − 2March 29, 2006 Probe Level 0 (L0) Data File The L0 data files will:  Contain single AppID packet type  Cover a 24 hour period  Be time ordered  Have overlap deleted  Remain compressed  Contain a 1024 byte ancillary data header

THEMIS SOCScience Data Products − 3March 29, 2006 Probe Level 0 (L0) Data File Header (1024x8 ) Packet (Nx8) Packet (Nx8) Packet (Nx8) Packet (Nx8) Packet (Nx8) 1024 Byte File Header: Bytes 0-19: A 20-byte identifier (could be ASCII) which denotes this as a THEMIS L0 APID file. Bytes 20-23: Four binary bytes with SCID in long, unsigned integer format (MSB first). Bytes 24-27: Four binary bytes with APID in long, unsigned integer format. Bytes 28-31: Four binary bytes with the number of packets in long, unsigned integer format (MSB first). Bytes 32-35: Four binary bytes in 32-bit unsigned MSB format containing the full 4-digit year of the Start Date. Bytes 36-39: Four binary bytes in 32-bit unsigned MSB format containing the Month (1-12) of the Start Date. Bytes 40-43: Four binary bytes in 32-bit unsigned MSB format containing the Day-of-Month (1-31) of the Start Date. Bytes 44-47: Four binary bytes in 32-bit unsigned MSB format containing the version number of the file. Bytes : TBD Packet Size: Nx8, where N is based on APID

THEMIS SOCScience Data Products − 4March 29, 2006 Probe Level 1 (L1) Data Products L1 Probe State File (CDF Format) This will include: Probe Position (GEI Coordinates) Probe Velocity (GEI Coordinates) Probe Spin Axis Attitude (GEI Coordinates)

THEMIS SOCScience Data Products − 5March 29, 2006 Probe Level 1 (L1) Data Products L1 Calibration Data Files(ASCII or CDF Format) This will include: FGM Mounting Orthogonality and Gain FGM Boom Angles SCM Boom Angles SCM Gains ESA MCP Gains, one per anode for 16 anodes x 2 heads SST Gains, 3 per telescope x 4 telescopes x 2 shutter conditions (open/closed EFI 1 current and 3 voltages per sensor x 6 sensors

THEMIS SOCScience Data Products − 6March 29, 2006 Probe Level 1 (L1) Data Products L1 Data File(CDF Format) The CDF data files will: Contain ALL APIDs Cover a 24 hour period Be uncalibrated The end user will process this file using the other L1 products, UCB software, and GSFC/NSSDC CDF software to produce physical quantities: (L1 Products)x(NSSDC/CDF S/W)x(UCB S/W)=Physical Quantities

THEMIS SOCScience Data Products − 7March 29, 2006 Probe Level 2 (L2) Data Products Key Parameter Data Sets These will include the following in CDF format: 3-D magnetic field, DC waveforms and AC spectrograms 3-D electric field, DC waveforms and AC spectrograms, probe electric potential Core (10 eV - 40 keV) ion density and velocity moments, temperature and pressure tensor, energy spectrogram Core (5 eV-30 keV) electron temperature and pressure tensor, energy spectrogram Energetic ion and electron fluxes GMAG Activity Index Keograms (Ground image summaries)

THEMIS SOCScience Data Products − 8March 29, 2006 Probe Level 2 (L2) Data Products Summary Plots In general, these plots will take the form of single and multi-probe types, including ground based observations. These include:  Probe Detailed Overview o GMAG high latitude activity index + AKR trace in one panel o Bx, y, z in one panel o Ni, Ne, S/C plot in one panel o Vx, Vy, Vz, and Vt in one panel o Ex, Ey, and Ez in one panel o Omni-SST spectrum o Omni-ESA spectrum o kHz EFI spectrum o kHz SCM spectrum o Burst index o Time, position (GSM X,Y,Z)

THEMIS SOCScience Data Products − 9March 29, 2006 Probe Level 2 (L2) Data Products Summary Plots  Mission Overview o GMAG high latitude activity index o All AKRs in one panel o Three keograms from 3 stations o One panel containing Bt, Bz from all probes (color coded, max = 100 nT) o Five panels, each of: o Omni-SST spectrum + Omni ESA spectrum + Vx, Ni overlaid white o Burst index, 5 thin lines o Time

THEMIS SOCScience Data Products − 10March 29, 2006 GBO Level 1&2 Data Products Image Products Daily/Hourly keograms Daily/Hourly montage’s Ground Magnetometer Products “Flat” file (binary format, S/W available) Ascii file

THEMIS SOCScience Data Products − 11March 29, 2006 GBO Data Flows

THEMIS SOCScience Data Products − 12March 29, 2006 Summary ProductRequired S/WDistribution Medium Probe Level 0 (L0)Instrument Team IDL UCB C-Library UCB LAN Probe Level 1 (L1)UCB and CDF S/WCD/DVD to Co-I UCB Website UCB LAN Mission Key Parameter (KP) CDF S/W or UCB and CDF S/W UCalagary S/W Generic image viewing S/W UCB Website THEMIS-VAO GSFC-VMO CDAWEB Mission Summary Plots Generic Image Viewing S/W UCB Website THEMIS-VAO