GTAC Observation Log

1. Date : 14/02/2021
2. Observation Sr. No. : 12903
3. Observer : Raya Dastidar, Resmi Lekshmi, Kuntal Misra, Yogesh Maan, Jason WilliamThomas Hessels, Ankur Ghosh
4. Observer\'s Email : rdastidr@gmail.com, l.resmi@gmail.com, kuntal@aries.res.in, maan@astron.nl, hessels@astron.nl, ankur@aries.res.in
5. Project Name : Understanding the connection between fast radio bursts and superluminous supernovae.
6. Project Code : 39_083
7. Operator(s) : Shriram
8. Command File : /data1/gtac/cmd/39_083/obs3.py
9. LTA File : /gsbifrdata1/14feb/39_083_14feb2021_gsb.lta, /gwbifrdata1/14feb/39_083_14feb2021_gwb.lta
10. LogFlag File :   

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1409 MHz ,RF2 : 1409 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1460 MHz, ILO2 : 1460MHz , 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 : 256
26. Channel Numbers : 0:255:1
27. LO5 -1  : 149
28. LO5 -2  : 156

29. Frequency Parameters (TPA) : 1409 1409 1460 1460 51 51
30. Integration Time : 8.053 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): 14 Feb 2021 18:50:00 - 14 Feb 2021 23:10:00

35. ONLINE Machine : TGC

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

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  	: 4096
GPU_CHAN_NUM  	: 0:4095:1
GPU_STOKES  	: Total_Intensity
GPU_SIDEBAND  	: 1 1
GPU_RF4  	: 1460  1460
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: 1 1
GCODE4  	: 39_083
GPU_CNTRL  	: ONLINE/TGC
GPU_FSTOP  	: ON
GPU_BEAM_1  	: PA
GPU_BEAM_2  	: OFF
GPU_BEAM_3  	: OFF
GPU_BEAM_4  	: OFF
GPU_BM_INT  	: 32
GPU_GAINEQ  	: ON
GPU_TPA  	: From online/TGC tpa
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
--------------------------------
# GWB GAC configuration is as follows : 
# BEAM-1:130 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 S01 S02 W01 W02 Total=19
# BEAM-1:175 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 S01 S02 W01 W02 Total=19

------------------------------------------------------------------

18:50 : Started settings.
19:15 : Power equalized on 3C147
------------------------------------------------------------------
Flux calibrator provided in setup by user was not up. Tried to contact user. After discussion with GMRT operations. 0815+365 used for phasing.
------------------------------------------------------------------------ 
19:16:57 : Started scan on 0815+365 for ~ 2.23696 min.
19:19:40 : Started scan on 0815+365 for ~ 1.16322 min.
19:21:19 : Started scan on 0815+365 for ~ 3.48966 min.
------------------------------------------------------------------------
Phasing not done properly on 0815+365.
After discussing with GMRT operations 3C147 used as Flux and phase calibrator for first iteration.
------------------------------------------------------------------------
19:25 : Started command file,
       \'/data1/gtac/cmd/39_083/obs3.py\' 
21:56- 22:08 : Very strong broadband RFI observed.

23:10 : Stopped command file and observation closed.