GTAC Observation Log 1. Date : 18/12/2020 2. Observation Sr. No. : 12691 3. Observer : Narendra Nath Patra, Nirupam Roy, Prerana Biswas, Mousumi Das, Juliana Saponara 4. Observer\'s Email : naren.ncra@gmail.com, roy.nirupam@gmail.com, prerana.biswas1994@gmail.com, chandaniket@gmail.com, juliana.saponara@gmail.com 5. Project Name : HI observation of dark matter deficient galaxies 6. Project Code : 39_064 7. Operator(s) : Sachin, Shilpa, Shriram 8. Command File : /odisk/gtac/cmd/39_064/18dec/ugc.cmd 9. LTA File : /gsbifrdata/18dec/39_064_18dec2020_gsb.lta 10. LogFlag File : /odisk/online1/logflags/39_064.FLAGS.6 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1408.8501 MHz ,RF2 : 1408.8501 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1345 MHz, ILO2 : 1345MHz , IVLO1 : 63.8501 MHz, IVLO2 : 63.8501 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+14 dB, 16 MHz,ON, IF-CH2 : 4+14 dB, 16 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 : OFF 22. Beam - 2 : OFF 23. ACQ BW : 16.666666 MHz 24. Final BW : 4 MHz; Step # 1 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 136.1499 28. LO5 -2 : 168.8501 29. Frequency Parameters (TPA) : 1408.8501 1408.8501 1345 1345 63.8501 63.8501 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :24 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C08 : All MCM timed out. C09 : All MCM timed out. E06 : All MCM timed out. W03 : All MCM timed out. C05 : Feed problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 18 Dec 2020 03:00:00 - 18 Dec 2020 10:05:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :24 37. RFI Status : 38. Comments (During Observations) : Note : GWB correlator is not working. ------------GSB Setting--------------------------------------------------- GSB_MODE : Realtime GSB_LTA : 8 GSB_ACQ_BW : 16.666666 GSB_FINAL_BW : 4 GSB_EDGE_FRQ : 1 GSB_CHAN_MAX : 512 GSB_CHAN_NUM : 0:511:1 GSB_STOKES : Total_Intensity GSB_CNTRL : ONLINE GSB_FSTOP : ON GSB_BEAM_1 : OFF GSB_BEAM_2 : OFF GSB_GAINEQ : OFF GSB_BB_LO : 136.1499:168.8501 GSB_HOSTS : gsbm1_shivneri undefined : OFF undefined : 306 -------------------------------------------------------------------------- 03:04:17 : Started scan on 3C147 for ~ 16.5088 min. 03:34:58 : Started command file, \'/odisk/gtac/cmd/39_064/18dec/ugc.cmd\' 09:50:00 : Stopped command file. 09:52:20 : Started scan on 3C286. 10:05:00 : Stopped scan and observing session over.