GTAC Observation Log

1. Date : 23/12/2019
2. Observation Sr. No. : 11718
3. Observer : Jayanta Roy, Bhaswati Bhattacharyya, Lina Levin, Ben Stappers, Paul Ray
4. Observer's Email : jroy@ncra.tifr.res.in, bhaswati.bhattacharyya78@gmail.com, lina.s.levin@gmail.com, Ben.Stappers@manchester.ac.uk, paul.ray@nrl.navy.mil
5. Project Name : Multi-frequency timing of millisecond pulsars discovered with the GMRT
6. Project Code : 37_053
7. Operator(s) : Sachin
8. Command File : /odisk/gtac/cmd/jroy/37_053_23dec_1.cmd
9. LTA File : /gwbifrdata1/23dec/37_053_suba4-band4_23dec2019_gwb.lta, /gwbifrdata1/23dec/37_053_suba3-band3_23dec2019_gwb.lta, /gwbifrdata1/23dec/37_053_allant_band4_23dec2019_gwb.lta
10. LogFlag File : /odisk/online1/logflags/37_053B.FLAGS.7, /odisk/online1/logflags/37_053B.FLAGS.6, /odisk/online1/logflags/37_053A.FLAGS.7, /odisk/online1/logflags/37_053A.FLAGS.6, /odisk/online1/logflags/37_053.FLAGS.7, /odisk/online1/logflags/37_053.FLAGS.6

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 : 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) : 591 591 540 540 51 51
30. Integration Time : 2.0132 Sec
31. No of Antennas Working(Fringing) at the beginning :26

32. Name of Non-Working Antennas (with reason for each) :
C02 : Got reset.
W05 : MCM 14 timed out.
E02 : Got reset.
S01 : Got reset.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 23 Dec 2019 16:00:00 - 23 Dec 2019 18:05:00

35. ONLINE Machine : Shivneri

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

37. RFI Status :

38. Comments (During Observations) :

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 4
GPU_ACQ_BW  	: 200.0000
GPU_FINAL_BW  	: 200.0000
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 4096
GPU_CHAN_NUM  	: 0:4095:1
GPU_STOKES  	: Total_Intensity
GPU_SIDEBAND  	: 1 1
GPU_RF4  	: 550  550
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: -1 -1
GCODE4  	: 37_053
GPU_CNTRL  	: ONLINE
GPU_FSTOP  	: ON
GPU_BEAM_1  	: Voltage
GPU_BEAM_2  	: OFF
GPU_BEAM_3  	: OFF
GPU_BEAM_4  	: PA
GPU_BM_INT  	: 4
GPU_GAINEQ  	: OFF
GPU_TPA  	: From GWB GUI.
GPU_BITS  	: 8 Bits
GPU_FILRFI  	: RFI Filterring OFF
GPU_BEAM_S  	: OFF
--------------------------------
# GWB GAC configuration is as follows : 
# BEAM-1:130 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E03 E04 E05 S02 S03 S04 W01 W02 W03 W04 Total=23
# BEAM-1:175 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E03 E04 E05 S02 S03 S04 W01 W02 W03 W04 Total=23
# BEAM-2:130 :: Total=0
# BEAM-2:175 :: Total=0
# BEAM-3:130 :: Total=0
# BEAM-3:175 :: Total=0
# BEAM-4:130 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E03 E04 E05 S02 S03 S04 W01 W02 W03 W04 Total=23
# BEAM-4:175 :: C00 C01 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E03 E04 E05 S02 S03 S04 W01 W02 W03 W04 Total=23

16:09:55 : Started scan on 2225-049 for ~ 0.626349 min.
16:12:24 : Started scan on 2225-049 for ~ 3.17648 min.
16:15:44 : Started scan on 2225-049 for ~ 1.96852 min.
16:17:50 : Started scan on 2225-049 for ~ 3.5344 min.
16:21:28 : Started scan on 2225-049 for ~ 3.84757 min.
16:25:28 : Started scan on 2225-049 for ~ 3.087 min.

Problems : 
1. Two subarrays were having problem. Were showing failed.
2. Observed that phasing also not happening at 325 MHz.


So closed observation session and took all antennas at 610 MHz.
16:46:48 : Started scan on 3C48 for ~ 1.61061 min.
16:50:10 : Started scan on J0248+4230 for ~ 61.4717 min.
18:02 : Closed observation session.