GTAC Observation Log 1. Date : 23/03/2023 2. Observation Sr. No. : 15262 3. Observer : Barnali Das, Poonam Chandra, Matthew Shultz, Veronique Petit, Wade 4. Observer\'s Email : barnali@udel.edu, pchandra@nrao.edu, matt.shultz@gmail.com, Vpetit@udel.edu, marmottecam@yahoo.ca 5. Project Name : Investigating the onset of coherent radio emission in hot magnetic stars 6. Project Code : 43_083 7. Operator(s) : Navnath, Sachin, Shilpa 8. Command File : /data1/gtac/cmd/43_083/43_083_23Mar2023_1800_cmd.py 9. LTA File : /gsbifrdata1/23mar/43_083_23mar2023_b4_gsb.lta.1, /gsbifrdata1/23mar/43_083_23mar2023_b4_gsb.lta, /gwbifrdata1/23mar/43_083_23mar2023_b4_gwb.lta.1, /gwbifrdata1/23mar/43_083_23mar2023_b4_gwb.lta 10. LogFlag File : 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/TGC 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) : C02 : Not releasing brakes. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 23 Mar 2023 17:45:00 - 23 Mar 2023 23:00:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :30 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 400.0000 GPU_FINAL_BW : 400 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 4096 GPU_CHAN_NUM : 0:4095:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 470 470 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : SUBA4 GPU_CNTRL : ONLINE/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 : 4 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_WALSH : OFF GPU_ENV : RELEASED ------GWB RFI Filter Setting----- 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 -------------------------------- 17:45:00 : Started setup. 18:04:31 : Started scan on flux cal to check fringes. 18:20:00 : Started cmd file. /data1/gtac/cmd/43_083/43_083_23Mar2023_1800_cmd.py 18:26:40 : Started scan on 0738-304 for ~ 10.3348 min. 18:39:15 : Started scan on HD64740 for ~ 16.9114 min. 19:00:00 : ACQ got kille.d Restarted Correlator chain. : Restarted cmd file /data1/gtac/cmd/43_083/end.py 19:11:36 : Started scan on 0835-451 for ~ 5.3687 min. 19:18:55 : Started scan on HD64740 for ~ 45.3655 min. 19:55:00 : C02 started tracking. 20:07:13 : Started scan on 0835-451 for ~ 5.3687 min. 20:14:08 : Started scan on HD64740 for ~ 45.2313 min. 21:01:07 : Started scan on 0835-451 for ~ 3.087 min. : Scintillation has been observed in data. 21:08:14 : Started scan on HD64740 for ~ 45.2761 min. 21:55:08 : Started scan on 0835-451 for ~ 5.3687 min. 22:02:12 : Started scan on HD64740 for ~ 13.2428 min. 22:22:24 : Started scan on 3C286 for ~ 20.2221 min. 23:00 : Closed observation session. -----------------------------------------------------------------------