GTAC Observation Log 1. Date : 04/01/2017 2. Observation Sr. No. : 9111 3. Observer : Raghunathan Srianand, Neeraj Gupta, Rajeshwari Dutta, Ravi Joshi, Pasquier Noterdaeme, Patrick Petitjean 4. Observer's Email : anand@iucaa.in, ngupta@iucaa.in, rdutta@iucaa.in, physistravi@gmail.com, noterdaeme@iap.fr, ppetitje@iap.fr 5. Project Name : uGMRT search for 21-cm absorption in an extremely strong and dusty DLA at z~4 6. Project Code : 31_115 7. Operator(s) : Deepak, Navnath, Surender 8. Command File : /odisk/gtac/cmd/31_115/obs.cmd 9. LTA File : /gsbifrdata1/03jan/31_115_03jan2017.lta, /gwbifrdata/03jan/31_115_03jan2017_gwb.lta 10. LogFlag File : /odisk/online1/logflags/31_115.FLAGS ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 293.1704 MHz ,RF2 : 293.1704 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 230 MHz, ILO2 : 230MHz , IVLO1 : 63.1704 MHz, IVLO2 : 63.1704 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 32 MHz,ON, IF-CH2 : 4+14 dB, 32 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 : 2 MHz; Step # 3 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 136.8296 28. LO5 -2 : 168.1704 29. Frequency Parameters (TPA) : 293.1704 293.1704 230 230 63.1704 63.1704 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : E02 : Servo problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 03 Jan 2017 20:10:00 - 04 Jan 2017 05:02:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 20:10 : Started set-up. 20:25 : Started scan on 3C147 for 10mins. 20:42 : Started command file. /odisk/gtac/cmd/31_115/obs.cmd 04:44 : Started scan on 3C147 for 10 min. 05:00 : Observation session over. -