BackForwardInstrument:  GGAK-E/DIR-E 

Instrument details
Acronym GGAK-E/DIR-E
Full name Solar X-ray radiation flux sensor
Purpose To measure the Intensity of the soft solar X-ray radiation
Short description X-ray counter for the range 3.0-10.0 keV, measurement at 1 s intervals
Background Part of the GGAK-E (Heliogeophysical Instrument Complex on Electro-L) package, also confirmed for Electro-M (GGAK-E/M) and adapted to Arctica (GGAK-E/A)
Scanning Technique Sun pointing from GEO
Resolution N/A (full disk)
Coverage / Cycle Full solar disk at 1 ms intervals
Mass Power Data Rate


Providing Agency Roscosmos
Instrument Maturity Flown on operational programme
Utilization Period: 2012-01-15 to 2016
Last update: 2020-03-02
Detailed characteristics
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Solar and space environment monitors
  • Solar activity monitor
WIGOS Subcomponents No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives
  • Solar X-ray flux
Show allShow fewer
Tentative Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
VariableRelevance for measuring this variableOperational limitationsExplanation
Solar X-ray flux4 - fairNo specific limitation.Few channels, moderate dynamic range