GTAC Observation Log 1. Date : 19/02/2018 2. Observation Sr. No. : 10106 3. Observer : Virginia Cuciti, Gianfranco Brunetti, Dharam Vir Lal, Annalisa Bonafede, Daniele Dallacasa, Rossella Cassano, Tiziana Venturi 4. Observer's Email : vcuciti@ira.inaf.it, brunetti@ira.inaf.it, dharam@ncra.tifr.res.in, abonafede@ira.inaf.it, daniele.dallacasa@unibo.it, rcassano@ira.inaf.it, tventuri@ira.inaf.it 5. Project Name : Searching for Ultra Steep Spectrum Radio Halos in merging galaxy clusters with the uGMRT 6. Project Code : 33_015 7. Operator(s) : Nilesh 8. Command File : /odisk/gtac/cmd/33_015/18feb18/obs.cmd 9. LTA File : /gwbifrdata/18feb/33_015_18feb2018_gwb.lta 10. LogFlag File : /odisk/online1/logflags/33_015.FLAGS.2 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 :30 32. Name of Non-Working Antennas (with reason for each) : W05,E03 : Strong RFI. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 18 Feb 2018 23:05:00 - 19 Feb 2018 04:15:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :30 37. Comments (During Observations) : 23:00 : 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 : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 500 500 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 33_015 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 -------------------------------- 23:16 : Started scan on 3C147 for ~ 13min. 23:30 : Stopped scan and started command file. /odisk/gtac/cmd/33_015/18feb18/obs.cmd 04:00 : Stopped command file and started scan on 3C286 for ~ 15 min. 04:15 : Stopped scan and observation closed.