GTAC Observation Log 1. Date : 20/12/2020 2. Observation Sr. No. : 12699 3. Observer : Mousumi Mahato, Pratik Dabhade, D.J. Saikia 4. Observer\'s Email : mousumimahato187@gmail.com, pratikdabhade13@gmail.com, dhrubasaikia@iucaa.in 5. Project Name : Studying giant double-double radio galaxies (DDRGs) from LoTSS 6. Project Code : 39_069 7. Operator(s) : Nilesh 8. Command File : /data1/gtac/cmd/39_069/obs_20dec2020.py 9. LTA File : /gsbifrdata1/20dec/39_069_20dec2020_gsb.lta, /gwbifrdata1/20dec/39_069_20dec2020_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 18. GSB Fstop : ON 19. GAIN EQ : ON 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : OFF 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 : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C01 : Low Fringe. S06 : FEED Jammed. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 20 Dec 2020 08:00:00 - 20 Dec 2020 12:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :27 37. RFI Status : 38. Comments (During Observations) : 08:00 : Started settings. ---------GWB SETTINGS---------------- GPU_MODE = REALTIME GPU_LTA = 4 GPU_ACQ_BW = 200.0000 GPU_CHAN_MAX= 8192 GPU_CHAN_NUM= 0:8191:1 GPU_STOKES = Total_Intensity GPU_RF4 = 550 550 GPU_DDCLO4 = 0.000000 0.000000 GPU_SB4 = -1 -1 GCODE4 = 39_069 GPU_CNTRL = TGC GPU_FSTOP = ON GPU_GAINEQ = ON GPU_TPA = TGC GPU_BITS = 8 GPU_ENV = RELEASED -------------------------------------- 08:19:34 : Started scan on 3C286 for ~ 12.4822 min. 08:34:00 : Started command file. /data1/gtac/cmd/39_069/obs_20dec2020.py 11:35:00 : Stopped command file. 11:36:50 : Started scan on S1J1106+485 for ~ 0.805306 min. Stoppped scan ***SOURCE SET**** 11:41:13 : Started scan on S3J1124+554 for ~ 10.0663 min. 11:53:28 : Started scan on 3C286 for ~ 0.53687 min. 12:00 : Stopped scan and observation closed.