GTAC Observation Log 1. Date : 08/07/2018 2. Observation Sr. No. : 10401 3. Observer : Ruta Kale, Daniele Dallacasa, Tiziana Venturi, Rossella Cassano, Gianfranco Brunetti, Julius MaxFerdinand Donnert 4. Observer's Email : ruta@ncra.tifr.res.in, daniele.dallacasa@unibo.it, tventuri@ira.inaf.it, rcassano@ira.inaf.it, brunetti@ira.inaf.it, donnert@ira.inaf.it 5. Project Name : A deep uGMRT view of the prototypical ultra-steep spectrum radio halo in Abell 521: investigating the global spectral properties on local scales 6. Project Code : 34_036 7. Operator(s) : Deepak, Navnath, Rupsing, Sachin, Shilpa 8. Command File : /odisk/gtac/cmd/34_036/34_036_08jul.cmd 9. LTA File : /gsbifrdata1/08jul/34_036_08jul2018_gsb.lta.1, /gsbifrdata1/08jul/34_036_08jul2018_gsb.lta, /gwbifrdata2/08jul/34_036_08jul2018_gwb.lta 10. LogFlag File : /odisk/online1/logflags/34_036.FLAGS.2 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 : 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 : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : C09 : : Mechanical work W01 : : Ripples @130 pole(GWB+GSB. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 08 Jul 2018 05:30:00 - 08 Jul 2018 16:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 05:30 : Started setup. 05:55 : Started command file. /odisk/gtac/cmd/34_036/34_036_08jul.cmd ------------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 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : 34_036 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 : 8 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 64 inputs. GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF --------------------------------------------------------------------------- 10:21 : Stopped scan only gsb due to oper2 machine reboot. --------------------------------------------------------------------------- 10:35 : Restarted scan with new lta(gsb) file. --------------------------------------------------------------------------- 15:10 : Stopped command file. 15:14 : Started scan on 3C147. 15:51 : Stopped scan and observing session over.