GTAC Observation Log

1. Date : 01/04/2024
2. Observation Sr. No. : 16595
3. Observer : Nissim Kanekar, Aditya Chowdhury, Balpreet Kaur, Jayaram Narayanan Chengalur
4. Observer\'s Email : nkanekar@ncra.tifr.res.in, chowdhury@ncra.tifr.res.in, bkaur@ncra.tifr.res.in, chengalur@ncra.tifr.res.in
5. Project Name : %latex% An Ultra-Deep GMRT Band-4 HI 21cm Emission Survey of Galaxies in the COSMOS field
6. Project Code : 45_127
7. Operator(s) : Pramod, Rupsing, Shriram
8. Command File : /data1/gtac/cmd/45_127/45_127_31Mar2024_2000_cmd.py
9. LTA File : /gsbifrdata1/31mar/45_127_31mar2024_b4_gsb.lta, /gwbifrdata/31mar/45_127_31mar2024_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+12 dB, 32 MHz,ON, IF-CH2 : 4+12 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 : 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 :29

32. Name of Non-Working Antennas (with reason for each) :
S03 : Strong RFI.

33. Note for Backup :

34. Start and End Time of Obs.(IST): 31 Mar 2024 20:00:00 - 01 Apr 2024 03:00:00

35. ONLINE Machine : TGC

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

37. RFI Status :

38. Comments (During Observations) :

------------GWB Setting---------
GPU_MODE  	: Realtime
GPU_LTA  	: 4
GPU_ACQ_BW  	: 400.0000
GPU_FINAL_BW  	: 400
GPU_EDGE_FRQ  	: 0
GPU_CHAN_MAX  	: 16384
GPU_CHAN_NUM  	: 0:16383:1
GPU_STOKES  	: Total_Intensity
GPU_SIDEBAND  	: 1 1
GPU_RF4  	: 550 550
GPU_DDCLO4  	: 0.0000  0.0000
GPU_SB4  	: 1 1
GCODE4  	: 45_127
GPU_CNTRL  	: ONLINE/TGC
GPU_FSTOP  	: ON
GPU_BEAM_1  	: OFF
GPU_BEAM_2  	: OFF
GPU_BEAM_3  	: OFF
GPU_BEAM_4  	: OFF
GPU_BM_INT  	: 8
GPU_GAINEQ  	: ON
GPU_TPA  	: From online/TGC tpa
GPU_BITS  	: 4 Bits
GPU_FILRFI  	: RFI Filterring OFF
GPU_BEAM_S  	: OFF
GPU_PFB  	: ON
GPU_PFB_TAPS  	: 4
GPU_BEAM_BIT  	: 16
GPU_VLT_BIT  	: 8
GPU_WALSH  	: OFF
GPU_ENV  	: RELEASED
-----------------------------------------------------------------------
20:20 : Started command file,
       \'/data1/gtac/cmd/45_127/45_127_31Mar2024_2000_cmd.py\'
-----------------------------------------------------------------------
20:40 - 00:22 Scintillation observed on phase cal.
-----------------------------------------------------------------------
00:22 : Resumed command file.

13:08 : Scintillation observed on phase cal. Paused command file.
13:30 : Phase looked stable, Resumed command file.

01:30:34 : Started scan on 0943-083 for ~ 5.18975 min.
01:37:09 : Started scan on COSMOS1 for ~ 44.2023 min.
02:24:46 : Started scan on 1041+061 for ~ 5.18975 min.
02:31:13 : Started scan on COSMOS1 for ~ 5.18975 min.
02:38:19 : Started scan on 1041+061 for ~ 5.18975 min.
02:47:49 : Started scan on 3C286 for ~ 11.8111 min.
03:00 : Scan stopped and observation session over.