GTAC Observation Log 1. Date : 26/08/2019 2. Observation Sr. No. : 11370 3. Observer : Gianni Bernardi, Annalisa Bonafede, Tiziana Venturi, Daniele Dallacasa, Federica Govoni, Matteo Murgia 4. Observer's Email : giannibernardi75@gmail.com, a.bonafede@ira.inaf.it, tventuri@ira.inaf.it, daniele.dallacasa@unibo.it, fgovoni@ca.astro.it, matteo@oa-cagliari.inaf.it 5. Project Name : In search of large-scale radio signatures: observations of the A399-A401 and A21-PSZ2 G114.9 cluster pairs 6. Project Code : 36_043 7. Operator(s) : Deepak, Nilesh, Shilpa, Surender 8. Command File : /odisk/gtac/cmd/36_043/25aug19/obs_25aug19.cmd 9. LTA File : /gsbifrdata1/25aug/36_043_25aug2019_gsb.lta, /gwbifrdata1/25aug/36_043_25aug2019_gwb.lta 10. LogFlag File : /odisk/online1/logflags/36_043.FLAGS 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 : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :27 32. Name of Non-Working Antennas (with reason for each) : E04 : Fibre cut. E05 : Fibre cut. E06 : Fibre cut. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 25 Aug 2019 21:45:00 - 26 Aug 2019 08:10:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :27 37. RFI Status : 38. Comments (During Observations) : 21:45 : Started settings. ------------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 : 36_043 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 : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- 21:50 : Started scan on 3C468.1 for ~ 12 min. 22:05 : Started command file. /odisk/gtac/cmd/36_043/25aug19/obs_25aug19.cmd 07:45 : Strong RFI lines. 07:50 : Stopped command file. 07:54 : Started scan on 3C147. 08:10 : Stopped scan and observing session over.