GTAC Observation Log 1. Date : 03/06/2022 2. Observation Sr. No. : 14233 3. Observer : Subhashis Roy, Jun-Hui Zhao, Mark Root Morris, Miller Goss 4. Observer\'s Email : roy@ncra.tifr.res.in, jzhao@cfa.harvard.edu, morris@astro.ucla.edu, mgoss@nrao.edu 5. Project Name : Study of the Galactic center compact radio sources with uGMRT at 1.4 GHz 6. Project Code : ddtC172 7. Operator(s) : Deepak, Rupsing, Shriram, Surender 8. Command File : /data1/gtac/cmd/ddtc172/obs2.py 9. LTA File : /gsbifrdata/02jun/ddtc172_02jun2022_gsb.lta, /gwbifrdata2/02jun/ddtc172_02jun20222_gwb.lta 10. LogFlag File : 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 : 20+10 dB, 32 MHz,OFF, IF-CH2 : 20+10 dB, 32 MHz,OFF GSB SETTINGS : 14. GSB Host : gsbm1_shivneri 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE/TGC 18. GSB Fstop : ON 19. GAIN EQ : OFF 20. Stokes : Full_Stokes 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 : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. S06 : Servo problem. W04 : Servo problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 02 Jun 2022 21:00:00 - 03 Jun 2022 05:50:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :27 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 400.0000 GPU_FINAL_BW : 400 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Full_Stokes GPU_SIDEBAND : -1 -1 GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : DDTC172 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : ON GPU_TPA : From online/TGC tpa GPU_BITS : 4 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF GPU_PFB : OFF GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_WALSH : OFF GPU_ENV : RELEASED -------------------------------------------------------------------- 21:30 : Setup done. 21:45 : Power eq. on 3C286(GWB+GSB) --------------------------------------------------------------------- 21:59 : Started scan on 3C286 for ~ 5.01079 min. --------------------------------------------------------------------- 22:10 : Started scan on 1609+266 for ~ 5.3687 min. 22:21 : Started scan on GCP1 for ~ 10.33723 min. --------------------------------------------------------------------- 22:35 : Started pointing test. 23:20 : Pointing test over. --------------------------------------------------------------------- 23:22 : Started command file, \'/data1/gtac/cmd/ddtc172/obs2.py\' 00:50 : Command file stopped. --------------------------------------------------------------------- 00:57 : Started scan on 2136+006 for ~5 min. 01:02 : Scan stopped and restarted the command file. 05:21 : Command file stopped. ---------------------------------------------------------------------- 05:25 : Started scan on 2136+006 for ~5 min. 05:35 : Started scan on 3C48 for ~6 min. 05:45 : Started scan on 0319+415 for ~6 min. 05:51 : Scan stopped and observation session over.