GTAC Observation Log

1. Date : 10/08/2020
2. Observation Sr. No. : 12291
3. Observer : Sarrvesh SeethapuramSridhar, Cathy Horellou, Krzysztof Chyży, Julia Piotrowska, Volker Heesen, Ralf Juergen Dettmar, George Heald
4. Observer\'s Email : sarrvesh.ss@gmail.com, Cathy.Horellou@chalmers.se, krzysztof.chyzy@uj.edu.pl, inz.julia.piotrowska@student.uj.edu.pl, v.heesen@soton.ac.uk, dettmar@astro.rub.de, george.heald@csiro.au
5. Project Name : Magnetizing the universe with dwarf galaxies: a new low-frequency radio continuum perspective
6. Project Code : 38_006
7. Operator(s) : Manisha, Rupsing, Shriram
8. Command File : /odisk/gtac/cmd/38_006/obs_10aug_1.cmd,/odisk/gtac/cmd/38_006/obs_10aug_2.cmd
9. LTA File : /gsbifrdata1/10aug/38_006_10aug2020_gsb.lta.1, /gsbifrdata1/10aug/38_006_10aug2020_gsb.lta, /gwbifrdata1/10aug/38_006_10aug2020_gwb.lta
10. LogFlag File : /odisk/online1/logflags/38_006.FLAGS.5, /odisk/online1/logflags/38_006.FLAGS.4, /odisk/online1/logflags/38_006.FLAGS.3, /odisk/online1/logflags/38_006.FLAGS.2

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 : Full_Stokes
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 : 8.053 Sec
31. No of Antennas Working(Fringing) at the beginning :28

32. Name of Non-Working Antennas (with reason for each) :
C03 : Mechanical Work
S03 : Mechanical Maint.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 10 Aug 2020 10:00:00 - 10 Aug 2020 18:05:00

35. ONLINE Machine : Shivneri

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

37. RFI Status :RFI Lines @ Channel :1460 to 1490
RFI Lines @ Channel : 1680 to 1720

38. Comments (During Observations) :

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 4
GPU_ACQ_BW  	: 400.0000
GPU_FINAL_BW  	: 400.0000
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 2048
GPU_CHAN_NUM  	: 0:2047:1
GPU_STOKES  	: Full_Stokes
GPU_SIDEBAND  	: 1 1
GPU_RF4  	: 550  550
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: -1 -1
GCODE4  	: 38_006
GPU_CNTRL  	: ONLINE
GPU_FSTOP  	: ON
GPU_BEAM_1  	: OFF
GPU_BEAM_2  	: OFF
GPU_BEAM_3  	: OFF
GPU_BEAM_4  	: OFF
GPU_BM_INT  	: 128
GPU_GAINEQ  	: OFF
GPU_TPA  	: From GWB GUI.
GPU_BITS  	: 4 Bits
GPU_FILRFI  	: RFI Filterring OFF
GPU_BEAM_S  	: OFF
--------------------------------
09:50 : started setup.
10:00 : command file obs_10aug_1.cmd started.

10:32 : S02 taken for maint work.
10:40 : S03 taken for Mech Maint work.
11:30 : S02 released for observation.

11:40 : command file obs_10aug_2.cmd started.

13:55 to 14:48 : observation time lost.

14:40 : found that oper2 machine, observer account has been logged out @ 13:55, so GSB was halted. Restarted GSB.

14:48 : restarted command file.
-----------------------------------------------------------------------
15:00 : C04 175 pol no self in GWB.
-----------------------------------------------------------------------
17:42 : Stopped command file.
17:44 : Started scan on 3C295 ~5min.
17:51 : Started scan on 3C286.
18:02 : Stopped scan and observing session over.