GTAC Observation Log 1. Date : 23/05/2017 2. Observation Sr. No. : 9422 3. Observer : Neeraj Gupta, Raghunathan Srianand, Rajeshwari Dutta, Aditya JNHS 4. Observer's Email : ngupta@iucaa.in, anand@iucaa.in, rdutta@iucaa.in, adityaj@iucaa.in 5. Project Name : Blind search of HI 21-cm and OH 18-cm absorbers using uGMRT 6. Project Code : 32_082 7. Operator(s) : Nilesh, Shilpa, Surender 8. Command File : /odisk/gtac/cmd/32_082/32_082_23may.cmd 9. LTA File : /gsbifrdata1/23may/32_082_23may2017.lta, /gwbifrdata1/23may/32_082_23may2017.lta 10. LogFlag File : /odisk/online1/logflags/32_082.FLAGS.10 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1454 MHz ,RF2 : 1454 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1505 MHz, ILO2 : 1505MHz , IVLO1 : 51 MHz, IVLO2 : 51 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 : 33.333333 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 1454 1454 1505 1505 51 51 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) : C14 : Structural repair. S02 : ABC timeout. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 23 May 2017 04:00:00 - 23 May 2017 09:35:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :26 37. Comments (During Observations) : 03:00 : Started set-up. 03:05 : Started scan on 3C286 for 15mins. 03:23 : Started command file. /odisk/gtac/cmd/32_082/32_082_23may.cmd 06:51 : Stopped command file due to Electrical power failure. 07:20 : Electrical power resumed @ 07:16, started settings. W02 and W04 : Servo problems. 07:43 : Started scan 2330+110 for 15 min. 08:00 : Started command file. 09:30 : Stopped observation.