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Anomalies of HSC's CCDs

Focal plane CCD format

See also the CCD arrangement diagram.

Major Issues

More details can be found here.

DET-ID SDO-ID Channel Period (UT) Case Details
000 1_53 ch3 2014/06/24– No sensitivity Link
009 1_47 ch1–4 2014/04/03–2018/01/18(1) Saturation/anomaly patterns Link
021 1_34 ch1–4 2025/04/26–2025/05/07(2) Read-out failure Link
033 0_20 ch1–4 2013/10/29– Saturation/anomaly patterns Link
043 1_09 ch4 2016/03/04–2018/04/24 Intermittent anomaly patterns Link
094 0_43 ch2 2014/03/25– Poor linearity Link

Notes:
  1.  Read-out for CCD 009 (1_47) has been disabled since February 2018.
  2.  Read-out for CCD 021 (1_34) has been disabled since July 2025.

Minor Issues

More details can be found here.

DET-ID SDO-ID Channel Period (UT) Case Details
006 1_44 ch4 2014/03/25– A bright spot Link
010 1_36 ch3 2014/03/25– A bright spot Link
021 1_34 ch1–4
ch2
ch1–4
ch1–4
ch2
2023/08/15
2023/09/15
2023/09/15
2023/09/15
2025/04/25
Partial read-out failure
Noisy bias
Partial read-out failure
Full read-out failure
Noisy bias
Link
041 0_16 ch1 2021/10/01– Light emission Link
043 1_09 ch4
ch4
ch4
ch4
2015/03/31–
2015/11/06–2016/02/03
2016/03/03–2019/02/13
2018/11/07–2018/11/12
Light emission
Light emission
Light emission
Light emission
Link
050 1_12 ch2
ch3
2019/05/28–
2014/03/25–
Light emission
A bright spot
Link
074 1_24 ch2 2014/06/30– Light emission Link

Cable Tie Issues

More details can be found here. You can also see the summary report here.

