GTAC Observation Log 1. Date : 09/12/2015 2. Observation Sr. No. : 8236 3. Observer : Rajeshwari Dutta, Raghunathan Srianand, Neeraj Gupta, Ravi Joshi, Ayanda Romanis Zungu 4. Observer's Email : rdutta@iucaa.ernet.in, anand@iucaa.ernet.in, ngupta@iucaa.ernet.in, physistravi@gmail.com, arzngu@gmail.com 5. Project Name : HI 21-cm absorption from z~0.35 MgII systems 6. Project Code : 29_035 7. Operator(s) : Navnath, Pramod, Sachin 8. Command File : /odisk/gtac/cmd/29_035/08dec15_2/obs.cmd 9. LTA File : /gsbifrdata/08dec/29_035_08dec2015.lta, /gsbifrdata1/08dec/29_035_08dec15.lta 10. LogFlag File : /odisk/online1/logflags/29_035.FLAGS.7 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1011.2376 MHz ,RF2 : 1011.2376 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 950 MHz, ILO2 : 950MHz , IVLO1 : 61.2376 MHz, IVLO2 : 61.2376 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 16 MHz,ON, IF-CH2 : 4+14 dB, 16 MHz,ON GSB SETTINGS : 14. GSB Host : gsbm1_shivneri 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : ON 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 16.666666 MHz 24. Final BW : 4 MHz; Step # 8 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 138.7624 28. LO5 -2 : 166.2376 29. Frequency Parameters (TPA) : 1011.2376 1011.2376 950 950 61.2376 61.2376 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : E06 : Taken for Maintenance. W01 : Taken for BLDC 33. Note for Backup : 34. Start and End Time of Obs.(IST): 08 Dec 2015 18:00:00 - 09 Dec 2015 02:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :28 37. Comments (During Observations) : 17:45 : Started set up. 18:06 : Started scan on 3C48 for 1o min. 18:16 : Stopped scan and started command file. '/odisk/gtac/cmd/29_035/08dec15_2/obs.cmd' 22:32 : Stopped command file. 22:36 : Started scan on 3C48 for 10 min 22:46 : Stopped scan and restarted command file. 01:35 : Stopped command file. 01:44 : Recorded 7 mins data on phase cal. 01:50 : Started scan on 3C48. 02:05 : Stopped scan on 3C48 and closed observation session.