GTAC Observation Log

1. Date : 09/10/2020
2. Observation Sr. No. : 12503
3. Observer : Nithyanandan Thyagarajan, Nissim Kanekar, Gianni Bernardi
4. Observer\'s Email : t_nithyanandan@nrao.edu, nkanekar@ncra.tifr.res.in, giannibernardi75@gmail.com
5. Project Name : %latex% The low-frequency radio properties of quasars at  $z\\\\\\\\ge 6$
6. Project Code : 38_056
7. Operator(s) : Nilesh, Pramod, Shilpa, Shriram, Surender
8. Command File : /data1/gtac/cmd/38_056/obs.py
9. LTA File : /gsbifrdata1/08oct/38_056_08oct2020_gsb.lta.2, /gsbifrdata1/08oct/38_056_08oct2020_gsb.lta, /gwbifrdata2/08oct/38_056_08oct2020_gwb.lta.2, /gwbifrdata2/08oct/38_056_08oct2020_gwb.lta
10. LogFlag File :  

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 311 MHz ,RF2 : 311 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 260 MHz, ILO2 : 260MHz , 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) : 311 311 260 260 51 51
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :27

32. Name of Non-Working Antennas (with reason for each) :
C03 : Mechanical Work.
W04 : LMC problem.
C14 : MCM-5 time-out.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 08 Oct 2020 21:00:00 - 09 Oct 2020 07:00:00

35. ONLINE Machine : TGC

36. No of Antennas Working(Fringing) at the end :26

37. RFI Status :

38. Comments (During Observations) :
gsb_beam2_dataserver,node_34
bandmask,3
gpu_beam4_dataserver,gwbh10
GSB_LTA,8
GPU_FSTOP,1
GPU_PFB,0
GPU_FILRFI,0
GSB_CHAN_NUM,0:511:1
GSB_ACQ_BW,33.333333
GPU_BEAM_1,0:1
GSB_FINAL_BW,0
GPU_PFB_TAPS,16
GSB_ENV,1
gpu_ifr_dataserver,gwbh6
gpu_beam3_dataserver,gwbh9
GPU_CHAN_NUM,0:2047:1
GSB_HOSTS,0
GPU_BEAM_S,0
gsb_ifr_dataserver,gsbm4
GSB_STOKES,2
GPU_DDC,0
GSB_CNTRL,1
GPU_CNTRL,1
gpu_beam2_dataserver,gwbh8
GPU_GAINEQ,1
gsb_beam1_dataserver,node_33
GPU_EDGE_FRQ,0
GSB_BEAM_1,0:1
GPU_BM_INT,8
GSB_BEAM_2,0:1
GPU_BEAM_3,0:1
GPU_BEAM_2,0:4
GSB_FSTOP,1
GPU_CHAN_MAX,2048
GPU_BEAM_4,0:4
corrmask,8
GPU_ENV,1
antennamask,3fffffff
GPU_HOSTS,2
GPU_MODE,0
GPU_STOKES,2
GSB_GAINEQ,1
GSB_CD_MODE,0
GSB_CHAN_MAX,512
GPU_TPA,0
GPU_ACQ_BW,200.0000
GPU_LTA,4
GSB_BB_LO,149000000.0:156000000.0
GSB_MODE,0
GPU_FINAL_BW,1
gpu_beam1_dataserver,gwbh7
GPU_BITS,8
--------------------------------------------------------------------------
20:30:14 : Started scan on 3C48 for ~ 22.0117 min.
20:46:00 : CMC restarted by TGC Team during the observation so correlator owner ship was changed to Operator station 0.
--------------------------------------------------------------------------
20:54:52 : Started scan on 3C48 for ~ 2.95279 min.
21:07:05 : Started command file started.                                /data1/gtac/cmd/38_056/obs.py
--------------------------------------------------------------------------
From 21:28 to 22:40 : GSB and GWB command file authorization failed in TGC, after permission from TGC team restarted correlator.
--------------------------------------------------------------------------
22:40:04 : Restarted command file.
           /data1/gtac/cmd/38_056/obs.py

23:00:00 : S04 not tracking properly.
03:30:00 : Source phase cal 2325-121 set for last scan hence skipped.

07:45:00 : Stopped command file.
08:02:00 : Closed observations after a scan on Flux cal for ~ 8 min.