DET-ID SDO-ID Channel Period (UT) Case Details
000 1_53 ch4
ch4
2022/05/26–2022/05/27
2022/06/29–2022/06/30
Shadow
Shadow
Link
Link
003 1_56 ch4 2025/01/02–2025/07/17 Shadow Link
004 1_42 ch1
ch1
ch1
ch1
ch2,3
ch1,2,3
ch1
2020/03/03–2020/03/19
2020/03/19
2020/05/24–2020/05/25
2020/10/20–2021/01/07
2023/01/15–2023/01/16
2024/07/04
2024/08/06
Shadow
Light emission
Shadow
Shadow
Shadow and light emission
Shadow
Shadow
Link
Link
Link
Link
Link
Link
Link
022 0_27 ch1
ch1
ch1
ch1
ch1
ch1,2
ch1
ch1
ch1
ch1
2018/11/03
2018/12/08–2018/12/09
2018/12/11–2018/12/14
2022/06/28–2022/07/01
2023/01/16–2023/01/17
2023/03/27–2023/05/24
2023/05/24
2024/04/11
2024/12/03
2025/04/24
Light emission
Shadow
Shadow
Shadow
Shadow
Shadow
Light emission
Shadow
Shadow
Shadow and light emission
Link
Link
Link
Link
Link
Link
Link
Link
Link
Link
029 1_03 ch4
ch4
2020/11/11–2020/11/13
2025/03/03–2025/03/04
Shadow
Shadow
Link
Link
030 0_23 ch1 2025/01/02 Shadow and light emission Link
037 1_07 ch3 2024/07/08 Shadow Link
038 0_19 ch2,3
ch4
2023/01/20
2024/12/24
Shadow
Shadow
Link
Link
046 0_15 ch1,4 2024/12/24 Shadow Link
053 1_15 ch2,3 2021/02/06 Shadow Link
054 0_11 ch1 2024/12/24 Shadow Link
061 1_19 ch1,2
ch3
ch1,2,3
ch1
2018/01/18–2018/02/12
2023/01/22
2023/01/25
2024/12/05–2024/12/22
Shadow
Shadow
Shadow
Shadow
Link
Link
Link
Link
062 0_07 ch3,4
ch4
ch2,3
2021/01/09–2021/01/18
2022/10/19
2023/01/20
Light emission
Shadow
Shadow and light emission
Link
Link
Link
069 1_23 ch4
ch2
ch2,3,4
2023/01/15
2024/06/13
2024/10/06
Shadow
Shadow
Shadow
Link
Link
Link
070 0_03 ch1
ch1,2,3
ch3,4
ch4
2019/03/29
2023/01/20
2024/12/23
2025/05/07
Shadow
Light emission
Shadow and light emission
Shadow
Link
Link
Link
Link
077 1_27 ch1
ch1,2
ch1,2
ch1
ch1
ch1
2021/01/18
2023/05/24
2023/06/16
2024/06/13
2025/05/07
2025/07/17
Shadow
Shadow
Shadow
Shadow
Shadow
Shadow
Link
Link
Link
Link
Link
Link
090 0_47 ch2,3
ch1,2
ch3,4
2021/06/10
2024/04/03
2024/12/28–2025/01/03
Light emission
Shadow
Light emission
Link
Link
Link
095 0_42 ch1,2
ch1
ch1,2
ch1
ch2
2021/01/15–2021/01/18
2022/06/05–2022/06/07
2022/06/28–2022/07/06
2023/09/08
2025/05/07
Shadow
Shadow
Shadow
Shadow
Shadow
Link
Link
Link
Link
Link
099 0_53 ch4 2025/07/18 Shadow Link
100 0_31 ch1,2
ch3,4
ch1,2
ch4
ch3,4
ch4
ch3,4
ch3,4
ch1
ch3
ch1,2,3
ch4
ch4
ch3,4
2020/10/20–2020/10/23
2022/06/28–2022/07/01
2023/01/15
2023/01/16
2023/03/27–2023/03/29
2023/05/15–2023/05/16
2023/05/23
2023/05/24–2023/05/25
2023/06/16
2024/06/28
2024/10/03
2024/12/03
2025/01/02
2025/04/24
Shadow and light emission
Shadow
Shadow
Shadow
Shadow
Shadow and light emission
Shadow
Shadow
Shadow
Shadow
Shadow and light emission
Shadow
Light emission
Light emission
Link
Link
Link
Link
Link
Link
Link
Link
Link
Link
Link
Link
Link
Link
101 1_35 ch1
ch1,2
2020/11/11–2020/11/13
2025/03/03–2025/03/04
Shadow
Shadow
Link
Link
102 0_35 ch1
ch1
ch1
ch1
2018/12/30
2023/06/16–2023/06/17
2024/11/28–2024/11/29
2024/12/23–2025/01/05
Shadow
Shadow and light emission
Light emission
Light emission and shadow
Link
Link
Link
Link
103 1_31 ch4
ch1
ch1
ch3,4
2017/12/24
2022/06/28
2023/09/08
2025/05/07
Shadow
Shadow
Shadow
Shadow
Link
Link
Link
Link
104 1_48 ch4
ch1,4
ch4
ch1,2
ch2,3
ch4
ch4
ch1,4
ch4
2017/06/29
2021/02/10
2021/02/10–2021/02/11
2021/10/28
2023/05/12
2023/05/24
2024/06/28
2024/08/05
2025/01/07
Shadow and light emission
Shadow
Shadow and light emission
Shadow and light emission
Light emission
Light emission
Light emission
Light emission
Light emission
Link
Link
Link
Link
Link
Link
Link
Link
Link
105 1_51 ch3,4
ch3,4
2023/03/19
2023/05/24
Shadow and light emission
Shadow and light emission
Link
Link
106 1_52 ch4
ch4
ch4
ch4
2021/06/09–2021/06/10
2022/05/26–2022/05/27
2022/06/29–2022/07/04
2025/04/24
Shadow and light emission
Shadow and light emission
Shadow and light emission
Light emission
Link
Link
Link
Link
108 0_57 ch4
ch3,4
2022/10/30
2022/10/30
Shadow
Shadow
Link
Link
110 0_51 ch4 2024/12/27 Light emission Link

