GTAC Observation Log 1. Date : 21/01/2011 2. Observation Sr. No. : 5208 3. Observer : Sandeep Sirothia, Ishwara Chandra 4. Observer's Email : sirothia@ncra.tifr.res.in,ishwara@ncra.tifr.res.in 5. Project Name : The GMRT extra-galactic sky survey at 150 MHz 6. Project Code : 19_043 7. Operator(s) : Deepak, Navanath, Rupsingh, 8. Command File : /odisk/gtac/cmd/sirothia/19_043_20110121a.cmd, /odisk/gtac/cmd/sirothia/loop2to5.cmd 9. LTA File : /rawdata/21jan/19_043_21jan2011.lta, /rawdata1/21jan/19_043_21jan2011.ltb 10. GSB File : /gsbifrdata/21jan/19_043_21jan2011_gsb.lta 11. LogFlag File : /odisk/online1/logflags/19_043.FLAGS.54 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 : 6+12 dB, 16 MHz,ON, IF-CH2 : 6+12 dB, 16 MHz,ON 15. BB BW(KHz) & BB ALC : 16000 KHz, ON CORRELATOR SETTINGS : GHB Settings : 16. GHB Channels : 0:127:1 17. Correlator Mode : UsbPolar 18. Frequency Parameters (TPA) : 156 156 218 218 62 62 GSB Settings : 19. Maximum Channels : 256 20. Final Bandwidth (MHz): OFF MHz; Step # 0 21. IFBW (MHz) : LO5 (KHz) : 16:138000-167000 22. Stokes : Full_Polar 23. Beam - 1 : OFF 24. Beam - 2 : OFF 25. Integration Time : 128 LTA ~ 16.908 Sec. 26. No of Antennas Working(Fringing) :27 27. Name of Non-Working Antennas (with reason for each) : C00,C03 : Painting. C10 : ABC time out. 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 17:00 - 07:00 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : * 2S data file * /rawdata/21jan/19_043_21jan2011_2s.lta, /rawdata1/21jan/19_043_21jan2011_2s.ltb, /gsbifrdata1/21jan/19_043_21jan2011_gsb_2s.lta -------------------------------------------------------------------------- 16:58 : Started scan on 3C48. 17:18 : Stopped scan. 17:20 : Started scan on J0218+4232. 17:40 : Stopped scan. 17:44 : Started command file '/odisk/gtac/cmd/sirothia/19_043_20110121a.cmd' 18:25 : C10 started working. 18:36 : C00 released for observation. 18:48 : C03 released for observation. 01:25 : Command file stopped. : Started changing track to outer track. 01:46 : Restarted command file. /odisk/gtac/cmd/sirothia/outer.cmd 06:00 : Started scan on phase cal. 06:09 : Started scan on flux cal. 07:00 : Stopped scan and observing session over. -------------------------------------------------------------------------- NOTE : C02 : got resets @ 05:48 and recovered ante 06:08 on flux cal. : C10,C11 high self counts -------------------------------------------------------------------------- Delay jumps : USB : S02,S04. LSB : C02,S02,S04. GSB : C02 shows delay jumps for 130channel. C01,C04,C08,C09,C11 shows delay jumps for 175channel. S02,S03,S04,S06 shows delay jumps for both channel. --------------------------------------------------------------------------