SOXS

Solar X-Ray Spectrometer, or SOXS, was an experimental payload launched onboard Indian geostationary satellite GSAT-2 by the Indian Space Research Organisation, ISRO. SOXS collected data about X-ray emissions from solar flares with high energy and temporal resolutions.^[1][2]

Features

• X-Ray spectrometer (SOXS) was flown onboard GSAT-2 on 8 May 2003.
• SOXS employs Si and CZT semiconductor devices, which are extremely high resolution and low noise detectors.
• Detector package is mounted on a sun pointing mechanism with tracking accuracy better than 0.1 degree.
• Pulse height (PHA) measurements in 256 channels
• System dead time - 16 microseconds for Si Pin and 13 microseconds for CZT
• Energy window counters
• On board calibration using Cd109 radio isotope
• System health parameters monitoring
• Onboard selection for background rejection (LLD/threshold)
• In view of temperature sensitivity of the detectors, observational interval is < 3 hrs starting from 04:00 to 06:45 UT.
• Block schematics of SLD Payload (SLED, SFE, SLE and SCE)
• SSTM daily tracking (0 to 189 degrees)^[2]