Major Issues

DET-ID = 000 (SDO-ID = 1_53)

Channel Frame ID Period (UT) Case
ch3 HSCA00226153–latest 2014/06/24– High bias level and no sensitivity


★ Raw images


DET-ID = 009 (SDO-ID = 1_47)

Channel Frame ID Period (UT) Case
ch1 HSCA00183747–HSCA13846347 2014/04/03–2018/01/18 Saturation
ch2 HSCA00343747–HSCA13846347 2014/06/30–2018/01/18 Saturation
ch3,4 HSCA10897547–HSCA13846347 2017/04/02–2018/01/18 Anomaly patterns due to crosstalk

Note: Read-out for this CCD has been disabled since 2018/02/08 UT.


★ Bias frames (raw)


DET-ID = 021 (SDO-ID = 1_34)

Channel Frame ID Period (UT) Case
ch1–4 HSCA35932334–HSCA36271534 2025/04/26–2025/05/07 Read-out failure over the entire surface + stripe-like noises on the neighbor CCDs (see the report)

Note: Read-out for this CCD has been disabled since 2025/07/17 UT.


★ Combined bias frames (overscan subtracted)


DET-ID = 033 (SDO-ID = 0_20)

Channel Frame ID Period (UT) Case
ch1,2 HSCA26183220– 2021/08/31– Anomaly pattern
ch3 HSCA09224620–HSCA11034620
HSCA11034820–
2016/12/23–2017/04/04
2017/04/20–
Anomaly pattern β†’ saturation
Saturation
ch4 HSCA00013620–HSCA08943820
HSCA08945620–
2013/10/29–2016/10/07
2016/11/22–
Light emission from the channel corner
Saturation/blank


★ Bias frames (raw)


DET-ID = 043 (SDO-ID = 1_09)

Channel Frame ID Period (UT) Case
ch4 HSCA05806709–HSCA14765709 2016/03/04–2018/04/24 Anomaly bias patterns with
significantly high counts (intermittently)


DET-ID = 094 (SDO-ID = 0_43)

Channel Frame ID Period (UT) Case
ch2 HSCA00021243– 2014/03/25– Poor linearity


★ Flat-fielded object frame   /   Dome flat counts with low illuminance


Minor Issues

DET-ID = 006 (SDO-ID = 1_44)

Channel Frame ID Period (UT) Case
ch4 HSCA00021344– 2014/03/25– A bright spot


★ Dome flat frame (overscan subtracted)


DET-ID = 010 (SDO-ID = 1_36)

Channel Frame ID Period (UT) Case
ch3 HSCA00021336– 2014/03/25– A bright spot


★ Dome flat frame (overscan subtracted)


DET-ID = 021 (SDO-ID = 1_34)

Channel Frame ID Period (UT) Case
ch1 – 4 HSCA31425134 2023/08/15 Partial read-out failure
ch2 HSCA32003734–HSCA32005334 2023/09/15 Noisy bias
ch1 – 4 HSCA32005334 2023/09/15 Partial read-out failure
ch1 – 4 HSCA32005534–HSCA32016934 2023/09/15 Full read-out failure
ch2 HSCA35914534–HSCA35915134 2025/04/25 Noisy bias


★ Bias/object frames (overscan subtracted)



★ Bias frames (overscan subtracted)


DET-ID = 041 (SDO-ID = 0_16)

Channel Frame ID Period (UT) Case
ch1 HSCA26505616– 2021/10/01– Weak light emission from the edge


★ Dark frames (overscan subtracted)


DET-ID = 043 (SDO-ID = 1_09)

