GTAC Observation Log

1. Date : 26/12/2020
2. Observation Sr. No. : 12725
3. Observer : harish k vedantham, Joseph Russell Callingham, Shimwell
4. Observer\'s Email : vedantham@astron.nl, callingham@astron.nl, shimwell@astron.nl
5. Project Name : Unravelling the first radio-selected brown dwarf
6. Project Code : ddtC153
7. Operator(s) : Deepak, Nilesh, Shriram
8. Command File : /data1/gtac/cmd/ddtc153/26dec2020/obs_26dec.py
9. LTA File : /gsbifrdata1/26dec/ddtc153_26dec2020_b4_gsb.lta, /gwbifrdata2/26dec/ddtc153_26dec2020_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 : 2.0132 Sec
31. No of Antennas Working(Fringing) at the beginning :29

32. Name of Non-Working Antennas (with reason for each) :
C03 : Mechanical Work.


33. Note for Backup :

34. Start and End Time of Obs.(IST): 26 Dec 2020 11:00:00 - 26 Dec 2020 17:10:00

35. ONLINE Machine : TGC

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

37. RFI Status :

38. Comments (During Observations) :
--------GSB settings-----
GSB_CHAN_NUM,0:255:1
GSB_ACQ_BW,33.333333
GSB_FINAL_BW,0
GSB_ENV,1
GSB_STOKES,4
GSB_CNTRL,1
GSB_BEAM_1,0:1
GSB_BEAM_2,0:1
GSB_GAINEQ,1
GSB_BB_LO,149000000:156000000
GSB_LTA,8
GSB_HOSTS,0
GSB_FSTOP,1
GSB_EDGE_FRQ,0
GSB_CD_MODE,0
GSB_CHAN_MAX,256
GSB_MODE,0
-----------------GWB Settings---------------
GPU_CHAN_NUM,0:2047:1
GPU_BEAM_S,0
GPU_EDGE_FRQ,0
GPU_BEAM_3,0:1
GPU_BEAM_2,0:1
GPU_BEAM_1,0:1
GPU_BEAM_4,0:1
GPU_FINAL_BW,1
GPU_VLT_BIT,8
GPU_FSTOP,1
GPU_FILRFI,0
GPU_BM_INT,8
GPU_DDC,0
GPU_CNTRL,1
GPU_GAINEQ,1
GPU_LTA,4
GPU_CHAN_MAX,2048
GPU_ENV,1
GPU_HOSTS,2
GPU_MODE,0
GPU_STOKES,4
GPU_TPA,0
GPU_ACQ_BW,400.0000
---------------------------------------------------------------------
11:34 : Started scan on 3C286 for ~ 8.6794 min.
11:45 : Started command file,
        \'/data1/gtac/cmd/ddtc153/26dec2020/obs_26dec.py\'.

16:47 : Stopped command file.
16:56 : Started scan on 3C48 for ~ 9 min.
17:10 : Stopped scan and observation over.