GTAC Observation Log

1. Date : 27/05/2023
2. Observation Sr. No. : 15447
3. Observer : harish k vedantham, Sanne Bloot
4. Observer\'s Email : vedantham@astron.nl, bloot@astron.nl
5. Project Name : A volume limited survey of the coldest brown dwarfs- a bridge to exoplanet magnetism
6. Project Code : 44_108
7. Operator(s) : Deepak, Sachin, Shilpa
8. Command File : /data1/gtac/cmd/44_108/44_108_27May2023_0900_cmd.py
9. LTA File : /gsbifrdata/27may/44_108_27may2023_b4_gsb.lta.1, /gsbifrdata/27may/44_108_27may2023_b4_gsb.lta, /gwbifrdata/27may/44_108_27may2023_b4_gwb.lta, /gwbifrdata1/27may/44_108_27may2023_b4_gwb.lta
10. LogFlag File :    

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 : TGC
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) : 591 591 540 540 51 51
30. Integration Time : 2.0132 Sec
31. No of Antennas Working(Fringing) at the beginning :30

32. Name of Non-Working Antennas (with reason for each) :
C04 : No fringe in GSB.
 

33. Note for Backup :

34. Start and End Time of Obs.(IST): 27 May 2023 08:35:00 - 27 May 2023 15:10:00

35. ONLINE Machine : TGC

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

37. RFI Status :

38. Comments (During Observations) :
******************************************************************* 
Important Note for Observer:
The refurbishment work of the W02 antenna reflector surface is 
currently in progress. The refurbishment of the inner sectors 
will commence from 16th May 2023 onwards. Please note that this 
ongoing work may affect the sensitivity of the antenna and could 
also alter the primary beam pattern depending on the size of the
holes present on the surface. We advise exercising caution in 
using the antenna, particularly if your targets are extended or 
if you are using a wide field. 
******************************************************************* 

		
------------GWB Setting---------------------------------------------------
GPU_MODE  	: Realtime
GPU_LTA  	: 4
GPU_ACQ_BW  	: 400.0000
GPU_FINAL_BW  	: 400
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 4096
GPU_CHAN_NUM  	: 0:4095:1
GPU_STOKES  	: Full_Stokes
GPU_SIDEBAND  	: 1 1
GPU_RF4  	: 550  550
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: 1 1
GCODE4  	: 44_108
GPU_CNTRL  	: TGC
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 online/TGC tpa
GPU_BITS  	: 4 Bits
GPU_FILRFI  	: RFI Filterring OFF
GPU_BEAM_S  	: OFF
GPU_PFB  	: ON
GPU_PFB_TAPS  	: 4
GPU_BEAM_BIT  	: 16
GPU_VLT_BIT  	: 8
GPU_WALSH  	: OFF
GPU_ENV  	: RELEASED
--------------------------------------------------------------------------
08:35 : Started settings.
09:00 : \'/data1/gtac/cmd/44_108/44_108_27May2023_0900_cmd.py\' command file started.
09:25 : W02 taken for surface refurbishment work.
09:50 : C04 taken for callsheet work.
10:40 : S01 taken for maintenance.

12:15 : GWB ACQ got killed.
12:17 : Halted GSB and GWB.
12:20 : Restarted GSB and GWB.

12:27 : Restarted command file.
12:30 : S01 released and started working.
15:10 : Stopped command file and observing session over.