Channel Frame ID Period (UT) Case
ch4 HSCA02758109– 2015/03/31– Weak light emission from the upper right corner
of the CCD in Focal plane image
ch4 HSCA04442709–HSCA05383109 2015/11/06–2016/02/03 Strong light emission from the lower right corner
of the CCD in Focal plane image
ch4 HSCA05803709–HSCA16530109 2016/03/03–2019/02/13 Light emission along the right edge of the CCD
in Focal plane image
ch4 HSCA14898909–HSCA14984509 2018/11/07–2018/11/12 Strong light emission from the lower right corner
of the CCD in Focal plane image


DET-ID = 050 (SDO-ID = 1_12)

Channel Frame ID Period (UT) Case
ch2 HSCA17875112– 2019/05/28– Light emission from the edge
ch3 HSCA00021312– 2014/03/25– A bright spot


★ Dark/domeflat frames (overscan subtracted)


DET-ID = 074 (SDO-ID = 1_24)

Channel Frame ID Period (UT) Case
ch2 HSCA00343724– 2014/06/30– Light emission from the edge


★ Dark frame (overscan subtracted)


Cable Tie Issues


Case # Date (UT) CCD Channel Frame ID Event
Case 01 2017/06/29 104 (1_48) ch4 HSCA11989748–HSCA12003548 Shadow and light emission
Case 02 2017/12/24 103 (1_31) ch4 HSCA13469331–HSCA13497931 Shadow
Case 03 2018/01/18–2018/01/02/12 061 (1_19) ch1,2 HSCA13834519–HSCA13985519 Shadow
Case 04 2018/11/03 022 (0_27) ch1 HSCA14835027–HSCA14842627 Light emission
Case 05 2018/12/08–2018/12/09
2018/12/11–2018/12/14
022 (0_27) ch1,2
ch1
HSCA15545227–HSCA15664227
HSCA15757427–HSCA15878027
Shadow
Shadow
Case 06 2018/12/30 102 (0_35) ch1 HSCA15906035–HSCA15907235 Shadow
Case 07 2019/03/29 070 (0_03) ch1 HSCA17090403–HSCA17111403 Shadow
Case 08 2020/03/03–2020/03/19
2020/03/19
004 (1_42)
004 (1_42)
ch1
ch1
HSCA21249142–HSCA21260142
HSCA21260542–HSCA21263942
Shadow
Light emission
Case 09 2020/05/24–2020/03/25 004 (1_42) ch1 HSCA21599942–HSCA21633342 Shadow
Case 10 2020/10/20–2021/01/07
2020/10/20–2020/10/23
004 (1_42)
100 (0_31)
ch1
ch1,2
HSCA23191142–HSCA24366942
HSCA23191231–HSCA23325231
Shadow
Shadow and light emission
Case 11 2020/11/11–2020/11/13
2020/11/11–2020/11/13
029 (1_03)
101 (1_35)
ch4
ch1
HSCA23503103–HSCA23573303
HSCA23503135–HSCA23573335
Shadow
Shadow
Case 12 2021/01/09–2021/01/18 062 (0_07) ch3,4 HSCA24489407–HSCA24838207 Light emission
Case 13 2021/01/15–2021/01/18 095 (0_42) ch1,2 HSCA24717642–HSCA24822642 Shadow
Case 14 2021/01/18 077 (1_27) ch1 HSCA24808727–HSCA24822727 Shadow
Case 15 2021/02/06 053 (1_15) ch2,3 HSCA24863315–HSCA24865115 Shadow
Case 16 2021/02/10
2021/02/10–2021/02/11
104 (1_48)
104 (1_48)
ch1,4
ch4
HSCA25128948–HSCA25154348
HSCA25171548–HSCA25200548
Shadow
Shadow and light emission
Case 17 2021/06/09–2021/06/10 106 (1_52) ch4 HSCA25561552–HSCA25576352 Shadow and light emission
Case 18 2021/06/10 090 (0_47) ch2,3 HSCA25570847–HSCA25582447 Light emission
Case 19 2021/10/28 104 (1_48) ch1,2 HSCA26812548–HSCA26817348 Shadow and light emission
