GTAC Observation Log 1. Date : 17/11/2015 2. Observation Sr. No. : 8177 3. Observer : Sachindra Naik, A.R. Rao, Dipankar Bhattacharya, BHAL CHANDRA JOSHI, Biswajit Paul, Santosh Vadawale 4. Observer's Email : snaik.prl@gmail.com, arrao@tifr.res.in, dipankar@iucaa.ernet.in, bcj@ncra.tifr.res.in, bpaul@rri.res.in, santoshv@prl.res.in 5. Project Name : Simultaneous ASTROSAT and GMRT Observations of Crab Pulsar 6. Project Code : 29_065 7. Operator(s) : Pramod, Surender 8. Command File : /odisk/gtac/cmd 9. LTA File : /gsbifrdata/16nov/29_065_16nov2015.lta 10. LogFlag File : /odisk/online1/logflags/29_065.FLAGS.5 ANTENNA SETTINGS : 11. RF Band(MHz) & Solar Attn(dB)- RF1 : 1382 MHz ,RF2 : 1382 MHz, SA1 : 0 dB, SA2 : 0 dB 12. Ist LO (MHz) & IVth LO (MHz): ILO1 : 1320 MHz, ILO2 : 1320MHz , IVLO1 : 62 MHz, IVLO2 : 62 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 : OFF 20. Stokes : Total_Intensity 21. Beam - 1 : OFF 22. Beam - 2 : Volt 23. ACQ BW : 16.666666 MHz 24. Final BW : 16.666666 MHz; Step # 25. Maximum Channels : 256 26. Channel Numbers : 0:255:1 27. LO5 -1 : 138 28. LO5 -2 : 167 29. Frequency Parameters (TPA) : 1382 1382 1320 1320 62 62 30. Integration Time : 16.1061 Sec 31. No of Antennas Working(Fringing) at the beginning :26 32. Name of Non-Working Antennas (with reason for each) : C01 : : Low fringe. C09 : : Bad Bandshape. C11 : : CST painting. W03 : : BLDC. 33. Note for Backup : 34. Start and End Time of Obs.(IST): 16 Nov 2015 23:00:00 - 17 Nov 2015 00:07:00 35. ONLINE Machine : Shivneri 36. No of Antennas Working(Fringing) at the end :26 37. Comments (During Observations) : GAC Selection : CSQ (except C01,C02,C09,C11) +S01 +E02+W01 ------------------------------------------------------------ 23:00:00 : Started set-up. 23:10:16 : Power eq done on CRAB. 23:12:34 : Phasing done on 3C147. 23:19:12 : Started scan on B0531+21 for ~ 10 min. 23:30:00 : Started scan on B0531+21 for ~ 10 min. 23:42:00 : Started scan on B0531+21 for ~ 15 min. 00:04:12 : Started scan on 3C147 for ~ 1 min. 00:07:26 : Started scan on OFF +5D 3C147 for ~ 1.07374 min. 00:07:00 : Stopped scan and observing session is over.