GTAC Observation Log 1. Date : 03/5/2014 2. Observation Sr. No. : 7080 3. Observer : Rajeshwari Dutta,Raghunathan Srianand,Neeraj Gupta,Patrick Petitjean,Pasquier Noterdaeme,hadi Rahmani 4. Observer's Email : rdutta@iucaa.ernet.in,anand@iucaa.ernet.in,nrjgupta@gmail.com,ppetitje@iap.fr,noterdaeme@iap.fr,hadi@iucaa.ernet.in 5. Project Name : CHITALS: Cold HI 21-cm Absorption Line Survey 6. Project Code : 26_029 7. Operator(s) : Manisha,Navanath,Nilesh,Pramod,Surender 8. Command File : /odisk/gtac/cmd/rdutta/qgpj0802p16.cmd,/odisk/gtac/cmd/rdutta/qgpj1438p17.cmd 9. LTA File : /gsbifrdata/03may/26_029_03may2014.lta,/gsbifrdata/03may/26_029_03may2014.lta.1,/gsbifrdata/03may/26_029_03may2014.lta.2, 10. LogFlag File : /odisk/online1/logflags/26_029.FLAGS.13,/odisk/online1/logflags/26_029.FLAGS.11,/odisk/online1/logflags/26_029.FLAGS.10,/odisk/online1/logflags/26_029.FLAGS.12, ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1392.269 MHz ,RF2 : 1392.269 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1330 MHz, ILO2 : 1330 MHz , IVLO1 : 62.269 MHz, IVLO2 : 62.269 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+16 dB, 16 MHz,ON, IF-CH2 : 4+16 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Mode : Realtime 15. GSB LTA : 8 16. GSB CTRL : ONLINE 17. GSB Fstop : ON 18. GAIN EQ : OFF, 19. Stokes : TotIntensity 20. Beam - 1 : OFF 21. Beam - 2 : OFF 22. ACQ BW : 33.33 MHz 23. Final BW : 33.333333 MHz; Step # 0 24. Maximum Channels : 256 25. Channel Numbers : 0:255:1 26. LO5 -1 : 149.00 27. LO5 -2 : 156.00 28. Frequency Parameters (TPA) : 1392.269 1392.269 1330 1330 62.269 62.269. 29. Integration Time : 16.106112 Sec. 30. No of Antennas Working(Fringing) at the begining :27 31. Name of Non-Working Antennas (with reason for each) : S04 : FPS Work. S06 : BLDC work. W02 : ILO UNLOCK. 32. Note for Backup : 33. Start and End Time of Obs.(IST): 13:00 - 05:00 34. ONLINE Machine : Shivneri 35. No of Antennas Working(Fringing) at the end :28 36. Comments (During Observations) : 13:00 : LO4 settings problem. 13:15 : LO4 problem solved. 13:17 : started scan on 3C147 ~15mins. 13:40 : started command file. /odisk/gtac/cmd/rdutta/qgpj0802p16.cmd 16:24-16:58 Power failure. 16:58 : Restarted scan on phase cal. 17:11 : Started scan on 3C147 for 8min. (C04,C06,C06,C08-175 low fringe problem observed) 17:21 : GSB chain halted, Rebooted GSB cluster. 17:28 : started scan on 3c147 for 10min. ( (C04,C06,C06,C08-175 low fringe problem Solved) 17:40 : ReStarted cmd file. /odisk/gtac/cmd/rdutta/qgpj0802p16.cmd 20:48 : cmd file stop. 20:56 : Started scan on 3C286 for 10 min. 21:06 : observing session one over. --------------------------------------------------------------------- 21:10 : Started new set-up. line freq- 1238.5819. GSB line observation setup RF band= 1280 (1220 - 1340) LO1= 1170 (lower) IFBW= 18 GSB [ACQ] BW= 16.6666 Total Channel= 512 Line/Center Frequency= 1238.5819 CH#[0]= 1236.5032 CH#[512]= 1240.6698 BW= +4.1666 CW= 8.14 (KHz.) Digital SubBand/step#= 2 is USEABLE ### GSB_CONFIG LO5= 141.83 163.17 LTA_FILE L05= 133.4968 171.5032 BASE_BAND LO4= 58.17 58.17 tpa 1228.17 1228.17 1170 1170 58.17 58.17 21:16 : Started scan on 3C286 fro 15 min. : W02 started working...(Non Working Antennas:- S04,S06) 21:40 : Started cmd file. /odisk/gtac/cmd/rdutta/qgpj1438p17.cmd 01:50 : Stopped command file. 01:50 : Started scan on 3C286 for 10min. 02:05 : Restarted command file. 03:11 : Stopped command file. 03:12 : Started scan on 3C286 for 10min. 03:25 : Restarted command file. 05:00 : Stopped command file and observing session is over.