GTAC Observation Log 1. Date : 24/12/2017 2. Observation Sr. No. : 9980 3. Observer : Robert Main, Dongzi Li, FangXi Lin, Nikhil Mahajan, Ue Li Pen, Keith Vanderlinde, Marten H vanKerkwijk, I-Sheng Yang 4. Observer's Email : main@astro.utoronto.ca, dzli@cita.utoronto.ca, flin@cita.utoronto.ca, mahajan@astro.utoronto.ca, pen@cita.utoronto.ca, vanderlinde@di.utoronto.ca, mhvk@astro.utoronto.ca, iyang@perimeterinstitute.ca 5. Project Name : Understanding the Extreme Lensing Events of the Black Widow`s radio eclipse 6. Project Code : 33_012 7. Operator(s) : Navnath, Rupsing 8. Command File : /odisk/gtac/cmd 9. LTA File : /gsbifrdata1/24dec/33_012_24dec2017.lta, /gwbifrdata2/24dec/33_012_24dec2017_gwb.lta 10. LogFlag File : /odisk/online1/logflags/PNTG.FLAGS.2593 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255MHz , 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 : OFF 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : Volt 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) : 306 306 255 255 51 51 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :30 32. Name of Non-Working Antennas (with reason for each) : E06 : : Painting Work W06 : : FE Work ( fringe fluctuation) 33. Note for Backup :data : gwbh7 on data7 area. 34. Start and End Time of Obs.(IST): 24 Dec 2017 10:00:00 - 24 Dec 2017 14:00:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :30 37. Comments (During Observations) : 10:00 : Started setup. 10:30 : GWB not showing corss correlation : Tried switched mode. 11:00 : Rebooted GWBH6. problem solved 11:10 : power eq and phasing done. Started cmd file. 11:11:45 : Started scan on 1859+129 for ~ 2.41592 min. 11:14:24 : Started scan on 1859+129 for ~ 1.61061 min. 11:17:14 : Started scan on B1957+20 for ~ 24.9645 min. 11:43:49 : Started scan on 1859+129 for ~ 1.87905 min. 11:46:09 : Started scan on 1859+129 for ~ 1.34218 min. 11:48:51 : Started scan on B1957+20 for ~ 24.9645 min. 12:15:45 : Started scan on 1859+129 for ~ 1.61061 min. 12:17:44 : Started scan on 1859+129 for ~ 1.61061 min. 12:20:42 : Started scan on B1957+20 for ~ 25.5013 min. 12:48:12 : Started scan on 1859+129 for ~ 1.61061 min. 12:50:14 : Started scan on 1859+129 for ~ 1.61061 min. 12:53:52 : Started scan on B1957+20 for ~ 25.2329 min. 13:23:16 : Started scan on 1859+129 for ~ 2.14748 min. 13:25:38 : Started scan on 1859+129 for ~ 0.53687 min. 14:00 : Observation session over. ============================================================================= # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W01 W02 Total=19 # BEAM-1:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W01 W02 Total=19 ------------------------------------------------------------------- # GSB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W01 W02 Total=19 # BEAM-1:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W01 W02 Total=19 # BEAM-2:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W01 W02 Total=19 # BEAM-2:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 S02 W01 W02 Total=19 =============================================================================== ------------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 : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 500 500 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 33_012 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : Voltage GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 64 inputs. GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF --------------------------------