GTAC Observation Log

1. Date : 20/04/2019
2. Observation Sr. No. : 11001
3. Observer : Mengyao Xue, Ramesh Bhat, Stephen Ord, Steven Tremblay, Charlotte Sobey, Sanjay S. Kudale
4. Observer's Email : mengyao.xue@postgrad.curtin.edu.au, ramesh.bhat@curtin.edu.au, stephen.ord@csiro.au, steven.tremblay@curtin.edu.au, charlotte.sobey@csiro.au, ksanjay@gmrt.ncra.tifr.res.in
5. Project Name : Investigating the depolarisation of pulsars behind the Gum Nebula
6. Project Code : 36_087
7. Operator(s) : Deepak
8. Command File : /odisk/gtac/cmd/36_087/obs_2.cmd, /odisk/gtac/cmd/36_087/obs_3.cmd, /odisk/gtac/cmd/36_087/obs_4.cmd, /odisk/gtac/cmd/36_087/obs_5.cmd
9. LTA File : /gsbifrdata1/20apr/36_087_20apr2019.lta.1, /gsbifrdata1/20apr/36_087_20apr2019.lta, /gwbifrdata1/20apr/36_087_20apr2019_gwb.lta.1, /gwbifrdata1/20apr/36_087_20apr2019_gwb.lta
10. LogFlag File : /odisk/online1/logflags/36_087.FLAGS.1, /odisk/online1/logflags/36_087.FLAGS

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 156 MHz ,RF2 : 156 MHz, SA1 : 14 dB, SA2 : 14 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 218 MHz, ILO2 : 218MHz , 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 : OFF
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) : 156 156 218 218 62 62
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :23

32. Name of Non-Working Antennas (with reason for each) :
W06 : ABC time out
C14 : Mechanical work
C04 : No fringe(GSB+GWB)
E03 : NO fringe(GSB+GWB)
E06 : No fringe(GSB+GWB)
S04 : No fringe(GSB+GWB)
W02 : No fringe(GSB+GWB)
Huge RFI seen frequently.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 20 Apr 2019 16:00:00 - 20 Apr 2019 22:00:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :24

37. Comments (During Observations) :
# GWB GAC configuration is as follows : 
# BEAM-1:130 :: C00 C01 C02 C03 C05 C06 C08 C09 C10 C11 C12 C13 C14 Total=13
# BEAM-1:175 :: C00 C01 C02 C03 C05 C06 C08 C09 C10 C11 C12 C13 C14 Total=13
# BEAM-2:130 :: C00 C01 C02 C03 C05 C06 C08 C09 C10 C11 C12 C13 C14 Total=13
# BEAM-2:175 :: C00 C01 C02 C03 C05 C06 C08 C09 C10 C11 C12 C13 C14 Total=13

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 16
GPU_ACQ_BW  	: 100.0000
GPU_FINAL_BW  	: 100.0000
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 8192
GPU_CHAN_NUM  	: 0:8191:1
GPU_STOKES  	: Full_Stokes
GPU_SIDEBAND  	: 1 1
GPU_RF4  	: 240  240
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: 1 1
GCODE4  	: 36_087
GPU_CNTRL  	: ONLINE
GPU_FSTOP  	: ON
GPU_BEAM_1  	: PA
GPU_BEAM_2  	: PA
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
--------------------------------
16:00 : Started setup
17:00 : C14 released for observation.
18:00 : Phase is varying rapidly for antennas.
19:01 : Correlator restarted with only Central square antennas
19:15 : Phasing on PHDR source.
19:30 : Started command file /odisk/gtac/cmd/36_087/obs_2.cmd
        Phasing on PHDR
20:30 : Started command file /odisk/gtac/cmd/36_087/obs_3.cmd
20:35 : Phasing on PHDR.
21:10 : Started command file /odisk/gtac/cmd/36_087/obs_4.cmd
21:42 : Started command file /odisk/gtac/cmd/36_087/obs_5.cmd
22:00 : Observation stopped.