GTAC Observation Log 1. Date : 04/08/2020 2. Observation Sr. No. : 12263 3. Observer : Jacob Eli Turner, Megan L Jones, BHAL CHANDRA JOSHI, Maura Ann McLaughlin, Dan Stinebring 4. Observer\'s Email : jet0027@mix.wvu.edu, megan.jones@nanograv.org, bcj@ncra.tifr.res.in, maura.mclaughlin@mail.wvu.edu, dan.stinebring@oberlin.edu 5. Project Name : Scintillation Arcs and Dispersion Measure Changes: A Pilot Project 6. Project Code : 38_041 7. Operator(s) : Sachin 8. Command File : /odisk/gtac/cmd/38_041/38_041_03august2020.cmd.txt 9. LTA File : /gwbifrdata2/03aug/38_041C_band5_suba2_03aug2020_gwb.lta, /gwbifrdata2/03aug/38_041B_band4_suba3_03aug2020_gwb.lta, /gwbifrdata2/03aug/38_041A_band3_suba4_03aug2020_gwb.lta 10. LogFlag File : /odisk/online1/logflags/PNTG.FLAGS.3634 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 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 : 4.0265 Sec 31. No of Antennas Working(Fringing) at the beginning :23 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work C04 : FPS problem. S03 : Structural repair. C12 : Servo problem. W04 : Servo timed out. S02 : ABC timed out. W06 : No fringe. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 03 Aug 2020 20:00:00 - 04 Aug 2020 00:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :23 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF2 : 1460 1460 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 38_041C GPU_RF3 : 550 550 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : -1 -1 GCODE3 : 38_041B GPU_RF4 : 500 500 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 38_041A GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : PA GPU_BEAM_2 : PA GPU_BEAM_3 : PA GPU_BEAM_4 : OFF GPU_BM_INT : 32 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C01 C02 C08 C09 C13 Total=5 # BEAM-1:175 :: C01 C02 C08 C09 C13 Total=5 # BEAM-2:130 :: C06 C10 C14 E03 S01 W02 Total=6 # BEAM-2:175 :: C06 C10 C14 E03 S01 W02 Total=6 # BEAM-3:130 :: C00 C05 E04 E05 S04 W03 Total=6 # BEAM-3:175 :: C00 C05 E04 E05 S04 W03 Total=6 21:11:31 : Started scan on 3C286 for ~ 6.97932 min. 21:21:52 : Started scan on 3C286 for ~ 2.5054 min. Since off source was 6d apart from original source so needed to kill gotosrc, so the scan went ahead and recorded on 3C286off. 21:28:54 : Started scan on 3C286OFF for ~ 2.41592 min. 21:30 : Subarray 4 stopped taking command. Restarted user-4 and suba-4 00:00 : observation session closed. --------------------------------------------------