GTAC Observation Log

1. Date : 26/09/2023
2. Observation Sr. No. : 15933
3. Observer : harish k vedantham, Sanne Bloot
4. Observer\'s Email : vedantham@astron.nl, bloot@astron.nl
5. Project Name : A volume limited survey of the coldest brown dwarfs- a bridge to exoplanet magnetism
6. Project Code : 44_108
7. Operator(s) : Nilesh, Rupsing, Sachin, Surender
8. Command File : /data1/gtac/cmd/44_075/25Sep2023/44_075_25Sep2023_1600_cmd.py
9. LTA File : /gsbifrdata1/25sep/44_108_25sep2023_b4_gsb.lta, /gsbifrdata/26sep/44_108_26sep2023_b4_gsb.lta, /gwbifrdata1/25sep/44_108_25sep2023_b4_gwb.lta, /gwbifrdata2/26sep/44_108_26sep2023_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 : 4.0265 Sec
31. No of Antennas Working(Fringing) at the beginning :30

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


33. Note for Backup :

34. Start and End Time of Obs.(IST): 25 Sep 2023 20:00:00 - 26 Sep 2023 07:00:00

35. ONLINE Machine : TGC

36. No of Antennas Working(Fringing) at the end :30

37. RFI Status :

38. Comments (During Observations) :
20:00 : Started settings.

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 4
GPU_ACQ_BW  	: 400.0000
GPU_FINAL_BW  	: 400
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 4096
GPU_CHAN_NUM  	: 0:4095:1
GPU_STOKES  	: Full_Stokes
GPU_SIDEBAND  	: 1 1
GPU_RF4  	: 550 550
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: 1 1
GCODE4  	: 44_108
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  	: 4 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
--------------------------------
20:21 : Started command file.
         /data1/gtac/cmd/44_075/25Sep2023/44_075_25Sep2023_1600_cmd.py

02:07 : Stopped command file, 
        Started next command file for Make-up observations.
        Changed LTA data files.
          /data1/gtac/cmd/44_108/44_108_26Sep2023_0200_cmd_mkp.py

02:20 : Restarted command file.
06:36 : Source near ZENITH, stopped command file.
06:45 : Started scan on 3C147 for ~ 15 min.
07:00 : Stopped scan and observation over.