GTAC Observation Log 1. Date : 30/06/2021 2. Observation Sr. No. : 13254 3. Observer : Jaikhomba Singha, BHAL CHANDRA JOSHI, Yogesh Maan, Manjari Bagchi, Shantanu Desai, Gopakumar Achamveedu, Yashwant Gupta, Prabu Thiagaraj 4. Observer\'s Email : mjaikhomba@gmail.com, bcj@ncra.tifr.res.in, ymaan4@gmail.com, manjari.bagchi@gmail.com, shntn05@gmail.com, gopu.tifr@gmail.com, ygupta@ncra.tifr.res.in, prabu@rri.res.in 5. Project Name : High cadence follow up of a transient scattering event in PSR J1713\\\\+0747 6. Project Code : ddtC186 7. Operator(s) : Navnath 8. Command File : /data1/gtac/cmd/ddtc186/30jun21/obs.py 9. LTA File : /gwbifrdata1/30jun/ddtc186_30jun2021.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 : 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) : 306 306 255 255 51 51 30. Integration Time : 4.0265 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 30 Jun 2021 02:00:00 - 30 Jun 2021 03:10:00 35. ONLINE Machine : TGC 36. No of Antennas Working(Fringing) at the end :29 37. RFI Status : 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 8 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 1024 GPU_CHAN_NUM : 0:1023:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 470 470 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : DDTC186 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : VOLTAGE GPU_BEAM_3 : OFF GPU_BEAM_4 : OFF GPU_BM_INT : 4 GPU_GAINEQ : ON GPU_TPA : From online/TGC tpa GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF GPU_PFB : OFF GPU_PFB_TAPS : 4 GPU_BEAM_BIT : 16 GPU_VLT_BIT : 8 GPU_ENV : RELEASED -------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: Total=0 # BEAM-1:175 :: Total=0 # BEAM-2:130 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 W01 Total=16 # BEAM-2:175 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 S01 W01 Total=16 ---------------------------------------------------------------------- 02:00:00 : Started feed rotation to band3. 02:10:00 : Started setup. : 3C48 is not up 02:16:47 : Started scan on 3C48 for ~ 4.47392 min. : started power eq and phasing. 02:22:28 : Started scan on 3C48 for ~ 1.34218 min. 02:30:00 : Started cmd file. /data1/gtac/cmd/ddtc186/30jun21/obs.py 02:32:53 : Started scan on 3C48 for ~ 1.16322 min. 02:34:20 : Started scan on 3C48 for ~ 1.16322 min. 02:36:59 : Started scan on 3C48OFF for ~ 1.2527 min. 02:43:05 : Started scan on 1710+460 for ~ 1.34218 min. 02:44:38 : Started scan on 1710+460 for ~ 0.715827 min. 02:57:27 : Started scan on J1713+0747 for ~ 16.3745 min. 03:10:00 : Observation session over.