GTAC Observation Log 1. Date : 19/07/2021 2. Observation Sr. No. : 13308 3. Observer : Shubham Singh, Jayanta Roy 4. Observer\'s Email : ssingh@ncra.tifr.res.in, jroy@ncra.tifr.res.in 5. Project Name : GMRT follow-up of magnetar SGR 1935\\\\+2154 triggered by a recent activation 6. Project Code : ddtC196 7. Operator(s) : Sachin 8. Command File : /odisk/gtac/cmd/obs.py 9. LTA File : /gwbifrdata2/19jul/ddtc196_19jul2021_band4_gwb.lta 10. LogFlag File : ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , 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) : 591 591 540 540 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :24 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C09 : Servo problem. C06 : Phasing problem. C01 : No fringe. C08 : phasing problem. E06 : GAB problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 19 Jul 2021 03:00:00 - 19 Jul 2021 05:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :24 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 8 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 8192 GPU_CHAN_NUM : 0:8191:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF1 : 1460 1460 GPU_DDCLO1 : 540.000000 540.000000 GPU_SB1 : 1 1 GCODE1 : SUBA1 GPU_RF2 : 1200 1200 GPU_DDCLO2 : 0.000000 0.000000 GPU_SB2 : 1 1 GCODE2 : SUBA2 GPU_RF3 : 1460 1460 GPU_DDCLO3 : 0.000000 0.000000 GPU_SB3 : 1 1 GCODE3 : SUBA3 GPU_RF4 : 470 470 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : SUBA4 GPU_RF5 : 1060 1060 GPU_DDCLO5 : 0.000000 0.000000 GPU_SB5 : 1 1 GCODE5 : SUBA5 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : VOLTAGE GPU_BEAM_2 : OFF GPU_BEAM_3 : PA GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : ON GPU_TPA : From online/TGC tpa GPU_BITS : 8 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_ENV : RELEASED -------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C02 C11 C12 C14 S01 W01 Total=6 # BEAM-1:175 :: C02 C11 C12 C14 S01 W01 Total=6 # BEAM-2:130 :: Total=0 # BEAM-2:175 :: Total=0 # BEAM-3:130 :: C00 C04 C05 C10 C13 E02 E03 E04 E05 S02 S04 W03 W04 W05 Total=14 # BEAM-3:175 :: C00 C04 C05 C10 C13 E02 E03 E04 E05 S02 S04 W03 W04 W05 Total=14 # BEAM-4:130 :: Total=0 # BEAM-4:175 :: Total=0 03:47:52 : Started scan on 2052+365 for ~ 3.3107 min. 03:51:30 : Started scan on 2052+365 for ~ 16.1956 min. 04:11:52 : Started scan on J1939+2134 for ~ 5.72662 min. 04:24:41 : Started scan on J1935+2154 05:00 : Closed observation session.