GTAC Observation Log

1. Date : 30/01/2017
2. Observation Sr. No. : 9170
3. Observer : Chandreyee Maitra, Subhashis Roy, Yashwant Gupta, Fabio Acero
4. Observer's Email : chandreyeee@gmail.com, roy@ncra.tifr.res.in, ygupta@ncra.tifr.res.in, fabio.acero@cea.fr
5. Project Name : First radio imaging and polarization measurement of the nebula of the nearby energetic pulsar PSR J0855-4644
6. Project Code : 31_061
7. Operator(s) : Nilesh, Sachin
8. Command File : /odisk/gtac/cmd/roy/psrj0855.cmd
9. LTA File : /gsbifrdata1/29jan/31_061_29jan2017.lta.1, /gsbifrdata1/29jan/31_061_29jan2017.lta
10. LogFlag File : /odisk/online1/logflags/31_061.FLAGS

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1454 MHz ,RF2 : 1454 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1505 MHz, ILO2 : 1505MHz , 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 : Full_Stokes
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) : 1454 1454 1505 1505 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): 29 Jan 2017 22:00:00 - 30 Jan 2017 04:00:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :30

37. Comments (During Observations) :
GWB data file is on gwbh6 machine : 
/gwbifrdata/29jan/31_061_29jan2017_1460.lta

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 4
GPU_ACQ_BW  	: 200.0000
GPU_FINAL_BW  	: 1.0
GPU_EDGE_FRQ  	: 0.000000
GPU_CHAN_MAX  	: 1024
GPU_CHAN_NUM  	: 0:1023:1
GPU_STOKES  	: Full_Stokes
GPU_RF  	: 1460  1460
GPU_LO-1  	: 540  540
GPU_DDC  	: OFF
GPU_DDCLO  	: 0.0000  0.0000
GPU_SIDEBAND  	: 1 1
GPU_RF4  	: 1460  1460
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: 1 1
GCODE4  	: 31_061
GPU_CNTRL  	: ONLINE
GPU_FSTOP  	: ON
GPU_BEAM_1  	: OFF
GPU_BEAM_2  	: OFF
GPU_BM_INT  	: 8
GPU_GAINEQ  	: OFF
GPU_TPA  	: From GWB GUI.
GPU_BITS  	: 64 inputs.
GPU_FILRFI  	: RFI Filterring OFF
--------------------------------

NOTE : W04-CH2 and W05-CH2 has very strong RFI lines during observations.

22:18 : Started scan on 3C147 for ~ 6.8451 min.
22:32 : Started command file.

NOTE : Earlier GSB running with GAIN ON and ALC ON.
23:23 : GSB Halted, keeping GWB4 running.
23:25 : Restarted GSB with GAIN OFF and ALC OFF.
23:25 : Started power equalize power on target source @ 200 counts for GSB.
23:40 : power eq done, Started recording GSB, with ALC OFF and power eq.

00:38 to 00:46 : Satellite alarm (mini ang distance 1.6 deg ~ 00:42 IST).
03:00 : Stopped command file, continued scan on target source till it sets, as 0835-451 has already set.

03:12 : Stopped scan, source set below horizon.
03:14 : Started scan on 0837-198 for ~ 5 min.
03:27 : Started scan on 1609+266 for ~ 10 min.
03:40 : Started scan on 3C286 for ~ 23 min.
04:03 : Stopped scan and observation closed.