click here for CDF format Documentation.
click here for an on line CDF file translator.
Data is currently released for the following instruments and dates:
SWEA (3D Distributions) - through 2009-08-31
LET - through 2009-09-30
SEPT - through 2009-08-31
MAG - through 2009-08-31 - ASCII data is available here. (for CDF use first two links above)
STE - through 2009-08-04
SWEA (moments, PADs) - to be released soon
HET - none available
SIT - from Mar 15, 2007 through 2009-08-31
SWEA PADs (Beta Version) - from Dec 1, 2006 through 2009-02-28
DATA CAVEATS
Right now, all calibrations should be considered preliminary. Check this website often for updates to these data files.
Caveats regarding specific data sets:
LET - Caveats are discussed here.
SEPT - Caveats are discussed here.
SIT - Caveats are discussed here. Please be sure to use V06 or higher SEPT data files. SEPT data files in earlier versions had incorrect times.
MAG - The MAG X sensor on the Ahead spacecraft experiences occasional glitches of about 1/2 nT. These glitches are extremely fast (duration of a small fraction of a second. The cause of the glitches is currently not understood and will be corrected in a future data release.
STE - Data are in counts, but IDL routines in our IMPACT TPLOT library extensions are available for converting to physical units.
Details on the STE instrument can be found here.
SWEA PADs (Beta Version) - SWEA PADs are in beta stage. These PADs are not corrected to the solar wind frame (yet) and lowest energies are contaminated by spacecraft potential effects.
SWEA caveat: Since commissioning, the SWEA instruments on both STEREO spacecraft have registered difficult to characterize degradations in the solar wind core electron energies, probably due to charging effects. The nature of the degradations are such that we cannot reliably report electron measurements below 100 eV. However, halo and higher energy electrons are unaffected. Versions 4 and higher of the SWEA 3D distribution data products have these lower energies removed. Similarly, versions 4 and higher of the SWEA pitch angle distribution products also remove these energies. Use of the SWEA pitch angle distributions for most purposes (for example, higher energy heat flux PADs) should be largely unaffected. For more information regarding these issues please contact Peter Schroeder (peters@ssl.berkeley.edu). IF YOU HAVE DOWNLOADED VERSION 3 or earlier FILES, THOSE FILES CONTAIN UNRELIABLE DATA BELOW 100 EV AND SHOULD BE REPLACED WITH VERSION 4.
