GTAC Observation Log

1. Date : 30/05/2023
2. Observation Sr. No. : 15456
3. Observer : Lankeswar Dey, Apurba Bera, Gopakumar Achamveedu, Preeti Kharb, Avinash Kumar Kumar Paladi, Smita Mathur, Di Li, Maura Ann McLaughlin, Sarah Burke-Spolaor
4. Observer\'s Email : lanky441@gmail.com, apurba@ncra.tifr.res.in, gopu.tifr@gmail.com, preeti.kharb@gmail.com, avinashkumarpaladi@gmail.com, smita@astronomy.ohio-state.edu, ithaca.li@gmail.com, maura.mclaughlin@mail.wvu.edu, sarahbspolaor@gmail.com
5. Project Name : HI imaging of the host galaxy of a pre-coalescence SMBH binary candidate
6. Project Code : 44_062
7. Operator(s) : Nilesh, Surender
8. Command File : /data1/gtac/cmd/44_062/44_062_29May2023_1900_cmd.py
9. LTA File : /gsbifrdata/29may/44_062_29may2023_b5_gsb.lta, /gwbifrdata/29may/44_062_29may2023_b5_gwb.lta
10. LogFlag File :  

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1281 MHz ,RF2 : 1281 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1230 MHz, ILO2 : 1230MHz , 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/TGC
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) : 1281 1281 1230 1230 51 51
30. Integration Time : 8.053 Sec
31. No of Antennas Working(Fringing) at the beginning :29

32. Name of Non-Working Antennas (with reason for each) :
W04 : Servo problem.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 29 May 2023 19:00:00 - 30 May 2023 03:00:00

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. 
******************************************************************* 


18:35 : South Arm Wind Speed going beyond 40 KMPH.
18:50 : Central SQuare, S-arm and E-arm Wind beyond 50 KMPH.
18:55 : ANTENNAS are parked due to High WIND SPEED.

19:00 : Started settings.

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 4
GPU_ACQ_BW  	: 100
GPU_FINAL_BW  	: 50
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 4096
GPU_CHAN_NUM  	: 0:4095:1
GPU_STOKES  	: Total_Intensity
GPU_SIDEBAND  	: -1 -1
GPU_RF4  	: 1340.0  1340.0
GPU_DDCLO4  	: 0.000000  0.000000
GPU_SB4  	: -1 -1
GCODE4  	: SUBA4
GPU_CNTRL  	: ONLINE/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  	: 8 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
--------------------------------

20:15 : 15 min average wind Speed below threshold. 
        Antennas put into tracking and restarted settings.

20:28 : Started command file.
         /data1/gtac/cmd/44_062/44_062_29May2023_1900_cmd.py

21:39 : W06 LMC down (ABC time out).
22:20 : W04 LMC down (ABC time out).

03:21 : Stopped cmd file and observing session over.
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