GTAC Observation Log 1. Date : 17/06/2010 2. Observation Sr. No. : 4917 3. Observer : Sandeep Sirothia,Nimisha 4. Observer's Email : sirothia@ncra.tifr.res.in,ngk@ncra.tifr.res.in 5. Project Name : Extra Galactic survey @ 150MHz 6. Project Code : 18_031 7. Operator(s) : Amruta, Nilesh, Shilpa 8. Command File : /odisk/gtac/cmd/sirothia/18_031_20100617a.cmd, /odisk/gtac/cmd/sirothia/18_031_20100617b.cmd 9. LTA File : /rawdata/17jun/18_031_17jun2010.lta, /rawdata1/17jun/18_031_17jun2010.ltb, 10. GSB File : /gsbifrdata/18jun/18_031_18jun2010_gsb.lta 11. LogFlag File : /odisk/online1/logflags/18_031.FLAGS.47 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 : 10+12 dB, 16 MHz,ON, IF-CH2 : 10+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) :28 20. Name of Non-Working Antennas (with reason for each) : C03 : No Fringe. C08 : Fringe fluctuations in GHB. 21. Note for Backup :-- 22. Start and End Time of Obs.(IST): 17:30 - 07:00 23. ONLINE Machine : Shivneri 24. Correlator Mode : UsbPolar 25. Comments (During Observations) : -------------------------------------------------- 2s data files : /rawdata/17jun/18_031_17jun2010_2s.lta /rawdata1/17jun/18_031_17jun2010_2s.ltb /gsbifrdata1/17jun/18_031_17jun2010_gsb_2s.lta, /gsbifrdata/18jun/18_031_18jun2010_gsb_2s.lta -------------------------------------------------- 17:30 : Started setup. 17:40 : Started scan on 3C147. 18:11 : Starteds scan on 3C286. 18:22 : Started command file. /odisk/gtac/cmd/sirothia/18_031_20100617a.cmd 18:22 : C13 Taken for Servo maintenance. 18:37 : C13 released for observation. 00:32 : Stopped command file. 00:37 : '/odisk/gtac/cmd/sirothia/18_031_20100617b.cmd' command file started. 05:45 : Phase cal 1822-096 set. scan no. 174 bad. GSB recording automatically killed. Halted GSB. 06:03 : Restarted GSB. --------------------------------------------------