About

[calendar]
start-of-week = sunday
start-date = 2015-09-14

[tab-home]
type = link
name = _Home
url = https://losc.ligo.org/detector_status/

[tab-summary]
type = plots
name = Summary
foreword = The plots shown below characterize the sensitivity and performance of each of the LIGO sites during the first observing run of the Advanced LIGO era, which began on September 18, 2015 and ended on January 13, 2016. For more information about the plots listed below, click on an image to read the caption. 
1 = /s/summary_pages/detector_status/cache/O1/H1L1-MULTI_BEF2A0_NETWORK_DUTY_PIE-1126623617-10026000.png
1-caption = This pie chart shows the fraction of single and double interferometer observing time for the Hanford and Livingston detectors.
2 = /s/summary_pages/detector_status/cache/O1/H1L1-MULTI_0E0EE3_SEGMENTS-1126623617-10026000.png
2-caption = This plot shows the instrument status for the Livingston (L1) and Hanford (H1) detectors, as well as the coincident time where both detectors were operational, over the course of the day. 
3 = /s/summary_pages/detector_status/cache/O1/H1L1-MULTI_892E4B_TIMESERIES-1126623617-10026000.png
3-caption = This plot shows the average sensitivity of the Livingston (L1) and Hanford (H1) detectors to gravitational wave signals from binary neutron star mergers, as measured in megaparsecs (where 1 megaparsec = 3,262,000 light-years), averaged over all sky positions and source orientations. The value reported in this plot is determined by comparing the noise curve to a predicted gravitational wave signal from a binary neutron star merger. The sharp drops in this curve are typically due to transient noise in the interferometer limiting sensitivity to gravitational waves.
4 = /s/summary_pages/detector_status/cache/O1/H1L1-MULTI_4B71CC_TIME_VOLUME-1126623617-10026000.png
4-caption = This plot shows the cumulative time-volume of the Livingston (L1) and Hanford (H1) detectors. This figure of merit multiplies the astrophysical volume that the detectors can observe by the amount of time spent observing, which allows LIGO scientists to calculate quantities such as the expected rate of gravitational wave signals.
layout = 2
afterword = This page is a product of the <a href='http://losc.ligo.org'>LIGO Open Science Center</a>. All data were recorded at the LIGO observatories in Hanford, Washington and Livingston, Louisiana, USA; see <a href='http://ligo.org'>ligo.org</a> for more information.