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Laboratory for Atmospheric and Space Physics

EVE Spaceweather Data

We’re sad to report that EVE MEGS-A / SAM data stream has ended on Monday May 26, 2014 due to a power anomaly for MEGS-A CCD electronics. With SAM images being from MEGS-A CCD, both SAM solar X-ray images and MEGS-A spectra (6-37 nm) are not available now. The MEGS-A and SAM data from May 1, 2010 to May 26, 2014 will remain available from the EVE web site ( ).

All the other EVE instruments are working well, ESP, MEGS-B, and MEGS-P. We’ll be working with the EVE science team to optimize the EVE observations with those instruments.

SDO/GOES X-Ray Flare Watch

Latest soft X-ray image from the EVE SAM pinhole camera (10-minute updates)
Latest SAM


Latest Level 0CS diodes


Latest 3-day plot


The Latest Daily Quicklook Data file starts at 0:00 UT and is updated every minute with EVE photometer data. Another file with only the latest 15-minutes is also available.

The Latest Level 0C Spectra are available for downloading. These are 1-minute averages of the solar spectrum. The file latest_EVS_L0C.txt is updated every minute and contains the last 15 spectra. It takes about 7 minutes from the time photons are measured by EVE until the data are available in this file as a 1-minute averaged solar spectrum.

Archived Level 0C Spectra are also available for downloading. The files contain a full days of 1 minute average spectra. We encourage users of historical data to use the 10-second spectra from the level 2 products instead.
ESP is used to estimate the soft X-ray solar irradiance centroid shown below.


ESP solar irradiance centroid


SAM solar irradiance peak and centroid

SAM 0.1-7 nm solar irradiance peak centroid. The large white square is the peak location, and the diamond is the centroid.

The EVE SAM provides the best flare location information for soft X-rays.

  • SAM 5-minute irradiance peak and centroid data is available in daily ASCII files.
  • Latest & Historical 5-minute data
  • A historical 1-minute irradiance peak and centroid dataset is also available after the end of each UT day.


Internally used links

Quicklook data (engineering), EVE Flare Watch