Case 20 2022/05/26–2022/05/27
2022/05/26–2022/05/27
000 (1_53)
106 (1_52)
ch4
ch4
HSCA27987953–HSCA28088953
HSCA27987952–HSCA28089952
Shadow
Shadow and light emission
Case 21 2022/06/05–2022/06/07
2022/06/28–2022/07/06
2022/06/28
095 (0_42)
095 (0_42)
103 (1_31)
ch1
ch1,2
ch1
HSCA28430842–HSCA28573442
HSCA28622442–HSCA28883842
HSCA28578331–HSCA28622331
Shadow
Shadow
Shadow
Case 22 2022/06/28–2022/07/01 022 (0_27)
100 (0_31)
ch1
ch1,2
HSCA28575827–HSCA28768227
HSCA28575831–HSCA28768231
Shadow
Shadow
Case 23 2022/06/29–2022/06/30
2022/06/29–2022/07/04
000 (1_53)
106 (1_52)
ch4
ch4
HSCA28655953–HSCA28731953
HSCA28626552–HSCA28814952
Shadow
Shadow and light emission
Case 24 2022/10/19 062 (0_07) ch4 HSCA28890007–HSCA28931807 Shadow
Case 25 2022/10/30 108 (0_57) ch4 HSCA29275257–HSCA29278457 Shadow
Case 26 2023/01/15–2023/01/16
2023/01/15–2023/01/16
2023/01/15
2023/01/16
2023/01/16–2023/01/17
2023/01/20
2023/01/20
2023/01/20
2023/01/20
004 (1_42)
004 (1_42)
100 (0_31)
100 (0_31)
022 (0_27)
038 (0_19)
062 (0_07)
062 (0_07)
070 (0_03)
ch2,3
ch2,3
ch2,3
ch1,2
ch1
ch2,3
ch2,3
ch2
ch1,2,3
HSCA29577542–HSCA29610342
HSCA29593342–HSCA29606342
HSCA29574631–HSCA29577231
HSCA29621431
HSCA29621627–HSCA29671027
HSCA29787819–HSCA29791619
HSCA29787807–HSCA29789407
HSCA29789607–HSCA29879807
HSCA29787803–HSCA29791603
Shadow
Light emission
Shadow
Shadow
Shadow
Shadow
Light emission
Shadow
Light emission
Case 27 2023/01/15
2023/01/22
2023/01/25
069 (1_23)
061 (1_19)
061 (1_19)
ch4
ch3
ch1,2,3
HSCA29530723–HSCA29592723
HSCA29878519–HSCA29878919
HSCA30024319–HSCA30024519
Shadow
Shadow
Shadow
Case 28 2023/03/19 105 (1_51) ch3,4 HSCA30156351–HSCA30167351 Shadow and light emission
Case 29 2023/03/27–2023/05/24
2023/03/27–2023/03/29
2023/05/15–2023/05/16
2023/05/15–2023/05/16
2023/05/23
2023/05/23
2023/05/24–2023/05/25
2023/06/16
022 (0_27)
100 (0_31)
100 (0_31)
100 (0_31)
100 (0_31)
022 (0_27)
100 (0_31)
100 (0_31)
ch1,2
ch3,4
ch4
ch4
ch3,4
ch1
ch3,4
ch1
HSCA30483027–HSCA30863627
HSCA30483031–HSCA36528831
HSCA30732831–HSCA30750431
HSCA30738431–HSCA30749231
HSCA30815831–HSCA30841631
HSCA30841827–HSCA30850427
HSCA30866431–HSCA30826431
HSCA30977431
Shadow
Shadow
Shadow
Light emission
Shadow
Light emission
Shadow
Shadow
Case 30 2023/05/12
2023/05/24
104 (1_48)
104 (1_48)
ch2,3
ch4
HSCA30658948–HSCA30669148
HSCA30916148–HSCA30923748
Light emission
Light emission
Case 31 2023/05/24
2023/06/16
077 (1_27)
077 (1_27)
ch1,2
ch1,2
HSCA30866527–HSCA30914727
HSCA30977527–HSCA30977927
Shadow
Shadow
Case 32 2023/05/24 105 (1_51) ch3,4 HSCA30914951–HSCA30923751 Shadow and light emission
Case 33 2023/06/16–2023/06/17 102 (0_35) ch1 HSCA30981235–HSCA31028635 Shadow and light emission
Case 34 2023/09/08 095 (0_42)
103 (1_31)
ch1
ch1
HSCA31694242–HSCA31716842
