GTAC Observation Log

1. Date : 06/05/2017
2. Observation Sr. No. : 9356
3. Observer : Fabrizio ArrigoniBattaia, Andra Stroe, Carlos DeBreuck
4. Observer's Email : farrigon@eso.org, astroe@eso.org, cdebreuc@eso.org
5. Project Name : Constraining the Radio Emission within Enormous Lyman-Alpha Nebulae around (Assumed) Radio-Quiet Quasars
6. Project Code : 32_006
7. Operator(s) : Nilesh
8. Command File : /odisk/gtac/cmd/32_006/obs_s1.cmd
9. LTA File : /gsbifrdata1/06may/32_006_06may2017.lta.1, /gwbifrdata2/06may/32_006_06may2017.lta.2, /gwbifrdata2/06may/32_006_06may2017.lta.1, /gwbifrdata2/06may/32_006_06may2017.lta
10. LogFlag File : /odisk/online1/logflags/32_006.FLAGS.1

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 : 512
26. Channel Numbers : 0:511:1
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 :27

32. Name of Non-Working Antennas (with reason for each) :
C11 : Not released for observation (Servo work).
C14 : Not released for observation (Mechanical work).
C01 : Low Fringe.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 06 May 2017 18:10:00 - 06 May 2017 23:00:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :27

37. Comments (During Observations) :
18:00 : Started settings.

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 4
GPU_ACQ_BW  	: 200.0000
GPU_CHAN_MAX  	: 2048
GPU_CHAN_NUM  	: 0:2047:1
GPU_STOKES  	: Total_Intensity
GPU_RF4  	: 500  500
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: 1 1
GCODE4  	: 32_006
--------------------------------

18:16:54 : Started scan on 3C147 for ~ 9.9321 min.
GWB Problem: DATA LOSS. observed, restarted GWB.
18:30:35 : Started scan on 3C147 for ~ 20.9379 min.
GWB Problem: DATA LOSS. observed, restarted GWB.
18:56:06 : Started scan on 3C147 for ~ 17.7167 min.
19:14:08 : Started scan on 3C147 for ~ 1.87905 min.
GWB Problem: DATA LOSS. observed, restarted GWB.
19:18:48 : Started scan on 3C147 for ~ 5.77136 min.

NOTE : Scintillation is observed in the data from 19:16 IST, so continuing with calibrator.

19:36 : Stopped scan.
19:40 : Started command file.
          /odisk/gtac/cmd/32_006/obs_s1.cmd

21:00 : Data looks better (little free from scintillation).
22:33 : Stopped scan and command file.
22:35 : Started scan on phase cal for ~ 5 min.
22:47 : Started scan on 3C286 for ~ 15 min.
23:00 : Stopped scan and observation closed.