GTAC Observation Log 1. Date : 29/07/2019 2. Observation Sr. No. : 11290 3. Observer : Arianna,Alessandro Ridolfi,Bhaswati Bhattacharyya,Yashwant Gupta Arianna,Alessandro Ridolfi,Bhaswati Bhattacharyya,Yashwant Gupta 4. Observer's Email : arianna.miraval@inaf.it,alessandro.ridolfi@inaf.it,bhaswati@ncra.tifr.res.in,ygupta@ncra.tifr.res.in 5. Project Name : DDTC082 6. Project Code : DDTC082 7. Operator(s) : Rupsing 8. Command File : /odisk/gtac/cmd/ddtc082/cmd_J2129_29Jul.final.cmd 9. LTA File : /gwbifrdata1/29jul/ddtc082_29jul2019_601.lta, /gwbifrdata2/29jul/ddtc082_29jul2019_325.lta 10. LogFlag File : /odisk/online1/logflags/SUBA2.FLAGS.1168, /odisk/online1/logflags/DDTC082.FLAGS.2 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+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) : 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) : S01 : Feed Jam. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 29 Jul 2019 02:00:00 - 29 Jul 2019 06:07:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : 02:30 : Setup done for multi sub-array --------------------------------------------------------------------------- # Sub 2 # 325MHz # C01 C02 C04 C05 C09 C10 C12 C13 C14=9 # Sub 4 # 610MHz # C00 C03 C06 C08 C11 W01 W02 E02 E03 S01 S02=11 -------------------------------------------------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C01 C02 C04 C05 C09 C10 C12 C13 C14 Total=9 # BEAM-1:175 :: C01 C02 C04 C05 C09 C10 C12 C13 C14 Total=9 # BEAM-2:130 :: C00 C03 C06 C08 C11 E02 S02 W01 W02 Total=9 # BEAM-2:175 :: C00 C03 C06 C08 C11 E02 S02 W01 W02 Total=9 -------------------------------------------------------------------------- GWB was not working for BW=200MHz(CDP+CDP)Hence I have GWB started with 100MHz(Ref:-Bhashwati). -------------------------------------------------------------------------- ------------GWB Setting--------------------------------------------------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 100.0000 GPU_FINAL_BW : 100.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF4 : 550 550 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : DDTC082 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : Voltage GPU_BEAM_2 : Voltage 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 ------------------------------------------------------------------------- 03:00 : Power eq and phasing on 2225-049 ------------------------------------------------------------------------ 03:10 : Started command file ------------------------------------------------------------------------ 03:18 : Stopped command file due to beam1 data recording was automatic stop but beam2 data properly recording. ------------------------------------------------------------------------ 03:25 : Restarted command file but same problem exist. ------------------------------------------------------------------------ 04:25 : Phasing on 2225-049. ------------------------------------------------------------------------ 04:27 : Restarted command file. ------------------------------------------------------------------------ 04:30 : Beam2 data file overwrite due file name is more 1 charecter has not taken(means extension raw1:file name only taken raw). ------------------------------------------------------------------------ 04:40 : Restarted command file. 05:53 : Stopped command file and observation session over. ------------------------------------------------------------------------ Note : Observation was not done properly due to multi suba-array data recording problem(only beam2 data recorded last 70m).