HSCA31694331–HSCA31716931
Shadow
Case 35 2024/04/03 090 (0_47) ch1,2 HSCA32080447–HSCA32083647 Shadow
Case 36 2024/04/11 022 (0_27) ch1 HSCA32375827–HSCA32378227 Shadow
Case 37 2024/06/13 077 (1_27)
069 (1_23)
ch1
ch2
HSCA32601327–HSCA32618927
HSCA32609923–HSCA32618923
Shadow
Shadow
Case 38 2024/06/28 100 (0_31) ch3 HSCA32681431–HSCA32683231 Shadow
Case 39 2024/06/28 104 (1_48) ch4 HSCA32683548–HSCA32686748 Light emission
Case 40 2024/07/04
2024/08/06
004 (1_42)
004 (1_42)
ch1,2,3
ch1
HSCA32917542–HSCA32952542
HSCA33409542–HSCA33414542
Shadow
Shadow
Case 41 2024/07/08 037 (1_07) ch3 HSCA33034907–HSCA33044107 Shadow
Case 42 2024/08/05 104 (1_48) ch1,4 HSCA33383748–HSCA33389148 Light emission
Case 43 2024/10/03
2024/10/03
100 (0_31)
100 (0_31)
ch1,2,3
ch2,3
HSCA33890631–HSCA33890831
HSCA33891031–HSCA33892831
Light emission
Shadow
Case 44 2024/10/06 069 (1_23) ch2,3,4 HSCA33989523–HSCA33999123 Shadow
Case 45 2024/11/28–2024/11/29 102 (0_35) ch1 HSCA34172235–HSCA34225435 Light emission
Case 46 2024/12/03 022 (0_27)
100 (0_31)
ch1
ch4
HSCA34375627–HSCA34389627
HSCA34375631–HSCA34389631
Shadow
Shadow
Case 47 2024/12/05–2024/12/22 061 (1_19) ch1 HSCA34461319–HSCA34565719 Shadow
Case 48 2024/12/23
2024/12/23
2024/12/25
2024/12/27–2024/12/28
2024/12/27
2024/12/29–2025/01/04
2025/01/04–2025/01/05
070 (0_03)
102 (0_35)
102 (0_35)
102 (0_35)
070 (0_03)
102 (0_35)
102 (0_35)
ch3,4
ch1
ch1
ch1,2
ch3,4
ch1
ch1
HSCA34618803–HSCA34622803
HSCA34617835–HSCA34622835
HSCA34670235–HSCA34674835
HSCA34715635–HSCA34720435
HSCA34717203–HSCA34720003
HSCA34748835–HSCA35001035
HSCA35001235–HSCA35039635
Shadow and light emission
Shadow
Shadow and light emission
Shadow
Light emission
Light emission
Shadow
Case 49 2024/12/24 038 (0_19)
046 (0_15)
054 (0_11)
ch4
ch1,4
ch1
HSCA34645219–HSCA34649219
HSCA34645215–HSCA34649215
HSCA34645211–HSCA34649211
Shadow
Shadow
Shadow
Case 50 2024/12/27 110 (0_51) ch4 HSCA34712651–HSCA34713051 Light emission
Case 51 2024/12/28–2025/01/03 090 (0_47) ch3,4 HSCA34740247–HSCA34945647 Light emission
Case 52 2025/01/02 030 (0_23) ch1 HSCA34862023–HSCA34863623 Shadow and light emission
Case 53 2025/01/02 100 (0_31) ch4 HSCA34866231–HSCA34866431 Light emission
Case 54 2025/01/02–2025/07/17 003 (1_56) ch4 HSCA34853556–HSCA36281756 Shadow
Case 55 2025/01/07 104 (1_48) ch4 HSCA35041348–HSCA35049948 Light emission
Case 56 2025/03/03–2025/03/04
2025/03/03–2025/03/04
029 (1_03)
101 (1_35)
ch4
ch1,2
HSCA35680503–HSCA35712103
HSCA35680535–HSCA35701935
Shadow
Shadow
Case 57 2025/04/24 022 (0_27) ch1 HSCA35873827–HSCA35910027
HSCA35879627–HSCA35909627
Shadow
Light emission
Case 58 2025/04/24 100 (0_31) ch3,4 HSCA35905431–HSCA35909431 Light emission
Case 59 2025/04/24 106 (1_52) ch4 HSCA35908752–HSCA35911952 Light emission
Case 60 2025/05/07


