GTAC Observation Log 1. Date : 27/07/2020 2. Observation Sr. No. : 12232 3. Observer : Apurva bera 4. Observer\'s Email : apurba@ncra.tifr.res.in 5. Project Name : DDTC obseration 6. Project Code : DDTC139 7. Operator(s) : Nilesh, Rupsing 8. Command File : /odisk/gtac/cmd/38_065/obs27july.txt 9. LTA File : /gsbifrdata1/27jul/ddtc139_27jul2020_gsb.lta, /gwbifrdata1/27jul/ddtc139_27jul2020_gwb.lta 10. LogFlag File : /odisk/online1/logflags/DDTC139.FLAGS.1 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1409 MHz ,RF2 : 1409 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1460 MHz, ILO2 : 1460MHz , 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) : 1409 1409 1460 1460 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :21 32. Name of Non-Working Antennas (with reason for each) : C03 : : Mechanical Work C01 : : MCM time out + intermittent servo problem. C02 : : ABC time out. S02 : : FEED Jammed. W02 : : No fringe GSB, MCM time out. W06 : : ABC time out. C06 : : FEED Jammed. S06 : : No fringe GWB. S04 : : No fringe at Pol2(chan2) for both GSB and GWB. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 27 Jul 2020 05:40:00 - 27 Jul 2020 09:10:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :21 37. RFI Status : 38. Comments (During Observations) : 05:40 : Started settings. ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 400.0000 GPU_FINAL_BW : 400.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 1400 1400 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : DDTC139 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 16 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 4 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- 05:51 : Started scan on 3C147 for ~ 15 min.. 06:10 : Started command file. /odisk/gtac/cmd/38_065/obs27july.txt 09:01 : Stooped command file and observation session over.