GTAC Observation Log 1. Date : 18/04/2010 2. Observation Sr. No. : 4818 3. Observer : Sandeep Sirothia 4. Observer's Email : sirothia@ncra.tifr.res.in,ngk@ncra.tifr.res.in 5. Project Name : Extra Galactic survey 6. Project Code : 18_031 7. Operator(s) : Deepak, Santaji, 8. Command File : /odisk/gtac/cmd/sirothia/18_031_20100418a.gsb 9. LTA File : /rawdata/18apr/18_031_18apr2010.lta, /rawdata1/18apr/18_031_18apr2010.ltb 10. GSB File : /gsbifrdata/18apr/18_031_18apr2010_gsb.lta, 11. LogFlag File : /odisk/online1/logflags/18_031.FLAGS.7 ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 218 MHz, ILO2 : 218 MHz, IVLO1 : 62 MHz, IVLO2 : 62 MHz 14. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 16 MHz,ON, IF-CH2 : 4+12 dB, 16 MHz,ON 15. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : 16. Channels : 0:127:1 17. Frequency Parameters (TPA) : 156 156 218 218 62 62 18. Integration Time : 128 LTA ~ 16.908 Sec. 19. No of Antennas Working(Fringing) :26 20. Name of Non-Working Antennas (with reason for each) : C01 - OFF E04 - painting. W03 - ABC time out. E03 - no fringe. 21. Note for Backup :-- 22. Start and End Time of Obs.(IST): 17:00 - 06:05 23. ONLINE Machine : Shivneri 24. Correlator Mode : UsbPolar 25. Comments (During Observations) : ## 2sec integration files /rawdata/18apr/18_031_18apr2010_2s.lta /rawdata1/18apr/18_031_18apr2010_2s.ltb ---------------------------------------------- 17:02 : Started scan on 3C147. 17:25 : Started scan on J0218+4232. 17:45 : started command file /odisk/gtac/cmd/sirothia/18_031_20100418a.gsb 18:12 : Electrical power glitch. Command file stopped. C13 - servo time out. W03 - ABC time out. W04 - mcm 0,2 and 5 time out. 18:31 : Restarted command file. 19:20 : E04 released for observation. 19:41 : C13 started working. 06:05 : stopped the observation session.