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Instrument details
Full name Solar X-ray and gamma-ray Scintillation Spectrometer
Purpose To study solar flare processes in ranges of the soft X-ray to gamma-ray region
Short description Scintillation spectrometer for the energy range 0.01-8 MeV, using windows of 10-50 keV, 50-250 keV and 250-800 keV. Resolving power: 12
Background Consolidated technology
Scanning Technique Sun pointing from a LEO high-inclination drifting orbit
Resolution N/A (full disk)
Coverage / Cycle Full Sun disk integral at about 1-s rate
Mass 35 kg Power 10 W Data Rate


Providing Agency Roscosmos
Instrument Maturity Flown on an R&D satellite
Utilization Period: 1994 to 1994-07-15
Last update: 2017-05-17
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 spectrum
  • Solar gamma-ray flux spectrum
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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 gamma-ray flux spectrum2 - very highNo specific limitation.Moderate dynamic range, but associated to X-ray observation
Solar X-ray flux spectrum3 - highNo specific limitation.Coarse spectral resolution, wide dynamic range