GTAC Observation Log 1. Date : 22/07/2017 2. Observation Sr. No. : 9592 3. Observer : Rajeshwari Dutta, Raghunathan Srianand, Neeraj Gupta 4. Observer's Email : rdutta@iucaa.in, anand@iucaa.in, ngupta@iucaa.in 5. Project Name : uGMRT search for OH absorption towards highly reddened quasars 6. Project Code : 32_050 7. Operator(s) : Pramod, Rupsing, Surender 8. Command File : /odisk/gtac/cmd/32_050/22jul17/obs.cmd 9. LTA File : /gsbifrdata/22jul/32_050_22jul2017.lta.1, /gsbifrdata/22jul/32_050_22jul2017.lta 10. LogFlag File : /odisk/online1/logflags/32_050.FLAGS.3, /odisk/online1/logflags/32_043.FLAGS.2 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 711.1135 MHz ,RF2 : 711.1135 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 650 MHz, ILO2 : 650MHz , IVLO1 : 61.1135 MHz, IVLO2 : 61.1135 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 : 4 MHz; Step # 2 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 138.8865 28. LO5 -2 : 166.1135 29. Frequency Parameters (TPA) : 711.1135 711.1135 650 650 61.1135 61.1135 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :26 32. Name of Non-Working Antennas (with reason for each) : C01 : Feed Jammed. W03 : Strong RFI. C00 : Servo time-out. C10 : Servo problem 33. Note for Backup : 34. Start and End Time of Obs.(IST): 22 Jul 2017 12:00:00 - 22 Jul 2017 18:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :27 37. Comments (During Observations) : 12:00 : Started set-up. (17 antennas working in 550-900 MHz except W03 & C10) 12:18 : Started scan on 3C147. 12:36 : Started command file. "/odisk/gtac/cmd/32_050/22jul17/obs.cmd" 13:00 : Online packed decode opened. 13:13 : restarted command file. "/odisk/gtac/cmd/32_050/22jul17/obs.cmd" 14:34 : C00 released for observation. 17:41 : Stopped command file. 17:44 : Started scan on 3C286. 17:54 : Stopped scan because of electrical power failure. 18:00 : Observation session is over.