GTAC Observation Log 1. Date : 24/05/2021 2. Observation Sr. No. : 13117 3. Observer : Ewan O`Sullivan, Gerrit Schellenberger, Jan M. Vrtilek, Laurence Paul David, Giacintucci Simona, Konstantinos Kolokythas 4. Observer\'s Email : eosullivan@cfa.harvard.edu, gerrit.schellenberger@cfa.harvard.edu, jvrtilek@cfa.harvard.edu, ldavid@head.cfa.harvard.edu, simona.giacintucci@nrl.navy.mil, k.kolok@nwu.ac.za 5. Project Name : Radio study of an X-ray underluminous sample of merging galaxy clusters 6. Project Code : 40_035 7. Operator(s) : Manisha, Nilesh, Shilpa, Shriram, Surender 8. Command File : /data1/gtac/cmd/40_035/24may21/obs.py 9. LTA File : /gsbifrdata/24may/40_035_24may2021_gsb.lta, /gwbifrdata1/24may/40_035_24may2021_gwb.lta 10. LogFlag File : 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 : TGC 18. GSB Fstop : ON 19. GAIN EQ : OFF 20. Stokes : Full_Stokes 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 :28 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. C06 : For painting. C11 : No fringe in GSB. S06 : No fringe in GSB. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 24 May 2021 14:00:00 - 24 May 2021 18:10:00 35. ONLINE Machine : TGC 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 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 : 40_035 GPU_CNTRL : TGC 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 : ON GPU_TPA : From online/TGC tpa GPU_BITS : 8 Bits GPU_FILRFI : Voltage Detection GPU_BEAM_S : OFF GPU_PFB : ON GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_ENV : RELEASED -------------------------------------------------------------------------- 14:00 : Started settings. 14:15 : Started GSB and GWB, but GSB gives the error. 14:30 : Rebooted GSB node47 and tried to start GSB but problem still persist. So started GWB only. 14:45 : Power equalized on 3C147 @ 80 counts. Applied RFI Filtering options 4 sigma, digital noise, all channels. 14:55 : GSB problem solved, so started GSB. ------------------------------------------------------------------------- 15:03 : Started scan on 3C147 for ~ 8.58993 min. 15:21 : \'/data1/gtac/cmd/40_035/24may21/obs.py\' command file started. 17:58 : Command file stopped. 18:02 : Started scan on 3C286 ~8 min. 18:10 : Scan stopped and observing session over. -------------------------------------------------------------------------