GTAC Observation Log

1. Date : 08/02/2020
2. Observation Sr. No. : 11876
3. Observer : James McKee, BHAL CHANDRA JOSHI
4. Observer\'s Email : jamesmckee23@gmail.com, bcj@ncra.tifr.res.in
5. Project Name : Broadband Observations of Giant Pulses from the Millisecond Pulsars B1937\\\\+21 and B1957\\\\+20
6. Project Code : 37_004
7. Operator(s) : Deepak, Navnath, Pramod, Shilpa
8. Command File : /odisk/gtac/cmd
9. LTA File : /gsbifrdata1/08feb/37_004A_08feb2020_gsb_610.lta, /gwbifrdata1/08feb/37_004_08feb2020_band4_gwb.lta, /gwbifrdata1/08feb/37_004_08feb2020_band3_gwb.lta
10. LogFlag File : /odisk/online1/logflags/37_004B.FLAGS.4, /odisk/online1/logflags/37_004A.FLAGS.4

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,OFF, IF-CH2 : 4+14 dB, 32 MHz,OFF

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 : OFF
20. Stokes : Total_Intensity
21. Beam - 1 : OFF
22. Beam - 2 : Volt
23. ACQ BW : 16.666666 MHz
24. Final BW : 0 MHz; Step # 0
25. Maximum Channels : 256
26. Channel Numbers : 0:255:1
27. LO5 -1  : 138
28. LO5 -2  : 167

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 :29

32. Name of Non-Working Antennas (with reason for each) :
W03 : : Painting Work.
W02 :  Pol-1 Phase Jump.


33. Note for Backup :

34. Start and End Time of Obs.(IST): 08 Feb 2020 14:00:00 - 08 Feb 2020 16:30:00

35. ONLINE Machine : Shivneri

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

37. RFI Status :

38. Comments (During Observations) :
::::::::::::::
gsb_gac.dat
::::::::::::::
# GSB GAC configuration is as follows : 
# BEAM-1:130 :: C00 C04 C05 C10 C11 C13 E03 S01 S02 S03 Total=10
# BEAM-1:175 :: C00 C04 C05 C10 C11 C13 E03 S01 S02 S03 W02 Total=11
# BEAM-2:130 :: C00 C04 C05 C10 C11 C13 E03 S01 S02 S03 Total=10
# BEAM-2:175 :: C00 C04 C05 C10 C11 C13 E03 S01 S02 S03 W02 Total=11
::::::::::::::
gwb_gac.dat
::::::::::::::
# GWB GAC configuration is as follows : 
# BEAM-1:130 :: C00 C04 C05 C10 C11 C13 E03 S01 S02 S03 Total=10
# BEAM-1:175 :: C00 C04 C05 C10 C11 C13 E03 S01 S02 S03 W02 Total=11
# BEAM-2:130 :: C01 C02 C03 C06 C08 C09 C12 C14 E02 W01 Total=10
# BEAM-2:175 :: C01 C02 C03 C06 C08 C09 C12 C14 E02 W01 Total=10

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 4
GPU_ACQ_BW  	: 100.0000
GPU_FINAL_BW  	: 100.0000
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 1024
GPU_CHAN_NUM  	: 0:1023:1
GPU_STOKES  	: Total_Intensity
GPU_SIDEBAND  	: 1 1
GPU_RF3  	: 400  400
GPU_DDCLO3  	: 0.0000  0.0000
GPU_SB3  	: 1 1
GCODE3  	: 37_004B
GPU_RF4  	: 550  550
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: -1 -1
GCODE4  	: 37_004A
GPU_CNTRL  	: ONLINE
GPU_FSTOP  	: ON
GPU_BEAM_1  	: Voltage
GPU_BEAM_2  	: Voltage
GPU_BEAM_3  	: OFF
GPU_BEAM_4  	: OFF
GPU_BM_INT  	: 128
GPU_GAINEQ  	: OFF
GPU_TPA  	: From GWB GUI.
GPU_BITS  	: 8 Bits
GPU_FILRFI  	: RFI Filterring OFF
GPU_BEAM_S  	: OFF
--------------------------------
12:15:00 : Started subar splitting.

# Band3 # Suba 3# C001 C02 C03 C06 C08 C09 C12 C14 W01 E02

ante 10 6 5 1 20 24 4 2 10 8 17
cp 0;defs 3;subar 3

# Band4 # sub 4 # C00 C04 C05 C10 C11 C13 W02 W03 W04 W05 W06 E03 E04 E05 E06 S01 S02 S03 S04 S06
ante 20 7 3 19 12 9 11 13 14 15 16 25 18 21 22 23 26 27 28 29 30
cp 0;defs 4;subar 4

12:30 : Started setup for pointing.
12:45 : Started pntg cmd file
         /odisk/gtac/cmd/pntg/gpntg.cmd

13:10 : pntg done ..updated pntg offsets.
13:15:00 : Started setup for band3 and band4.
13:30:00 : Started power eq on 3C48 for both GSB and GWB.
13:45:00 : Started phasing for both gsb and gwb.
14:12:35 : Started scan on 3C48 for ~ 2.11393 min.
14:15:52 : Started scan on 3C48OFF for ~ 1.77838 min.
14:45:19 : Started scan on 2225-049 for ~ 3.65743 min.
14:49:19 : Started scan on 2225-049 for ~ 4.29496 min.
14:56:22 : Started scan on J1939+2134 for ~ 65.5317 min.
16:00 : Stopped scan and observation session is over.