GTAC Observation Log 1. Date : 12/01/2022 2. Observation Sr. No. : 13854 3. Observer : Vivek M, Nayana AJ, C.H. IshwaraChandra 4. Observer\'s Email : vivek.m@iiap.res.in, nayan89deva@gmail.com, ishwar@ncra.tifr.res.in 5. Project Name : Follow-up uGMRT observations of a quasar showing extreme X-ray & radio variability 6. Project Code : 41_062 7. Operator(s) : Sachin 8. Command File : /odisk/gtac/cmd/obs.py 9. LTA File : /gsbifrdata/12jan/41_062_12jan2022_gsb.lta, /gwbifrdata1/12jan/41_062_12jan2022_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 : 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/TGC 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 :27 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C01 : FE problem. E03 : Servo maintenance. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 12 Jan 2022 04:00:00 - 12 Jan 2022 07:00:00 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 : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 41_062 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 : ON GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_WALSH : OFF GPU_ENV : RELEASED -------------------------------- ----------------------------------------------------------------------- 04:15:56 : Started scan on 3C286 for ~ 15.2113 min. 04:34:00 : Started scan on 1602+334 for ~ 5.18975 min. 04:40:58 : Started scan on SDSSJ1539 for ~ 30.0647 min. 05:12:38 : Started scan on 1602+334 for ~ 5.01079 min. 05:19:14 : Started scan on SDSSJ1539 for ~ 30.0647 min. 05:50:52 : Started scan on 1602+334 for ~ 5.01079 min. 05:57:31 : Started scan on SDSSJ1539 for ~ 30.0647 min. 06:29:30 : Started scan on 1602+334 for ~ 5.01079 min. 06:36:11 : Started scan on SDSSJ1539 for ~ 13.7797 min. 06:54:37 : Started scan on 1602+334 for 5 mins. 07:00 : Stopped scan and closed observation session.