GTAC Observation Log

1. Date : 16/06/2023
2. Observation Sr. No. : 15510
3. Observer : Jyotirmoy Das, Jayanta Roy, Karel Adamek, Wes Armour, Mekhala Muley
4. Observer\'s Email : jdas@ncra.tifr.res.in, jroy@ncra.tifr.res.in, karel.adamek@gmail.com, wes.armour@oerc.ox.ac.uk, mekhala@gmrt.ncra.tifr.res.in
5. Project Name : Coherently dedispersed jerk search for the MSPs in globular clusters
6. Project Code : 44_075
7. Operator(s) : Nilesh
8. Command File : /data1/gtac/cmd//44_075/15Jun2023/44_075_15Jun2023_2300_cmd.py
9. LTA File : /gwbifrdata1/15jun/44_075_15jun2023_b4_gwb.lta
10. LogFlag File :   

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/TGC
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 : 4.0265 Sec
31. No of Antennas Working(Fringing) at the beginning :29

32. Name of Non-Working Antennas (with reason for each) :
W04 : Servo problem.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 15 Jun 2023 23:00:00 - 16 Jun 2023 02:00:00

35. ONLINE Machine : TGC

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

37. RFI Status :

38. Comments (During Observations) :
23:00 : Started settings.

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 8
GPU_ACQ_BW  	: 200.0000
GPU_FINAL_BW  	: 200
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  	: 44_075
GPU_CNTRL  	: ONLINE/TGC
GPU_FSTOP  	: ON
GPU_BEAM_1  	: OFF
GPU_BEAM_2  	: VOLTAGE
GPU_BEAM_3  	: PA
GPU_BEAM_4  	: OFF
GPU_BM_INT  	: 4
GPU_GAINEQ  	: ON
GPU_TPA  	: From online/TGC tpa
GPU_BITS  	: 8 Bits
GPU_FILRFI  	: RFI Filterring OFF
GPU_BEAM_S  	: OFF
GPU_PFB  	: OFF
GPU_PFB_TAPS  	: 4
GPU_BEAM_BIT  	: 16
GPU_VLT_BIT  	: 8
GPU_WALSH  	: OFF
GPU_ENV  	: RELEASED
--------------------------------

====================================================================
# GWB GAC configuration is as follows : 
# BEAM-2:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 Total=14
# BEAM-2:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 Total=14
# BEAM-3:130 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 Total=14
# BEAM-3:175 :: C00 C01 C02 C03 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 Total=14
====================================================================
pulsar DATA files:
gwbh8:/data8/gpuuser/44_075_data8_16jun2023/*
gwbh9:/data2/gpuuser/44_075_16jun2023_data2/*
====================================================================

23:19 : Started phasing gon 1830-360.
23:35 : Noticed that Phasing is not worked. 

23:40 : Started phasing on 3C286.
23:50 : found that Phasing not working.

23:59 : Noticed that, LTA data record integration was high and which is not sufficient for regular phasing time, changed LTA data integration to default value. and restarted command file.

NOTE : Lost about 40 minutes due to phasing problem as mentioned above.

00:02 : Started command file.
          /data1/gtac/cmd//44_075/15Jun2023/44_075_15Jun2023_2300_cmd.py

02:01 : source set below horizon, command file stopped and observation closed.