GTAC Observation Log

1. Date : 21/11/2020
2. Observation Sr. No. : 12593
3. Observer : Ramij Raja, Majidul Rahaman, Abhirup Datta
4. Observer\'s Email : phd1601121008@iiti.ac.in, phd1601121007@iiti.ac.in, Abhirup.Datta@iiti.ac.in
5. Project Name : Investigating the origin of diffuse radio phoenices with the deep uGMRT observations
6. Project Code : 39_104
7. Operator(s) : Deepak, Nilesh, Surender
8. Command File : /data1/gtac/cmd/39_104/obs.py
9. LTA File : /gsbifrdata1/20nov/39_104_20nov2020_band4_gsb.lta.1, /gsbifrdata1/20nov/39_104_20nov2020_band4_gsb.lta, /gwbifrdata/20nov/39_104_20nov2020_band4_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 : 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 : 4.0265 Sec
31. No of Antennas Working(Fringing) at the beginning :27

32. Name of Non-Working Antennas (with reason for each) :
C03 : Mechanical Work.
W05 : FPS problem.
C01 : Servo problem.
33. Note for Backup :

34. Start and End Time of Obs.(IST): 20 Nov 2020 17:00:00 - 21 Nov 2020 03:00:00

35. ONLINE Machine : TGC

36. No of Antennas Working(Fringing) at the end :27

37. RFI Status :

38. Comments (During Observations) :
17:00 : Started settings.

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 8
GPU_ACQ_BW  	: 400.0000
GPU_FINAL_BW  	: 400.0000
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 8192
GPU_CHAN_NUM  	: 0:8191:1
GPU_STOKES  	: Full_Stokes
GPU_SIDEBAND  	: 1 1
GPU_RF4  	: 550  550
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: -1 -1
GCODE4  	: 39_104
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 TGC GUI.
GPU_BITS  	: 4 Bits
GPU_FILRFI  	: RFI Filterring OFF
GPU_BEAM_S  	: OFF
GPU_PFB  	: OFF
GPU_PFB_TAPS  	: 16
GPU_BEAM_BIT  	: 16
GPU_VLT_BIT  	: 8
GPU_ENV  	: RELEASED
--------------------------------

17:35:56 : Started scan on 3C48 for ~ 8.76888 min.

18:00:30 : ELECTRICAL POWER FAILURE FOR ALL antennas, including CEB.

18:02:13 : Started scan on J0054-0333 for ~ 22.1012 min. 
  NOTE :THIS SCAN ON PHASE CAL is BAD DUE TO ELECTRICAL POWER FAILURE.
        TGC in hanged mode due to C01 and W01 antennas time out.
        We wait for ~ 20 minutes, then restarted AGN1.

18:29:00 : Started command file.
           /data1/gtac/cmd/39_104/obs.py

18:30:00 : W01 : ABC time out (LMC down) after power failure.
           W06 : Servo problem, Not releasing brakes.


21:06:00 : ELECTRICAL POWER RESUMED, Stopped command file.
21:18:00 : Re-started command file.
           /data1/gtac/cmd/39_104/obs.py

21:20 : W06 started working.
22:00 : W01 started working.

01:52:00 : Stopped command file due to source below horizon.
01:58:36 : Started scan on J0054-0333 for ~ 10.2005 min.
02:12:26 : Started scan on 3C48.
02:35:00 : Stopped scan and closed observation.
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