GTAC Observation Log 1. Date : 26/10/2019 2. Observation Sr. No. : 11529 3. Observer : Rajeshwari Dutta 4. Observer's Email : rdutta@eso.org 5. Project Name : DDT observation 6. Project Code : DDTC091 7. Operator(s) : Pramod, Rupsing, Sachin 8. Command File : /odisk/gtac/cmd/ddtc091/obs.cmd 9. LTA File : /gsbifrdata/25oct/ddtc091_25oct2019_gsb.lta, /gwbifrdata1/25oct/ddtc091_25oct2019_gwb.lta 10. LogFlag File : /odisk/online1/logflags/DDTC098.FLAGS.6 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1281 MHz ,RF2 : 1281 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1230 MHz, ILO2 : 1230MHz , IVLO1 : 51 MHz, IVLO2 : 51 MHz 13. IF Attn(dB) , IF BW(MHz) & IF ALC : IF-CH1 : 4+12 dB, 32 MHz,ON, IF-CH2 : 4+12 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) : 1281 1281 1230 1230 51 51 30. Integration Time : 8.053 Sec 31. No of Antennas Working(Fringing) at the beginning :29 32. Name of Non-Working Antennas (with reason for each) : C04 : Mechanical work 33. Note for Backup : 34. Start and End Time of Obs.(IST): 25 Oct 2019 20:00:00 - 26 Oct 2019 02:00:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. RFI Status :Satellite RFI from 01:30 to 02:19 38. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 100.0000 GPU_FINAL_BW : 12.5000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 1340 1340 GPU_DDCLO4 : 10.7500 10.7500 GPU_SB4 : 1 1 GCODE4 : DDTC091 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 GPU_TPA : From GWB GUI. GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF ----------------------------------------------------------------------- 20:00 : GWB not working(GWB ACQ execution time problem.) ----------------------------------------------------------------------- From 20:00 to 22:10 : GWB problem. 22:10 : GWB problem solved. ----------------------------------------------------------------------- 22:17 : Started scan on 3C48 for 10min. 22:27 : Stopped scan and Started command file. '/odisk/gtac/cmd/ddtc091/obs.cmd' 02:45 : Stopped command file and took phase cal for 5 mins and flux cal for 8 mins. 03:00 : Closed observation session.