The Neil Gehrels Swift Observatory

Data Guide for Early Swift GRB Observations

Swift has observed a number of GRBs during the commissioning phase. Since the instruments were in the process of early check-out and calibration activities, this has resulted in peculiarities in the GRB data sets that are described in the table below. If you encounter a anomaly or undocumented problem in a GRB observation, please report your finding through the feedback form so we can document it here.

Burst General Notes BAT Notes XRT Notes UVOT Notes OBSID
041217 no AT, no TOO moderate GRB no observation no observation trigger 100116; data in 00060010002
041219 no AT, no TOO bright GRB, 500 s duration, images by IBIS/ISGRI. Event data lost due to SSR dump error no observation no observation trigger 100318; data in 00060000256
041219b no AT, no TOO moderate GRB no observation no observation trigger 100367; data in 00060010257
041219c no AT, no TOO weak GRB no observation no observation trigger 100380; data in 00060010257
041220 no AT, no TOO weak GRB no observation no observation 00100433
041223 TOO 4.5 hr later moderate GRB observation from 4.5 to 7.8 hr. CCD T > -50 no observation 00100585
0412224 no AT, no TOO weak GRB no observation no observation 00100703
041226 no AT, no TOO weak GRB no observation no observation 00100815
SGR 1806-20 041227 flare no AT, no TOO giant flare, detected outside BAT FoV at 21:30:26 no observation no observation
start t seq.
19:57:19 00053560001
20:27:02 00053580001
20:46:02 00053570001
21:25:02 00060007002
21:31:02 00050800007
21:33:19 00053560001
21:56:02 00053580001
22:22:02 00053570001
041228 no AT, no TOO weak GRB no observation no observation 00100970
050117 first AT slew to GRB moderate GRB First data acquired during SAA . XRT operating in Auto mode. SAA mode checking switched off in orbit after burst detected. Data complicated by instrumental effects. no observation 00102861
050117b no AT, no TOO weak GRB no observation no observation 00102899
050124 TOO 3 hr later weak GRB moderate afterglow, auto state. All XRT modes. observation no detection, 21 mag limit 00103647
050126 AT weak GRB bright afterglow, Manual State, PC mode, mixture of data with mkn876 (seq 00050300005) no observation, bright star within 4 degrees 00103780
050128 AT
Note: Due to an error in the data ingest system, all files currently available for this burst are corrupted. It is expected that this problem will resolve upon reingest. Please check back at a later date for data from this burst.		 moderate GRB weak afterglow, PC mode. XRT manual state. no observation, safed during slew. TOO 12 hr later, no detection 00103906
050202 no AT, no TOO (near Sun) first short GRB no observation no observation 00104298
050215a AT soft GRB auto state no detection 00106106
050215b AT x-ray flash auto state marginal detection in V, 21.7 mag 00106107
050219a AT moderate GRB auto state no detection 00106415
050219b Earth limb delay, AT moderate GRB auto state no detection 00106442
050223 Earth limb delay, AT weak GRB PC mode no detection 00107574

NB this is a relatively new document and will take some time to mature. We will add bursts to this list as they are observed.