GTAC Observation Log 1. Date : 28/11/2020 2. Observation Sr. No. : 12613 3. Observer : James McKee, BHAL CHANDRA JOSHI 4. Observer\'s Email : jamesmckee23@gmail.com, bcj@ncra.tifr.res.in 5. Project Name : Broadband Observations of Giant Pulses from the Millisecond Pulsars B1937\\\\+21 and B1957\\\\+20 6. Project Code : 37_004 7. Operator(s) : Nilesh 8. Command File : /odisk/gtac/cmd/37_004/28nov2020.cmd 9. LTA File : /gsbifrdata1/28nov/37_004a_28nov2020_band4_gsb.lta, /gwbifrdata1/28nov/37_004b_28nov2020_band3_gwb.lta, /gwbifrdata1/28nov/37_004a_28nov2020_band4_gwb.lta 10. LogFlag File : /odisk/online1/logflags/37_004B.FLAGS.14, /odisk/online1/logflags/37_004A.FLAGS.14 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 602 MHz ,RF2 : 602 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , IVLO1 : 62 MHz, IVLO2 : 62 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 : 16.666666 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 138 28. LO5 -2 : 167 29. Frequency Parameters (TPA) : 602 602 540 540 62 62 30. Integration Time : 2.0132 Sec 31. No of Antennas Working(Fringing) at the beginning :26 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. S03 : OFC cut. S04 : OFC cut. S06 : OFC cut. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 28 Nov 2020 20:00:00 - 28 Nov 2020 22:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :26 37. RFI Status : 38. Comments (During Observations) : 19:05 : Started settings. ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 100.0000 GPU_FINAL_BW : 100.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 1024 GPU_CHAN_NUM : 0:1023:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF3 : 500 500 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : 37_004B GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : 37_004A GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : Voltage GPU_BEAM_2 : Voltage GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 8 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. 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 -------------------------------- 19:40 : Started power eq for GSB and GWB on 2225-049. 19:55 : Started phasing for GSB and GWB on 2225-049. :::::::::::::: gsb_gac.dat :::::::::::::: # GSB GAC configuration is as follows : # BEAM-1:130 :: C00 C04 C05 C10 C11 C13 E03 S01 S02 W02 Total=10 # BEAM-1:175 :: C00 C04 C05 C10 C11 C13 E03 S01 S02 W02 Total=10 # BEAM-2:130 :: C00 C04 C05 C10 C11 C13 E03 S01 S02 W02 Total=10 # BEAM-2:175 :: C00 C04 C05 C10 C11 C13 E03 S01 S02 W02 Total=10 :::::::::::::: gwb_gac.dat :::::::::::::: # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C04 C05 C10 C11 C13 E03 S01 S02 W02 Total=10 # BEAM-1:175 :: C00 C04 C05 C10 C11 C13 E03 S01 S02 W02 Total=10 # BEAM-2:130 :: C01 C02 C06 C08 C09 C12 C14 E02 W01 Total=9 # BEAM-2:175 :: C01 C02 C06 C08 C09 C12 C14 E02 W01 Total=9 20:05 : Started command file. /odisk/gtac/cmd/37_004/28nov2020.cmd 20:06:35 : Started scan on 2225-049 for ~ 0.805306 min. 20:10:22 : Started scan on 2225-049 for ~ 1.94616 min. 20:12:35 : Started scan on 2225-049 for ~ 1.14085 min. 20:18:01 : Started scan on J1939+2134 for ~ 53.4522 min. 21:10 : source J1939+2134 set below horizon at 20:58 IST, data from 20:58 to 21:10 is bad. 21:14:00 : Started scan on 2225-049 for ~ 1.97971 min. 21:16:15 : Started scan on 2225-049 for ~ 1.14085 min. 21:20 : source set below horizon J1959+2048 at 21:16 IST, could not observe. 21:25:34 : Started scan on 3C48 for ~ 1.97971 min. 21:27:51 : Started scan on 3C48 for ~ 12.0796 min. 21:41:05 : Started scan on 3C48OFF for ~ 3.18767 min. 21:45 : observations closed.