  ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). []{data-label="fig:lc_0"}](GRB000000A_survey.pdf "fig:"){width="00.00000%"} ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). []{data-label="fig:lc_0"}](GRB000000A_survey.pdf "fig:"){width="00.00000%"} ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). []{data-label="fig:lc_0"}](GRB000000_survey.pdf "fig:"){width="00.00000%"} ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). []{data-label="fig:lc_0"}](GRB000000_survey.pdf "fig:"){width="00.00000%"} ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). []{data-label="fig:lc_0"}](GRB000000B_survey.pdf "fig:"){width="00.00000%"} ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). []{data-label="fig:lc_0"}](GRB000000B_survey.pdf "fig:"){width="00.00000%"}  ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). []{data-label="fig:lc_0"}](GRB000000B_survey.pdf "fig:"){width="00.00000%"} ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). []{data-label="fig:lc_0"}](GRB000000_survey.pdf "fig:"){width="00.00000%"} ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). []{data-label="fig:lc_0"}](GRB000000A_survey.pdf "fig:"){width="00.00000%"} ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). []{data-label="fig:lc_0"}](GRB000000A_survey.pdf "fig:"){width="00.00000%"} ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). []{data-label="fig:lc_0"}](GRB000000A_survey.pdf "fig:"){width="00.00000%"}  ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. These GRBs have late time BAT emissions that do not match the XRT emissions extrapolated to the same energy range. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). For GRB000000A, we plot the BAT $T_{000}$ flux instead because there are no BAT fluxes produced by the Burst Analyser [@Evans00] for this burst. []{data-label="fig:lc_weird"}](GRB000000_survey.pdf "fig:"){width="00.00000%"} ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. These GRBs have late time BAT emissions that do not match the XRT emissions extrapolated to the same energy range. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). For GRB000000A, we plot the BAT $T_{000}$ flux instead because there are no BAT fluxes produced by the Burst Analyser [@Evans00] for this burst. []{data-label="fig:lc_weird"}](GRB000000_survey.pdf "fig:"){width="00.00000%"} ![ Comparisons between detections in the BAT survey data, BAT event data, and the XRT data. These GRBs have late time BAT emissions that do not match the XRT emissions extrapolated to the same energy range. The end of $T_{000}$ is marked as black-dashed line in each figure. If the burst emissions extend beyond the event data range, the black-dashed line marks the lower-limit of $T_{000}$ (i.e., the end of $T_{000}$ found by [*battblocks*]{}, or the end of the event data range if [*battblocks*]{} failed to estimate the burst durations). For GRB000000A, we plot the BAT $T_{000}$ flux instead because there are no BAT fluxes produced by the Burst Analyser [@Evans00] for this burst. []{data-label="fig:lc_weird"}](GRB000000_survey.pdf "fig:"){width="00.00000%"}  ![ Precursor detections in the BAT survey data, overlayed on the BAT event data and XRT data for comparison. The x-axes are shifted to avoid negative regions in the plots. The BAT trigger times $T0$ are marked as green-dashed lines. Both the start and stop time of $T_{000}$ are marked as black-dashed line for GRB000000D. These times are labeled as upper and lower limits because the burst emission extends beyond the event data range, that is, the burst starts before $T^{\rm start}_{000}$ and ends after $T^{\rm stop}_{000}$. The $T_{000}$ range (from $T0-0.00$ to $T0+00.00$s) for GRB000000A is not marked because it appears very close to the $T0$ line on the plot. []{data-label="fig:lc_precursor"}](GRB000000