GTAC Observation Log 1. Date : 05/12/2022 2. Observation Sr. No. : 14851 3. Observer : Bhaswati Bhattacharyya, Jayanta Roy, Ben Stappers, Michael Keith, Mateusz Malenta, Maura Ann McLaughlin, Paul Ray, Scott M. Ransom, Jayaram Narayanan Chengalur, Andrew Lyne, Sanjay S. Kudale, Ujjwal Panda, Shubham Singh, Wes Armour, Karel Adamek, Shyam Sunder, Sangita Kumari 4. Observer\'s Email : bhaswati.bhattacharyya78@gmail.com, jroy@ncra.tifr.res.in, Ben.Stappers@manchester.ac.uk, mkeith@pulsarastronomy.net, mateusz.malenta@student.manchester.ac.uk, maura.mclaughlin@mail.wvu.edu, paul.ray@nrl.navy.mil, sransom@nrao.edu, chengalur@ncra.tifr.res.in, andrew.lyne@manchester.ac.uk, ksanjay@gmrt.ncra.tifr.res.in, ujjwalpanda97@gmail.com, ssingh@ncra.tifr.res.in, wes.armour@oerc.ox.ac.uk, karel.adamek@slu.cz, ssunder@ncra.tifr.res.in, skumari@ncra.tifr.res.in 5. Project Name : GMRT High Resolution Southern Sky (GHRSS) survey for millisecond pulsars and transients : A SKA precursor survey 6. Project Code : 43_112 7. Operator(s) : Surender 8. Command File : /data1/gtac/cmd/43_112/43_112_5dec.py 9. LTA File : /gsbifrdata1/05dec/43_112_05dec2022_gsb.lta, /gwbifrdata1/05dec/43_112_05dec2022_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 : ONLINE/TGC 18. GSB Fstop : ON 19. GAIN EQ : ON 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 : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :28 32. Name of Non-Working Antennas (with reason for each) : C03 : Mechanical Work. E04 : Feed is not rotating. GSB : No self power and fringe in CH-1 for Y-array antennas 33. Note for Backup : 34. Start and End Time of Obs.(IST): 05 Dec 2022 00:00:00 - 05 Dec 2022 07:00:00 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 : 43_112 GPU_CNTRL : ONLINE/TGC GPU_FSTOP : ON GPU_BEAM_1 : OFF GPU_BEAM_2 : OFF GPU_BEAM_3 : OFF GPU_BEAM_4 : IA GPU_BM_INT : 4 GPU_GAINEQ : ON GPU_TPA : From online/TGC tpa GPU_BITS : 8 Bits GPU_FILRFI : Voltage Detection GPU_BEAM_S : OFF GPU_PFB : OFF 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 : 3 # 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 -------------------------------- # GWB GAC configuration is as follows : # BEAM-4:130 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E05 E06 S01 S02 S03 S04 S06 W01 W02 W03 W04 W05 W06 Total=28 # BEAM-4:175 :: C00 C01 C02 C04 C05 C06 C08 C09 C10 C11 C12 C13 C14 E02 E03 E05 E06 S01 S02 S03 S04 S06 W01 W02 W03 W04 W05 W06 Total=28 -------------------------------- 00:00:19 : Started set-up. 00:10 - 00:35 : GSB : No self power and fringe in CH-1 for Y-array antennas, restarted GSB but problem not resolved. -------------------------------- 00:35:40 : Started scan on 3C48 for ~ 4.42918 min. 00:51:27 : Started scan on 0837-198 for ~ 8.27675 min. 01:03:02 : Started command file. /data1/gtac/cmd/43_112/43_112_5dec.py 07:00:00 : Stopped scan and observing session over. --------------------------------