GTAC Observation Log

1. Date : 24/08/2019
2. Observation Sr. No. : 11366
3. Observer : Barnali Das, Poonam Chandra
4. Observer's Email : barnali@ncra.tifr.res.in, poonam@ncra.tifr.res.in
5. Project Name : Low frequency study of the stars HD 133880 and HD 35298
6. Project Code : 36_034
7. Operator(s) : Deepak, Rupsing, Shilpa
8. Command File : /odisk/gtac/cmd/36_034/24_aug/obs.cmd
9. LTA File : /gsbifrdata1/24aug/36_034_24aug2019.lta, /gwbifrdata/24aug/36_034_24aug2019_gwb.lta
10. LogFlag File : /odisk/online1/logflags/36_034.FLAGS.5

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+12 dB, 32 MHz,ON, IF-CH2 : 4+12 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 : 8.053 Sec
31. No of Antennas Working(Fringing) at the beginning :25

32. Name of Non-Working Antennas (with reason for each) :
C12 : Low fringe.
E04 : OFC cut.
E05 : OFC cut.
E06 : OFC cut.
W03 : Phase and Amplitude variation.


33. Note for Backup :

34. Start and End Time of Obs.(IST): 24 Aug 2019 05:00:00 - 24 Aug 2019 11:07:00

35. ONLINE Machine : Shivneri

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

37. RFI Status :

38. 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  	: 4096
GPU_CHAN_NUM  	: 0:4095:1
GPU_STOKES  	: Total_Intensity
GPU_SIDEBAND  	: 1 1
GPU_RF4  	: 550  550
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: -1 -1
GCODE4  	: 36_034
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  	: 128
GPU_GAINEQ  	: OFF
GPU_TPA  	: From GWB GUI.
GPU_BITS  	: 4 Bits
GPU_FILRFI  	: RFI Filterring OFF
GPU_BEAM_S  	: OFF
--------------------------------------------------------------------------
05:00 : Started scan on 3C48 for 15 min. 
05:20 : Started command file.

10:18 : C10-175pol fringe vanished.
10:49 : Stopped command file.

10:51 : C01 applied elevation brakes.

10:56 : Started scan on 3C286.
11:04 : C01 started working.
11:07 : Stopped scan and observing session over.