BackForwardInstrument:  IXAE 

Instrument details
Acronym IXAE
Full name Indian X-ray Astronomy Experiment
Purpose To study periodic and aperiodic intensity and spectral variations in X-ray sources (Sun and bright stars)
Short description Assemblage of three co-aligned collimated Pointed Proportional Counters (PPC) operating in the energy range 2-20 keV; and a X-ray Sky Monitor (XSM), energy range 2-8 keV
Background New development
Scanning Technique PPC: sun pointing; XSM: pointing a sky sector of 90° x 90°. From a sunsynchronous orbit
Resolution Sun: N/A (full disk); interplanetary space: 0.03°
Coverage / Cycle Full solar disk at 10 s intervals; full interplanetary space in 100 min (orbital period) with sampling at 10 s intervals
Mass Power Data Rate


Providing Agency ISRO
Instrument Maturity Flown on an R&D satellite
Utilization Period: 1996 to 2004
Last update: 2017-05-21
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
  • Space radiometer or spectrometer
WIGOS Subcomponents No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives
  • X-ray flux spectrum
  • X-ray sky image
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
Note: * Primary mission objective.
VariableRelevance for measuring this variableOperational limitationsExplanation
X-ray flux spectrum*3 - highNo specific limitation.Interplanetary space viewing, high spectral resolution
X-ray sky image*1 - primaryNo specific limitation.Interplanetary space viewing, spectrometry with high spatial resolution
Heliospheric image3 - highNo specific limitation.Interplanetary space viewing in the X-ray band (0.001-10 nm)