GTAC Observation Log 1. Date : 21/08/2020 2. Observation Sr. No. : 12332 3. Observer : Virginia Cuciti, Rossella Cassano, Ruta Kale, Andrea Botteon, Francesco de Gasperin, Ignesti, Marcus Bruggen, Gianfranco Brunetti, Reinout Johannes vanWeeren, Shimwell 4. Observer\'s Email : vcuciti@hs.uni-hamburg.de, rcassano@ira.inaf.it, ruta@ncra.tifr.res.in, botteon@strw.leidenuniv.nl, fdg@hs.uni-hamburg.de, alessandro.ignesti2@unibo.it, mbrueggen@hs.uni-hamburg.de, brunetti@ira.inaf.it, rvweeren@strw.leidenuniv.nl, shimwell@strw.leidenuniv.nl 5. Project Name : A systematic spectral study of diffuse radio emission in galaxy clusters with the uGMRT and LOFAR 6. Project Code : 38_025 7. Operator(s) : Nilesh 8. Command File : /odisk/gtac/cmd/38_025/aug2020/21aug.cmd 9. LTA File : /gsbifrdata1/21aug/38_025_21aug2020_band3_gsb.lta, /gwbifrdata1/21aug/38_025_21aug2020_5.4s_band3_gwb.lta 10. LogFlag File : /odisk/online1/logflags/38_025.FLAGS.9 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 306 MHz ,RF2 : 306 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 255 MHz, ILO2 : 255MHz , 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) : 306 306 255 255 51 51 30. Integration Time : 4.0265 Sec 31. No of Antennas Working(Fringing) at the beginning :26 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work C06 : FPS problem S02 : FPS problem E06 : ABC time out. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 21 Aug 2020 09:30:00 - 21 Aug 2020 15:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :28 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 : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 500 500 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 38_025 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF 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 : Voltage Detection GPU_BEAM_S : OFF -------------------------------- 09:40 : Started settings. # RFI FILTER SETTINGS HEADER GWB_VERSION : gwb3 # version of the gui FILTERED_SIGNALS : RFI_ALL # RFI_ALL=All signals filtered / RFI_CH1 =Channel 1 only / RFI_CH2=Channel 2 only EXTERNAL MEDIAN : 0 # integer value(-128 to 127) THRESHOLD VALUE : 4 # integer value(0 to 127) CONSTANT VALUE : 0 # integer value(-128 to 127) FILTERING OPTION : DIGITAL NOISE # BYPASS / CONSTANT=constant value is used / THRESHOLD / DIGITAL_NOISE DDC_STATUS : OFF # DDC = ON/OFF 09:50 : Power eq on 3C147 at 90 counts. 10:02 : Started scan on 3C147 for ~ 14.0928 min. 10:18 : C06 released for observation. 10:19 : Started command file. /odisk/gtac/cmd/38_025/aug2020/21aug.cmd 10:35 : C01 and S06 ABC time out. 11:20 : C01 and S06 started working. 11:30 : S03 taken for maintenance work. 12:20 : S02 released for observations. 13:00 : E06 released for observations. 14:47 : Stopped scan and command file. 14:49 : Started scan on 3C286 for ~ 10 min. 15:00 : Stopped scan and closed observation.