GTAC Observation Log

1. Date : 18/05/2021
2. Observation Sr. No. : 13097
3. Observer : Jayanta Roy, Nissim Kanekar, Aditya Chowdhury
4. Observer\'s Email : jroy@ncra.tifr.res.in, nkanekar@ncra.tifr.res.in, chowdhury@ncra.tifr.res.in
5. Project Name : Localizing a very bright Fast Radio Burst with the uGMRT
6. Project Code : ddtC171
7. Operator(s) : Pramod, Shriram
8. Command File : /data1/gtac/cmd/ddtc171/obs.py
9. LTA File : /gwbifrdata/18may/ddtc171_band5_18may2021_gwb.lta, /gwbifrdata1/18may/ddtc171_band4_18may2021_gwb.lta
10. LogFlag File :  

ANTENNA SETTINGS :

11. RF Band(MHz) & Solar Attn(dB)- RF1 : 602 MHz ,RF2 : 602 MHz, SA1 : 0 dB, SA2 : 0 dB
12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 540 MHz, ILO2 : 540MHz , IVLO1 : 62 MHz, IVLO2 : 62 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) : 602 602 540 540 62 62
30. Integration Time : 2.0132 Sec
31. No of Antennas Working(Fringing) at the beginning :20

32. Name of Non-Working Antennas (with reason for each) :
C03 : : Mechanical Work.
C04 : : Stow not released.
C06 : : Stow not released.
W04 : : Stow not released.
C14 : : GAB not set
S04 : : GAB not set
E02 : : 175 pol no fringe.
E06 : : LMC down.
S01 : : Feed not rotated
C05 : : Feed not rotated

33. Note for Backup :

34. Start and End Time of Obs.(IST): 18 May 2021 09:00:00 - 18 May 2021 13:10:00

35. ONLINE Machine : TGC

36. No of Antennas Working(Fringing) at the end :24

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  	: 8192
GPU_CHAN_NUM  	: 0:8191:1
GPU_STOKES  	: Total_Intensity
GPU_SIDEBAND  	: 1 1
GPU_RF3  	: 550  550
GPU_DDCLO3  	: 0.000000  0.000000
GPU_SB3  	: 1 1
GCODE3  	: DDTC171A
GPU_RF4  	: 1460  1460
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: 1 1
GCODE4  	: DDTC171
GPU_CNTRL  	: ONLINE/TGC
GPU_FSTOP  	: ON
GPU_BEAM_1  	: IA
GPU_BEAM_2  	: PA
GPU_BEAM_3  	: IA
GPU_BEAM_4  	: PA
GPU_BM_INT  	: 16
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  	: 8
GPU_VLT_BIT  	: 8
GPU_ENV  	: TRIAL
--------------------------------
# GWB GAC configuration is as follows : 
# BEAM-1:130 :: C00 C01 C02 C04 C10 C11 E03 S01 S03 W01 W03 Total=11
# BEAM-1:175 :: C00 C01 C02 C04 C10 C11 E03 S01 S03 W01 W03 Total=11
# BEAM-2:130 :: C00 C01 C02 C04 C10 C11 E03 S01 S03 W01 W03 Total=11
# BEAM-2:175 :: C00 C01 C02 C04 C10 C11 E03 S01 S03 W01 W03 Total=11
# BEAM-3:130 :: C05 C08 C09 C12 C13 E04 E05 S02 S06 W02 W04 W05 W06 Total=13
# BEAM-3:175 :: C05 C08 C09 C12 C13 E04 E05 S02 S06 W02 W04 W05 W06 Total=13
# BEAM-4:130 :: C05 C08 C09 C12 C13 E04 E05 S02 S06 W02 W04 W05 W06 Total=13
# BEAM-4:175 :: C05 C08 C09 C12 C13 E04 E05 S02 S06 W02 W04 W05 W06 Total=13

--------------------------------------------------------------------------
08:45- 09:30 : Pointing at band 5.
09:30- 11:30 : Tried to get antennas back
10:45 : C05 released for observation
11:00 : S01 feed rotated. 
11:30 : C04 and W04 released for observation.
11:30 : Started setup for GSB.
11:45 : GSB power equalized and halted.
11:55 : GWB power equalized and phasing done. 
-------------------------------------------------------------------------
Note : observation extend in white slot due to multiple problems.
-------------------------------------------------------------------------
12:00 : Command file started,
       \'/data1/gtac/cmd/ddtc171/obs.py\'
13:07 : Stopped command file and observation session is over.