GTAC Observation Log

1. Date : 06/09/2020
2. Observation Sr. No. : 12383
3. Observer : Poonam Chandra, Ayan Biswas, Barnali Das
4. Observer\'s Email : poonam@ncra.tifr.res.in, ayan.scc2@gmail.com, barnali@ncra.tifr.res.in
5. Project Name : Uncovering the intriguing nature of the double O-O binary system Plaskett`s star
6. Project Code : 38_102
7. Operator(s) : Deepak, Nilesh, Sachin
8. Command File : /odisk/gtac/cmd/poonam/06sep20.cmd
9. LTA File : /gsbifrdata1/06sep/38_102b_06sep2020_band4_gsb.lta, /gsbifrdata1/06sep/38_102a_06sep2020_band5_gsb.lta, /gwbifrdata1/06sep/38_102b_06sep2020_band4_gwb.lta, /gwbifrdata1/06sep/38_102a_06sep2020_band5_gwb.lta
10. LogFlag File : /odisk/online1/logflags/38_102B.FLAGS.9, /odisk/online1/logflags/38_102A.FLAGS.9

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1409 MHz ,RF2 : 1409 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1460 MHz, ILO2 : 1460MHz , 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) : 1409 1409 1460 1460 51 51
30. Integration Time : 4.0265 Sec
31. No of Antennas Working(Fringing) at the beginning :24

32. Name of Non-Working Antennas (with reason for each) :
C03 : Mechanical Work.
E06 : ABC time out.
C14 : CH-1 Low fringe GWB.
S02 : Low Fringe.
S04 : FPS problem.
W03 : FPS problem.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 06 Sep 2020 03:00:00 - 06 Sep 2020 08:20:00

35. ONLINE Machine : Shivneri

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

37. RFI Status :

38. Comments (During Observations) :
03:00 : Started settings.

------------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  	: Full_Stokes
GPU_SIDEBAND  	: 1 1
GPU_RF3  	: 550  550
GPU_DDCLO3  	: 0.0000  0.0000
GPU_SB3  	: -1 -1
GCODE3  	: 38_102B
GPU_RF4  	: 1460  1460
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: 1 1
GCODE4  	: 38_102A
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  	: OFF
GPU_TPA  	: From GWB GUI.
GPU_BITS  	: 4 Bits
GPU_FILRFI  	: RFI Filterring OFF
GPU_BEAM_S  	: OFF
--------------------------------

BAND4 SETTINGS for SUBAR 3 :

# sub 3 # C01 C05 C08 C10 C11 C13 W02 W03 W04 W06 E02 E04 E06 S01 S06 
ante 15 6 19 24 12 9 11 13 14 15 25 17 21 23 26 30 
cp 0;defs 3;subar 3

GSB TPA 591 591 540 540 51 51 


BAND5 SETTINGS for SUBAR 4 :

# sub 4 # C00 C02 C03 C04 C06 C09 C12 C14 W01 W05 E03 E05 S02 S03 S04 
ante 15 7 5 1 3 20 4 2 10 8 16 18 22 27 28 29 
cp 0;defs 4;subar 4

GSB TPA 1409 1409 1460 1460 51 51 


03:21:12 : Started scan on 3C147 for ~ 10.1334 min.
03:35:00 : Started command file.
             /odisk/gtac/cmd/poonam/06sep20.cmd

04:00 : W03 started working, Feed Focused after various tries.
08:00 : Stopped command file started scan on 3C147.
08:15 : Stopped scan on 3C147 and closed observation session.