GTAC Observation Log 1. Date : 03/06/2020 2. Observation Sr. No. : 12076 3. Observer : Devojyoti Kansabanik, Bhaswati Bhattacharyya 4. Observer\'s Email : dkansabanik@ncra.tifr.res.in, bhaswati.bhattacharyya78@gmail.com 5. Project Name : Investigation of eclipse properties of 10 black-widow millisecond pulsars 6. Project Code : 38_020 7. Operator(s) : Sachin 8. Command File : /odisk/gtac/cmd/devjyoti/1.cmd 9. LTA File : /gsbifrdata/03jun/38_020B_03jun2020_band3.lta, /gsbifrdata/03jun/38_020A_03jun2020_band2.lta, /gwbifrdata2/03jun/38_020B_03jun2020_band3_gwb.lta.1, /gwbifrdata2/03jun/38_020B_03jun2020_band3_gwb.lta, /gwbifrdata2/03jun/38_020A_03jun2020_band2_gwb.lta.1, /gwbifrdata2/03jun/38_020A_03jun2020_band2_gwb.lta 10. LogFlag File : /odisk/online1/logflags/38_020B.FLAGS, /odisk/online1/logflags/38_020A.FLAGS 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 15. GSB Mode : Realtime 16. GSB LTA : 8 17. GSB CTRL : ONLINE 18. GSB Fstop : ON 19. GAIN EQ : OFF 20. Stokes : Total_Intensity 21. Beam - 1 : PA 22. Beam - 2 : PA 23. ACQ BW : 33.333333 MHz 24. Final BW : 0 MHz; Step # 0 25. Maximum Channels : 512 26. Channel Numbers : 0:511:1 27. LO5 -1 : 149 28. LO5 -2 : 156 29. Frequency Parameters (TPA) : 306 306 255 255 51 51 30. Integration Time : 2.0132 Sec 31. No of Antennas Working(Fringing) at the beginning :25 32. Name of Non-Working Antennas (with reason for each) : C03 : Taken for Mech Work. E02 : No fringe. W05 : MCM-5 time-out. W01 : Parked. W03 : Parked. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 03 Jun 2020 02:00:00 - 03 Jun 2020 05:55:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :25 37. RFI Status : 38. Comments (During Observations) : ------------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_RF3 : 280 280 GPU_DDCLO3 : 0.0000 0.0000 GPU_SB3 : 1 1 GCODE3 : 38_020A GPU_RF4 : 250 250 GPU_DDCLO4 : 0.0000 0.0000 GPU_SB4 : -1 -1 GCODE4 : 38_020B GPU_CNTRL : ONLINE GPU_FSTOP : ON GPU_BEAM_1 : Voltage GPU_BEAM_2 : Voltage GPU_BEAM_3 : PA GPU_BEAM_4 : OFF GPU_BM_INT : 4 GPU_GAINEQ : OFF GPU_TPA : From GWB GUI. GPU_BITS : 8 Bits GPU_FILRFI : RFI Filterring OFF GPU_BEAM_S : OFF -------------------------------- # GWB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C02 C04 C06 C08 C10 C11 C13 S01 W02 Total=11 # BEAM-1:175 :: C00 C01 C02 C04 C06 C08 C10 C11 C13 S01 W02 Total=11 # BEAM-2:130 :: C05 C09 C12 C14 E03 S02 S03 W01 W03 Total=9 # BEAM-2:175 :: C05 C09 C12 C14 E03 S02 S03 W01 W03 Total=9 # BEAM-3:130 :: C05 C09 C12 C14 E03 S02 S03 W01 W03 Total=9 # BEAM-3:175 :: C05 C09 C12 C14 E03 S02 S03 W01 W03 Total=9 # GSB GAC configuration is as follows : # BEAM-1:130 :: C00 C01 C02 C04 C08 C11 C13 S01 W02 Total=9 # BEAM-1:175 :: C00 C01 C02 C04 C08 C11 C13 S01 W02 Total=9 # BEAM-2:130 :: C00 C01 C02 C04 C08 C11 C13 S01 W02 Total=9 # BEAM-2:175 :: C00 C01 C02 C04 C08 C11 C13 S01 W02 Total=9 Started setup at 2:00, since observer don\'t wanted pointing. Completed setup at 2:30 Hrs. Phasing was not happening due to RFI, 02:35 : Restarted GWB correlator. Still phasing was not happening. 02:39:13 : Started scan on 1830-360 for ~ 2.32644 min. 02:41:45 : Started scan on 1830-360 for ~ 4.5634 min. 02:46:25 : Started scan on 1830-360 for ~ 5.27923 min. 02:51:54 : Started scan on 1830-360 for ~ 12.348 min. 03:04:23 : Started scan on 1830-360 for ~ 0.626349 min. 03:12:24 : Started scan on 1830-360 for ~ 3.40018 min. 03:16:49 : Started scan on 1830-360 for ~ 3.40018 min. 03:25:48 : Started scan on J1807-2459A for ~ 75.6093 min. CDP for beam2 was not working. Tried to start it manually but couldn\'t do it. Continued observation for beam1 and beam3 for GWB and for beam1 and beam2 for GSB. 04:45:47 : Started scan on 1830-360 for ~ 3.22122 min. 04:50:04 : Started scan on 1830-360 for ~ 3.3107 min. 04:54:16 : Started scan on J1807-2459A for ~ 60.4874 min. 05:54 : Closed observation session.