GTAC Observation Log 1. Date : 04/10/2020 2. Observation Sr. No. : 12489 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) : Navnath, Nilesh 8. Command File : /odisk/gtac/cmd 9. LTA File : /gsbifrdata1/03oct/37_004b_03oct2020_band3_gsb.lta, /gsbifrdata1/03oct/37_004a_03oct2020_band4_gsb.lta, /gsbifrdata1/03oct/37_004_03oct2020_b4_gsb.lta, /gsbifrdata1/03oct/37_004_03oct2020_b3_gsb.lta, /gwbifrdata1/03oct/37_004b_03oct2020_band3_gwb.lta, /gwbifrdata1/03oct/37_004a_03oct2020_band4_gwb.lta, /gwbifrdata1/03oct/37_004_03oct2020_b4_gwb.lta, /gwbifrdata1/03oct/37_004_03oct2020_b3_gwb.lta 10. LogFlag File : /odisk/online1/logflags/37_004B.FLAGS.9, /odisk/online1/logflags/37_004B.FLAGS.8, /odisk/online1/logflags/37_004B.FLAGS.10, /odisk/online1/logflags/37_004A.FLAGS.9, /odisk/online1/logflags/37_004A.FLAGS.8, /odisk/online1/logflags/37_004A.FLAGS.10 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 612 MHz ,RF2 : 612 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 550 MHz, ILO2 : 550MHz , 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) : 612 612 550 550 62 62 30. Integration Time : 2.0132 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. S04 : Maintenance. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 03 Oct 2020 22:00:00 - 04 Oct 2020 00:50:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :28 37. RFI Status : 38. Comments (During Observations) : 22:45 : Started settings. ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 8 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 : 400 400 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 : 16 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 -------------------------------- :::::::::::::: gsb_gac.dat :::::::::::::: # GSB GAC configuration is as follows : # BEAM-1:130 :: C00 C08 C10 C11 C13 E03 S01 S02 W02 Total=9 # BEAM-1:175 :: C00 C08 C10 C11 C13 E03 S01 S02 W02 Total=9 # BEAM-2:130 :: C00 C08 C10 C11 C13 E03 S01 S02 W02 Total=9 # BEAM-2:175 :: C00 C08 C10 C11 C13 E03 S01 S02 W02 Total=9 :::::::::::::: gwb_gac.dat :::::::::::::: # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C08 C10 C11 C13 E03 S01 S02 W02 Total=9 # BEAM-1:175 :: C00 C08 C10 C11 C13 E03 S01 S02 W02 Total=9 # BEAM-2:130 :: C01 C02 C04 C05 C06 C09 C12 E02 W01 Total=9 # BEAM-2:175 :: C01 C02 C04 C05 C06 C09 C12 E02 W01 Total=9 22:30 : Started power eq on 3C48. 22:02:22 : Started scan on 3C48 for ~ 2.98634 min. 22:00 : Settings done, started command file. 22:05 : USER3 problem (ref NJS). 22:35 : Restarted command file, after restarting USER\'s. 22:39:32 : Started scan on 2225-049 for ~ 1.67772 min. 22:42 : USER3 problem. stopped command file. 22:49 : Restarted command file. 22:50:33 : Started scan on 3C48 for ~ 0.973078 min. 22:51:47 : Started scan on 3C48 for ~ 1.84549 min. 22:58:37 : Started scan on 3C48 for ~ 3.79165 min. 23:02:50 : Started scan on 3C48 for ~ 3.05345 min. 23:07:29 : Started scan on 3C48 for ~ 3.92586 min. 23:12:42 : Started scan on 3C48OFF for ~ 2.01326 min. 23:22:22 : Started scan on 2225-049 for ~ 0.939523 min. 23:23:35 : Started scan on 2225-049 for ~ 0.805306 min. 23:30 : Online USER 3 problem, killed automatically (U3.pl). This had also occurred couple of times from 22 HRS. ( Ref NJS). 23:35 : NEEDED to HALT DAS processes. as scan for U3 was running, which crashed in between. 23:45 : RESTARTED ONLINE USER4 and USER3. RESTARTED DAS PROCESSES. 23:48:29 : Started scan on 2225-049 for ~ 3.62388 min. 23:52:30 : Started scan on 2225-049 for ~ 3.15411 min. 23:55:58 : Started scan on 2225-049 for ~ 2.08037 min. 00:02:51 : Started scan on J1939+2134 for ~ 17.2134 min. NOTE : GSB PA Voltage recording command failed for disk \"/mnt/b\" for both NODE 33 and NODE 34. Moreover Frequent BUFFER LOSS for GSB DAS CHAIN observed. this could be due to Network related issues. Pulsar DATA FILES : node33:/mnt/[b,d]/gsbuser/37_004A_[03,04]oct2020/* node33:/mnt/[b,d]/gsbuser/37_004A_[03,04]oct2020/* gwbh7:/data7/gpuuser/37_004A_data7_[03,04]oct2020/* gwbh8:/data7/gpuuser/37_004A_data7_[03,04]oct2020/* 00:45 : Stopped observations.