GTAC Observation Log

1. Date : 01/07/2017
2. Observation Sr. No. : 9531
3. Observer : Dusmanta Patra, Sabyasachi Pal
4. Observer's Email : dusmanta.phy@gmail.com, sabya@csp.res.in
5. Project Name : GMRT multi-frequency observations of a giant size double double radio galaxy J0218-21
6. Project Code : 32_019
7. Operator(s) : Deepak, Sachin
8. Command File : /odisk/gtac/cmd/32_019/obs.txt
9. LTA File : /gsbifrdata1/01jul/32_019_01jul2017.lta.1, /gsbifrdata1/01jul/32_019_01jul2017.lta, /gwbifrdata1/01jul/32_019_01jul2017_gwb.lta.1, /gwbifrdata1/01jul/32_019_01jul2017_gwb.lta
10. LogFlag File : /odisk/online1/logflags/32_019.FLAGS

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 591 MHz ,RF2 : 591 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , 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) : 591 591 540 540 51 51
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :28

32. Name of Non-Working Antennas (with reason for each) :
C03 : MCM 5 timed out.
W04 : Intermittent fringing
GWB : W-arm and E-arm low cross amplitude for extreme  arm  antennas.
GSB :  175 polarization of C00,C01,C02,C09,C10,C11,C12 not fringing from 06:30 to 08:00 AM.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 01 Jul 2017 06:00:00 - 01 Jul 2017 10:00:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :28

37. Comments (During Observations) :

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 4
GPU_ACQ_BW  	: 400.0000
GPU_FINAL_BW  	: 400.0000
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 2048
GPU_CHAN_NUM  	: 0:2047:1
GPU_STOKES  	: Total_Intensity
GPU_SIDEBAND  	: 1 1
GPU_RF4  	: 900  900
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: 1 1
GCODE4  	: 32_019
GPU_CNTRL  	: ONLINE
GPU_FSTOP  	: ON
GPU_BEAM_1  	: OFF
GPU_BEAM_2  	: OFF
GPU_BEAM_3  	: OFF
GPU_BEAM_4  	: OFF
GPU_BM_INT  	: 8
GPU_GAINEQ  	: ON
GPU_TPA  	: From GWB GUI.
GPU_BITS  	: For 32 inputs
GPU_FILRFI  	: RFI Filterring OFF
--------------------------------
04:45 : Started command file.

08:00 : 175 polarization of C00,C01,C02,C09,C10,C11,C12 stopped fringing.
08:10 : After restarting GSB DAS chain, above antenna started working.

09:47 : Command file stopped.
09:52 : Started scan on 3C48 for 10mins.
10:02 : Observation stopped.