GTAC Observation Log 1. Date : 26/02/2017 2. Observation Sr. No. : 9224 3. Observer : Veeresh Singh, C.H. IshwaraChandra, Yogesh Wadadekar, Preeti Kharb 4. Observer's Email : veeresh.iia@gmail.com, ishwar@ncra.tifr.res.in, yogesh@ncra.tifr.res.in, preeti.kharb@gmail.com 5. Project Name : Very deep L−band survey of ELAIS−N1 with uGMRT 6. Project Code : 31_072 7. Operator(s) : Pramod, Rupsing 8. Command File : /odisk/gtac/cmd/31_072/obs.cmd 9. LTA File : /gsbifrdata1/26feb/31_072_26feb2017.lta 10. LogFlag File : /odisk/online1/logflags/PNTG.FLAGS.2253, /odisk/online1/logflags/31_072.FLAGS 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+12 dB, 32 MHz,ON, IF-CH2 : 4+12 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 :26 32. Name of Non-Working Antennas (with reason for each) : E03 : feed cage painting. W04 : ABC time out. S06 : Fringe fluctuation in GSB but working GWB4. E04 : 130 pol low self 33. Note for Backup : 34. Start and End Time of Obs.(IST): 26 Feb 2017 07:00:00 - 26 Feb 2017 12:37:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :26 37. Comments (During Observations) : 07:05 : Pointing done -------------------------------------------------------------------------- 07:15 : Setup done with GWB4. -------------------------------------------------------------------------- 07:20 : W05 no fringe in GWB4 -------------------------------------------------------------------------- 07:25 : GWB4 power equalize done. -------------------------------------------------------------------------- O7:26 : Started scan 3C286. -------------------------------------------------------------------------- 07:30 : GAB reset for W05 -------------------------------------------------------------------------- 07:40 : W05 fringing. -------------------------------------------------------------------------- 07:45 : Stopped scan. 07:48 : Started command file. ------------------------------------------------------------------------- 09:08 : C13 taken for painting. 11:23 : W04 started working. ------------------------------------------------------------------------- 12:17 : Stopped command file 12:21 : Started scan on 3C48. 12:37 : Stopped scan and observation session is over.