GTAC Observation Log

1. Date : 14/02/2024
2. Observation Sr. No. : 16386
3. Observer : Balpreet Kaur, Nissim Kanekar, Aditya Chowdhury, Jayaram Narayanan Chengalur
4. Observer\'s Email : bkaur@ncra.tifr.res.in, nkanekar@ncra.tifr.res.in, chowdhury@ncra.tifr.res.in, chengalur@ncra.tifr.res.in
5. Project Name : Confirming the detections of HI 21cm absorption towards radio-loud AGNs in the COSMOS field
6. Project Code : 45_131
7. Operator(s) : Navnath, Rupsing
8. Command File : /data1/gtac/cmd/45_131/45_131_13Feb2024_2000_cmd.py
9. LTA File : /gsbifrdata/13feb/45_131_13feb2024_b4_gsb.lta.2, /gwbifrdata2/13feb/45_131_13feb2024_b4_gwb.lta, /gsbifrdata/14feb/45_131_14feb2024_b4_gsb.lta, /gwbifrdata2/14feb/45_131_14feb2024_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+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/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) : 591 591 540 540 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) :
S03 : Strong RFI lines.
33. Note for Backup :

34. Start and End Time of Obs.(IST): 13 Feb 2024 20:00:00 - 14 Feb 2024 05:12:00

35. ONLINE Machine : TGC

36. No of Antennas Working(Fringing) at the end :29

37. RFI Status :

38. Comments (During Observations) :

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 8
GPU_ACQ_BW  	: 100
GPU_FINAL_BW  	: 50
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 16384
GPU_CHAN_NUM  	: 0:16383:1
GPU_STOKES  	: Total_Intensity
GPU_SIDEBAND  	: 1 1
GPU_RF4  	: 550 550
GPU_DDCLO4  	: 29.000000  29.000000
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
-----------------------------------------------------------------------
20:18 : Started command file.
-----------------------------------------------------------------------
20:25 : Stopped command file due to wrong DDC LO(79MHz)
20:30 : New DDC LO 29MHz instead of 79MHz.
-----------------------------------------------------------------------
20:34 : Restarted command file.
01:18:30 : Started scan on 0943-083 for ~ 5.10027 min.
01:25:00 : cmd file stopped.
------------------------------------------------
01:34:48 : Started scan on 3C286 for ~ 6.17401 min.
01:47:01 : Started scan on 0943-083 for ~ 5.10027 min.
01:53:15 : Started scan on 0943-083 for ~ 39.1915 min.
         :# bad scan ..phase center was not matching.
02:33:31 : Started scan on 0943-083 for ~ 5.23449 min.
02:40:10 : Started scan on J1001+0205 for ~ 39.1915 min.
03:20:50 : Started scan on 0943-083 for ~ 5.10027 min.
03:27:54 : Started scan on J1001+0205 for ~ 39.1915 min.
04:08:30 : Started scan on 0943-083 for ~ 5.23449 min.
04:15:07 : Started scan on J1001+0205 for ~ 39.1915 min.
04:55:42 : Started scan on 0943-083 for ~ 5.10027 min.
05:06:41 : Started scan on 3C286 for ~ 5.77136 min.
05:12:00 : Observation session closed.
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