GTAC Observation Log 1. Date : 25/08/2017 2. Observation Sr. No. : 9698 3. Observer : Samuel James McSweeney, Ramesh Bhat, Steven Tremblay, Avinash Anant Deshpande 4. Observer's Email : sammy.mcsweeney@gmail.com, ramesh.bhat@curtin.edu.au, steven.tremblay@curtin.edu.au, desh@rri.res.in 5. Project Name : Chasing the pulsar emission mechanism via sub-pulse drifting 6. Project Code : 32_079 7. Operator(s) : Deepak, Shilpa, Surender 8. Command File : /odisk/gtac/cmd 9. LTA File : /gsbifrdata1/25aug/32_079_25aug2017.lta, /gwbifrdata1/25aug/32_079_25aug2017_gwb.lta.7, /gwbifrdata1/25aug/32_079_25aug2017_gwb.lta.6, /gwbifrdata1/25aug/32_079_25aug2017_gwb.lta.5, /gwbifrdata1/25aug/32_079_25aug2017_gwb.lta.4, /gwbifrdata1/25aug/32_079_25aug2017_gwb.lta.3, /gwbifrdata1/25aug/32_079_25aug2017_gwb.lta.2, /gwbifrdata1/25aug/32_079_25aug2017_gwb.lta.1, /gwbifrdata1/25aug/32_079_25aug2017_gwb.lta 10. LogFlag File : /odisk/online1/logflags/32_079.FLAGS.3 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 : 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) : 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) : 33. Note for Backup : 34. Start and End Time of Obs.(IST): 25 Aug 2017 06:00:00 - 25 Aug 2017 14:10:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :30 37. Comments (During Observations) : ------------GWB Setting---------------------------------------------------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200.0000 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_RF4 : 500 500 GPU_SB4 : 1 1 GCODE4 : 32_079 GPU_BEAM_1 : Voltage GPU_BEAM_2 : PA GPU_BEAM_3 : PA GPU_BEAM_4 : PA GPU_BM_INT : 8 GPU_GAINEQ : ON GPU_TPA : From GWB GUI. GPU_BITS : 64 inputs. GPU_FILRFI : RFI Filterring OFF --------------------------------------------------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 Total=14 # BEAM-1:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 Total=14 # BEAM-2:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 Total=14 # BEAM-2:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 Total=14 # BEAM-3:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 W01 Total=17 # BEAM-3:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 W01 Total=17 # BEAM-4:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E04 E05 E06 S01 S02 S03 S04 S06 W01 W02 W03 W04 W06 Total=29 # BEAM-4:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E04 E05 E06 S01 S02 S03 S04 S06 W01 W02 W03 W04 W06 Total=29 --------------------------------------------------------------------------- Pulsar data file location Beam1 : gwbh7 : /data7/gpuuser/u32_079_25Aug2017 Beam2 : gwbh8 : /data7/gpuuser/u32_079_25Aug2017 Beam3 : gwbh9 : /data7/gpuuser/u32_079_25Aug2017 Beam4 : gwbh10: /data6/gpuuser/u32_079_25Aug2017 -------------------------------------------------------------------------- 06:00 : Started settings. 06:15 : Power equalized on 3C147 @ 150 counts. 06:20 : Phasing done on 3C147. 06:45 : E04 abc timeout, so removed from GAC. -------------------------------------------------------------------------- 06:50:12 : Started scan on 0837-198 for ~ 12.0796 min. 07:03:55 : Started scan on B0740-28 for ~ 7.78462 min. 07:13:30 : Started scan on 0837-198 for ~ 6.71088 min. 07:21:19 : Started scan on J0828-3417 for ~ 52.8817 min. 08:15:16 : Started scan on 0828-375 for ~ 5.10027 min. 08:21:48 : Started scan on J0828-3417 for ~ 37.3125 min. 09:00:06 : Started scan on 0828-375 for ~ 17.9852 min. 09:19:17 : Started scan on J0820-4114 for ~ 60.1295 min. ------------------------------------------------------------- 10:15:00 : Beam data showing Square wave pattern and halted GWB 3-4 times but problem not solved and restarted GWB with beam1 PA(CSQ) and Beam2 PA (CSQ+1 arm) ------------------------------------------------------------- ------------------------------------------------------------- 10:20:32 : Started scan on 0828-375 for ~ 11.8111 min. 10:34:42 : Started scan on 0837-198 for ~ 74.0881 min. 11:49:15 : Started scan on 0837-198 for ~ 6.17401 min. 11:57:01 : Started scan on 0828-375 for ~ 3.75809 min. 12:02:20 : Started scan on J0820-4114 for ~ 0 min. 12:02:51 : Started scan on J0820-4114 for ~ 94.678 min. ------------------------------------------------------------- 12:50:00 : 14:00:00 : Observed strong RFI in data. ------------------------------------------------------------- 13:38:50 : Started scan on 0828-375 for ~ 7.24775 min. 13:46:29 : Started scan on J0828-3417 for ~ 14.2271 min. 14:00:00 : Stopped scan and observation session over.