GTAC Observation Log

1. Date : 07/01/2019
2. Observation Sr. No. : 10789
3. Observer : Barnali Das, Poonam Chandra
4. Observer's Email : barnali@ncra.tifr.res.in, poonam@ncra.tifr.res.in
5. Project Name : Low frequency study of the two main sequence pulsars: CU Virginis and HD 133880
6. Project Code : 35_097
7. Operator(s) : Navnath, Nilesh, Pramod
8. Command File : /odisk/gtac/cmd/35_097/7_jan/obs.cmd
9. LTA File : /gsbifrdata1/07jan/35_097_07jan2019_gsb.lta, /gwbifrdata2/07jan/35_097_07jan2019_gwb.lta
10. LogFlag File : /odisk/online1/logflags/35_097.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 : 16.1061 Sec
31. No of Antennas Working(Fringing) at the beginning :28

32. Name of Non-Working Antennas (with reason for each) :
E03 : ABC/Servo time out.
W01 : Intermittent RFI, Low fringe.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 07 Jan 2019 03:35:00 - 07 Jan 2019 09:05:00

35. ONLINE Machine : Lenyadri

36. No of Antennas Working(Fringing) at the end :26

37. Comments (During Observations) :
03:35 : Started settings.

------------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  	: 35_097
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
--------------------------------

03:41 : Started command file with scan on 3C286 and 1407+284.
           /odisk/gtac/cmd/35_097/7_jan/obs.cmd
08:42:29 : Started scan on 1445+099 for ~ 4.96605 min.
08:51:37 : Started scan on 3C286 for ~ 11.0058 min.
08:46 : Electrical power failure to West arm antennas.

         C05 : applied brakes due to electrical power failure.
         W01 : Gen Set Not getting oN. Servo Brakes.
         W03 :  fringe vanished after power failure.
08:48 : cmd file stopped.
08:51 : Started scan on 3C286. 
09:03    : Observation session over.