Software to read the CDF files is available below.

The CDF Skeleton Table documents the following items.

• The basic EICS parameters included in the SDF.
  • H+, O+, and He+ (if available) fluxes for 15 energy (~0.01 to ~20 keV/e) and 14 pitch angle bins for fixed 96 second intervals.
  • Estimates of the standard deviation of the reported flux value in each of the 15 energy and 14 pitch angle bins.
  • Detailed information about the energy and angular ranges.
• Satellite Position Data included in the SDF
  • Geographic position (lat, long, and altitude)
  • Geomagnetic position (invl, mlt, and geomagnetic latitude)
• Data Quality Information
  • The Three data quality flags (N, C, and A) described in the documentation accompanying the full mass, energy, angle resolution EICS SATF format.
  • A flag set after visual examination of summary spectrograms reveled short intervals of telemetry noise. Data with this flag set were not used in the large scale statistical studies noted below.
  • A flag set when visual examination of summary spectrograms revealed intervals where complete pitch angle data were not available.
  • A flag set when it was not possible to use the summary spectrogram to set the three flags noted above.
  • Background counting rate and its uncertainty
  • A flag indicating the availability of He+ data
• An outline of the file naming convention
• References to papers reporting large scale statistical results derived from the SDF data set.

NASA Developed Software

NASA has developed an extensive set of software based on the Common Data Format.

The DE/EICS SDF format includes ISTP/IACG Dictionary Keywords (as they were defined on October 1, 1995). Use of these keywords will facilitate analysis of DE/EICS SDF data with general purpose software tools.

Fortran and C language interfaces to the CDF format are also available from NASA.

Lockheed Developed Software

An IDL procedure that reads and plots EICS SDF file was developed to validate the conversion of SDF from VAX binary to NASA CDF format. This procedure accepts two command line inputs: The file name (e.g. '81310_EICS_DE'), and the output format (e.g. 'x' or 'ps'). An output spectrogram from the 'x' output of the IDL procedure and the TEST.cdf file from which it was created are available at the LASP server site in the URLs:

https://lasp.colorado.edu/timas/DE/TEST.gif and
https://lasp.colorado.edu/timas/DE/TEST.cdf and

The code used to validate correct and complete transfer to the CDF format is provided as a template on which analysis and display software can be built. Note that an IDL version of 4.0 or higher is necessary to read CDF version 2.5 files.

Coverage and Availability