GTAC Observation Log

1. Date : 19/01/2023
2. Observation Sr. No. : 15028
3. Observer : Poonam Chandra, James Leung, Luca Izzo, Harsh Kumar, Tara Murphy, Shriharsh P. Tendulkar, Varun Bhalerao
4. Observer\'s Email : pchandra@nrao.edu, jleu9465@uni.sydney.edu.au, luca.izzo@gmail.com, harshkosli13@gmail.com, tara.murphy@sydney.edu.au, shriharsh.tendulkar@tifr.res.in, varunb@iitb.ac.in
5. Project Name : Lowest frequency observations of the brightest gamma-ray burst ever: A case for joint uGMRT and ASKAP observations
6. Project Code : ddtC251
7. Operator(s) : Nilesh, Pramod, Sachin, Shilpa, Surender
8. Command File : /odisk/gtac/cmd/ddtc251/ddtc251_15Jan2023_1400_cmd.py
9. LTA File : /gsbifrdata1/15jan/ddtc251_15jan2023_gsb.lta.1, /gwbifrdata2/15jan/ddtc251_15jan2023_gwb.lta.1
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/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 : 512
26. Channel Numbers : 0:511:1
27. LO5 -1  : 149
28. LO5 -2  : 156

29. Frequency Parameters (TPA) : 591 591 540 540 51 51
30. Integration Time : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :28

32. Name of Non-Working Antennas (with reason for each) :
S01 : Taken for mechanical work
C05 : Feed jammed
33. Note for Backup :

34. Start and End Time of Obs.(IST): 15 Jan 2023 14:00:00 - 15 Jan 2023 16:00:00

35. ONLINE Machine : TGC

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

37. RFI Status :

38. Comments (During Observations) :
------------GWB Setting---------------------------------------------------
GPU_MODE       : Realtime
GPU_LTA        : 4
GPU_ACQ_BW     : 400.0000
GPU_FINAL_BW   : 400
GPU_EDGE_FRQ   : 0
GPU_CHAN_MAX   : 2048
GPU_CHAN_NUM   : 0:2047:1
GPU_STOKES     : Total_Intensity
GPU_SIDEBAND   : 1 1
GPU_RF4        : 550 550
GPU_DDCLO4     : 0.0000  0.0000
GPU_SB4        : 1 1
GCODE4         : DDTC251
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 online/TGC tpa
GPU_BITS       : 4 Bits
GPU_FILRFI     : Voltage Detection
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


------GWB RFI Filter Setting----------------------------------------------
FILTERED_SIGNALS : RFI_ALL # RFI_ALL=All signals filtered / RFI_CH1 =Channel 1 only / RFI_CH2=Channel 2 only
EXTERNAL MEDIAN : 0 # integer value(-128 to 127)
THRESHOLD VALUE : 4 # integer value(0 to 127)
CONSTANT VALUE : 0 # integer value(-128 to 127)
FILTERING OPTION : DIGITAL NOISE # BYPASS / CONSTANT=constant value is used / THRESHOLD / DIGITAL_NOISE
DDC_STATUS : OFF # DDC = ON/OFF
--------------------------------
14:00 : Started set up.
14:18 : Started command file.
        \'/odisk/gtac/cmd/ddtc251/ddtc251_15Jan2023_1400_cmd.py\'
15:10 : E06 Servo Problem.
14:51 : S01 started working.
16:10 : Stopped command file and observing session over.
--------------------------------