GTAC Observation Log 1. Date : 04/03/2011 2. Observation Sr. No. : 5270 3. Observer : Nissim Kanekar, Jayaram Chengalur 4. Observer's Email : nkanekar@ncra.tifr.res.in,chengalu@ncra.tifr.res.in 5. Project Name : A GMRT survey for HI-21cm absorption in strong MgII absorbers in the redshift desert 6. Project Code : 19_066 7. Operator(s) : Deepak, Sachin, Shilpa 8. Command File : /odisk/gtac/cmd/nissim/1542+1756.cmd, /odisk/gtac/cmd/nissim/1653+3107.cmd 9. LTA File : 10. GSB File : /gsbifrdata/4mar/19_066_04mar2011_gsb.lta, /gsbifrdata/4mar/19_066_04mar2011_gsb.lta.1 11. LogFlag File : /odisk/online1/logflags/19_066.FLAGS.22, /odisk/online1/logflags/19_066.FLAGS.23 ANTENNA SETTINGS : 12. RF Freq(MHz) & Solar Attn(dB)- RF1 : 575 MHz ,RF2 : 575 MHz, SA1 : 0 dB, SA2 : 0 dB 13. Ist LO (MHz) & IVth LO (MHz) : ILO1 : 505 MHz, ILO2 : 505 MHz, IVLO1 : 70 MHz, IVLO2 : 70 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 : GHB Settings : 16. GHB Channels : 0:127:1 17. Correlator Mode : IndianPolar 18. Frequency Parameters (TPA) : 575 575 505 505 70 70 GSB Settings : 19. Maximum Channels : 512 20. Final Bandwidth (MHz): 4 MHz; Step # 2 21. IFBW (MHz) : LO5 (KHz) : Custom :- 16 : 139 - 166 22. Stokes : Total_Intensity 23. Beam - 1 : OFF 24. Beam - 2 : OFF 25. Integration Time : 128 LTA ~ 16.908 Sec. 26. No of Antennas Working(Fringing) :28 27. Name of Non-Working Antennas (with reason for each) : E04 : Servo problem C04 : BLDC work 28. Note for Backup :-- 29. Start and End Time of Obs.(IST): 04:00 - 12:32 30. ONLINE Machine : Lenyadri 31. Comments (During Observations) : 04:14 : Started scan on 3C286 for 10mins. 04:32 : Started scan on 1513+236 for 7mins. 04:47 : Started command file. 05:34 : Source is transiting, scan stopped. Restarted command file from phase cal. 07:43 : Stopped command file. 07:46 : Started scan on 3C286. 07:56 : Stopped scan. --------------------------------------------------------------------------------- Changed the settings. tpa 640 640 570 570 70 70. RF band : 610MHz. IF BW : 16MHz. GSB BW : 4.167 MHz. LO(5) : 137.5 MHz, 167.5 MHz. Step : 2. Data file : /gsbifrdata/4mar/19_066_04mar2011_gsb.lta.1 08:04 : Started scan on 3C286. C01 : No fringe. 08:08 : S02 taken for painting. 08:14 : Stopped scan. 08:17 : '/odisk/gtac/cmd/nissim/1653+3107.cmd' command file started. 09:51 : C11 taken for painting. 11:05 : Stopped command file as the phase cal was about to set. 11:06 : Restarted command file starting with phase cal. 12:01 : Stopped command file. 12:07 : Started scan on 3C48. 12:32 : Stopped scan and observing session over.