GTAC Observation Log 1. Date : 29/10/2017 2. Observation Sr. No. : 9817 3. Observer : Yashwant Gupta, BHAL CHANDRA JOSHI, Nikhil Vijay Naik, Kishalay De, Yogesh Maan, Manjari Bagchi, Jayanta Roy, Gopakumar Achamveedu 4. Observer's Email : ygupta@ncra.tifr.res.in, bcj@ncra.tifr.res.in, naiknikhil27@gmail.com, ugkishalayde@ug.iisc.in, ymaan@ncra.tifr.res.in, manjari.bagchi@gmail.com, jroy@ncra.tifr.res.in, gopu.tifr@gmail.com 5. Project Name : Towards precision pulsar timing with the upgraded GMRT 6. Project Code : 33_076 7. Operator(s) : Rupsing 8. Command File : /odisk/gtac/cmd/cmdfile_33_076_3-freqs_4-beams_S1_29oct17.txt 9. LTA File : /gwbifrdata1/29oct/33_076_29oct2017_750_gwb.lta, /gwbifrdata1/29oct/33_076_29oct2017_500_gwb.lta, /gwbifrdata1/29oct/33_076_29oct2017_1460_gwb.lta 10. LogFlag File : /odisk/online1/logflags/33_076C.FLAGS.3, /odisk/online1/logflags/33_076B.FLAGS.3, /odisk/online1/logflags/33_076.FLAGS.3 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1454 MHz ,RF2 : 1454 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1505 MHz, ILO2 : 1505MHz , 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 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) : 1454 1454 1505 1505 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) : W03 : Servo problem. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 29 Oct 2017 01:00:00 - 29 Oct 2017 06:05:00 35. ONLINE Machine : Lenyadri 36. No of Antennas Working(Fringing) at the end :29 37. Comments (During Observations) : ------------GWB Setting--------- GPU_MODE : Realtime GPU_LTA : 4 GPU_ACQ_BW : 200.0000 GPU_FINAL_BW : 200.0000 GPU_EDGE_FRQ : 0 GPU_CHAN_MAX : 2048 GPU_CHAN_NUM : 0:2047:1 GPU_STOKES : Total_Intensity GPU_SIDEBAND : 1 1 GPU_RF2 : 500 500 GPU_DDCLO2 : 0.0000 0.0000 GPU_SB2 : 1 1 GCODE2 : 33_076B GPU_RF3 : 750 750 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : 33_076C GPU_RF4 : 1460 1460 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : 1 1 GCODE4 : 33_076 GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : Voltage GPU_BEAM_2 : PA GPU_BEAM_3 : PA GPU_BEAM_4 : PA GPU_BM_INT : 8 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 64 inputs. GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------------------------------------------------- # 325Mhz #sub 2 # C01 C04 C06 W01 S01 # 610 Mhz # sub 3 # C02 C03 C09 W02 E03 S02 # 1420 Mhz #sub 4 # C00 C05 C08 C10 C11 C12 C13 C14 W03 W04 W05 W06 E02 E04 E05 E06 S03 S04 S06 ------------------------------------------------------------------------ # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C05 C08 C10 C11 C12 C13 E02 E04 E06 S03 S04 S06 W04 W05 W06 Total=16 # BEAM-1:175 :: C00 C05 C08 C10 C11 C12 C13 E02 E04 E06 S03 S04 S06 W04 W05 W06 Total=16 # BEAM-2:130 :: C01 C04 C06 S01 W01 Total=5 # BEAM-2:175 :: C01 C04 C06 S01 W01 Total=5 # BEAM-3:130 :: C00 C05 C08 C10 C11 C12 C13 E02 E04 E06 S03 S04 S06 W04 W05 W06 Total=16 # BEAM-3:175 :: C00 C05 C08 C10 C11 C12 C13 E02 E04 E06 S03 S04 S06 W04 W05 W06 Total=16 # BEAM-4:130 :: C02 C03 C09 E03 S02 W02 Total=6 # BEAM-4:175 :: C02 C03 C09 E03 S02 W02 Total=6 -------------------------------------------------------------------------- 00:40 : Power eq on 3C48. 00:50 : Phasing on 3C48. 01:05 : Started command file. ------------------------------------------------------------------------- 01:50 : PA voltage mode with CD pipeline not working. ------------------------------------------------------------------------- 02:50 : PA voltage mode with CD pipeline working. ------------------------------------------------------------------------- 03:22 : PA voltage mode with CD pipeline not working. ------------------------------------------------------------------------- 03:56 : PA voltage mode with CD pipeline working. ------------------------------------------------------------------------- 04:26 : PA voltage mode with CD pipeline not working. ------------------------------------------------------------------------- 05:51 : Stopped command file due to phase cal and source not available(rise @ 09:27) ------------------------------------------------------------------------- 05:55 : Observation closed.