/* ** ** Swift/XRT hardness ratio for 3C 273. ** Hardness ratio for this file has been calculated by splitting the data at 2.0 keV. ** ** Data taken from the automatic processing at http://www.swift.psu.edu/monitoring/ ** ** When using these data and results in publications, please reference M.C. Stroh & A.D. Falcone 2013, ApJS, 207, 28; arXiv: 1305.4949. ** ** Key: ** ** BinCenter - Center of time bin (MJD). ** BinHW - One-half of the full time bin size (days). ** FracExp - Conversion factor between bin size and observing time. ** Ratio - Source hardness ratio (2.0 - 10.0 keV)/(0.3 - 2.0 keV). ** This is also Rate2/Rate1 from the following columns. ** RatioError - 1 sigma error in the hardness ratio. ** Mode - 0 if in Windowed Timing (WT). ** 1 if in Photon Counting (PC). ** Rate1 - The background subtracted, PSF corrected and pile-up corrected source count rate (cts/s) in the 0.3 - 2.0 keV band. ** RateError1 - 1 sigma error in source count rate (cts/s) in the 0.3 - 2.0 keV band. ** NetRate1 - Background subtracted count rate (cts/s) in the 0.3 - 2.0 keV band. ** NetError1 - Error in the background subtracted count rate (cts/s) in the 0.3 - 2.0 keV band. ** Rate2 - The background subtracted, PSF corrected and pile-up corrected source count rate (cts/s) in the 2.0 - 10.0 keV band. ** RateError2 - 1 sigma error in source count rate (cts/s) in the 2.0 - 10.0 keV band. ** NetRate2 - Background subtracted count rate (cts/s) in the 2.0 - 10.0 keV band. ** NetError2 - Error in the background subtracted count rate (cts/s) in the 2.0 - 10.0 keV band. ** ** ** Upper limits have an error listed as -1.00000. ** */ BinCenter BinHW Ratio RatioError FracExp Mode Rate1 RateError1 NetRate1 NetError1 Rate1 RateError2 NetRate2 NetError2 56001.544799 0.001126 0.34205 0.02833 0.95630 0 3.94578 0.16319 3.10506 0.12841 1.34964 0.09686 1.06320 0.07629 56001.546260 0.000336 0.29007 0.04689 0.96552 0 3.87237 0.29741 3.06681 0.23554 1.12326 0.15978 0.88974 0.12656 56001.547531 0.000935 0.42756 0.03641 0.96285 0 3.76937 0.17531 2.98937 0.13903 1.61162 0.11496 1.27837 0.09119 56001.549521 0.001056 0.38378 0.03236 0.98630 0 3.62046 0.16161 2.87009 0.12811 1.38947 0.09940 1.10150 0.07880 56001.551573 0.000995 0.39155 0.03306 0.95640 0 3.86967 0.17149 3.06717 0.13593 1.51516 0.10887 1.20059 0.08627 56001.554047 0.001479 0.34375 0.02466 0.97847 0 3.94568 0.14319 3.10475 0.11267 1.35631 0.08392 1.06827 0.06610