GTAC Observation Log 1. Date : 28/12/2020 2. Observation Sr. No. : 12731 3. Observer : Jayanta Roy, Apurba Bera, Surajit Mondal 4. Observer\'s Email : jroy@ncra.tifr.res.in, apurba@ncra.tifr.res.in, surajit@ncra.tifr.res.in 5. Project Name : Multi-band uGMRT observations of two repeating FRBs with periodic activities 6. Project Code : 39_066 7. Operator(s) : Nilesh 8. Command File : /odisk/gtac/cmd/jroy/39_066_27dec.cal.polar.cmd, /odisk/gtac/cmd/jroy/39_066_27dec.2.polar.cmd 9. LTA File : /gwbifrdata/27dec/39_066a_27dec2020_gwb.lta, /gwbifrdata/27dec/39_066_27dec2020_gwb.lta 10. LogFlag File : /odisk/online1/logflags/PNTG.FLAGS.3818, /odisk/online1/logflags/39_066A.FLAGS.7, /odisk/online1/logflags/39_066A.FLAGS.6, /odisk/online1/logflags/39_066A.FLAGS.5, /odisk/online1/logflags/39_066.FLAGS.9, /odisk/online1/logflags/39_066.FLAGS.8, /odisk/online1/logflags/39_066.FLAGS.7, /odisk/online1/logflags/39_066.FLAGS.6, /odisk/online1/logflags/39_066.FLAGS.5, /odisk/online1/logflags/39_066.FLAGS.4 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 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 :29 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 27 Dec 2020 17:00:00 - 28 Dec 2020 00:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. RFI Status : 38. Comments (During Observations) : 17:00 : Pointing was not correct, restarted pointing. 18:00 : Started settings. 18:20 : GWB band-shapes unusual behaviour. 18:30 : re-configured, GAB and RF settings looked fine. Still band-shapes flat for most of the antennas. 18:50 : Control switched to ONLINE. 19:00 : Started settings. ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 16 GPU_ACQ_BW : 400.0000 GPU_FINAL_BW : 400.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 8192 GPU_CHAN_NUM : 0:8191:1 GPU_STOKES : Full_Stokes GPU_SIDEBAND : 1 1 GPU_RF3 : 550 550 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : -1 -1 GCODE3 : 39_066A GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 39_066 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : PA GPU_BEAM_3 : OFF GPU_BEAM_4 : PA GPU_BM_INT : 32 GPU_GAINEQ : ON GPU_TPA : From GWB GUI. GPU_BITS : 4 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF GPU_PFB : OFF GPU_PFB_TAPS : 16 GPU_BEAM_BIT : 8 GPU_VLT_BIT : 8 GPU_ENV : TRIAL -------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: Total=0 # BEAM-1:175 :: Total=0 # BEAM-2:130 :: C00 C01 C02 C04 C06 C10 C11 E02 S01 S02 S03 W01 Total=12 # BEAM-2:175 :: C00 C01 C02 C04 C06 C10 C11 E02 S01 S02 S03 W01 Total=12 # BEAM-3:130 :: Total=0 # BEAM-3:175 :: Total=0 # BEAM-4:130 :: C05 C08 C09 C12 C13 C14 E03 E04 E05 E06 S04 S06 W02 W03 W04 W05 W06 Total=17 # BEAM-4:175 :: C05 C08 C09 C12 C13 C14 E03 E04 E05 E06 S04 S06 W02 W03 W04 W05 W06 Total=17 19:18 : Started command file. /odisk/gtac/cmd/jroy/39_066_27dec.cal.polar.cmd 19:55 : Re-phasing on 3C147. 20:02 : Started command file. /odisk/gtac/cmd/jroy/39_066_27dec.2.polar.cmd 23:50 : Stopped command file and observing session over. ------------------------------