GTAC Observation Log 1. Date : 14/05/2017 2. Observation Sr. No. : 9385 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) : Navnath, Surender 8. Command File : /odisk/gtac/cmd/32_082/13may_obs.cmd 9. LTA File : /gsbifrdata1/13may/32_082_13may2017_gsb.lta.1, /gsbifrdata1/13may/32_082_13may2017_gsb.lta, /gwbifrdata2/13may/32_082_13may17_gwb_850.lta, /gwbifrdata2/13may/32_082_13may17_gwb_800.lta, /gsbifrdata1/14may/32_082_14may2017.lta 10. LogFlag File : /odisk/online1/logflags/32_082.FLAGS.2 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , 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 : OFF 20. Stokes : Total_Intensity 21. Beam - 1 : IA 22. Beam - 2 : PA 23. ACQ BW : 33.333333 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 591 591 540 540 51 51 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) : C14 : : Structural Repair Work. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 13 May 2017 18:00:00 - 14 May 2017 00:10:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 16 Antennas @ 550-900 Band : C02 C03 C05 C06 C09 C10 C11 C13 W01 W06 E02 E03 E05 E06 S03 S06 ------------------------------------------------------------------------- 18:00 : Started stup. GWB : 200 Mhz, 8k channels, with GABLO 850 Mhz. 18:30 : Online getting frequently packet decode open , ssc task problem.. 19:45 : Restarted online. 19:00 : Again online stopped Working. 19:15 : Restarted ONLINE ... user4 and GSB , GWB das chain. 19:15 : S02 antenna sending bad packets hence tried S02 remote reset. 19:30 : Started scan on 3C286 for 15min. 19:22 : stopped command file. setting changed to 800 Mhz GWB : 200 Mhz, 8k channels, with GABLO 800 Mhz. 20:35 : Started command file from 3C286. /odisk/gtac/cmd/32_082/13may_obs.cmd 23:47 : Stopped command file. 23:50 : Started scan on 3C286. 00:00 : Stopped scan and observing session over.