2025/07/17
077 (1_27)
103 (1_31)
095 (0_42)
077 (1_27)
ch1
ch3,4
ch2
ch1,2
HSCA36224127–HSCA36270327
HSCA36225931–HSCA36235731
HSCA36235642
HSCA36273127–HSCA36304127
Shadow
Shadow
Shadow
Shadow
Case 61 2025/05/07– 108 (0_57) ch3,4 HSCA36224057– Shadow
Case 62 2025/05/07 070 (0_03) ch4 HSCA36242403–HSCA36265203 Shadow
Case 63 2025/07/18 099 (0_53) ch4 HSCA36309653–HSCA36313453 Shadow

Case 01

Case # Date (UT) CCD Channel Frame ID Event
Case 01 2017/06/29 104 (1_48) ch4 HSCA11989748–HSCA12003548 Shadow and light emission


★ Object frames (overscan subtracted)


Case 02

Case # Date (UT) CCD Channel Frame ID Event
Case 02 2017/12/24 103 (1_31) ch4 HSCA13469331–HSCA13497931 Shadow


★ Object frame (overscan subtracted)


Case 03

Case # Date (UT) CCD Channel Frame ID Event
Case 03 2018/01/18–02/12 061 (1_19) ch1,2 HSCA13834519–HSCA13985519 Shadow


★ Object frame (overscan subtracted)


Case 04

Case # Date (UT) CCD Channel Frame ID Event
Case 04 2018/11/03 022 (0_27) ch1 HSCA14835027–HSCA14842627 Light emission


★ Object frame (overscan subtracted)


Case 05

Case # Date (UT) CCD Channel Frame ID Event
Case 05 2018/12/08–09
2018/12/11–14
022 (0_27) ch1,2
ch1
HSCA15545227–HSCA15664227
HSCA15757427–HSCA15878027
Shadow
Shadow


★ Object frames (overscan subtracted)


Case 06

Case # Date (UT) CCD Channel Frame ID Event
Case 06 2018/12/30 102 (0_35) ch1 HSCA15906035–HSCA15907235 Shadow


★ Object frame (overscan subtracted)


Case 07

Case # Date (UT) CCD Channel Frame ID Event
Case 07 2019/03/29 070 (0_03) ch1 HSCA17090403–HSCA17111403 Shadow


★ Object frame (overscan subtracted)


Case 08

Case # Date (UT) CCD Channel Frame ID Event
Case 08 2020/03/03–19
2020/03/19
004 (1_42)
004 (1_42)
ch1
ch1
HSCA21249142–HSCA21260142
HSCA21260542–HSCA21263942
Shadow
Light emission


★ Object frames (overscan subtracted)


Case 09

Case # Date (UT) CCD Channel Frame ID Event
Case 09 2020/05/24–25 004 (1_42) ch1 HSCA21599942–HSCA21633342 Shadow


★ Object frame (overscan subtracted)


Case 10

Case # Date (UT) CCD Channel Frame ID Event
Case 10 2020/10/20–2021/01/07
2020/10/20–23
004 (1_42)
100 (0_31)
ch1
ch1,2
HSCA23191000–HSCA24366957
HSCA23191200–HSCA23325357
Shadow
Shadow and light emission


★ Object frames (overscan subtracted)


Case 11

Case # Date (UT) CCD Channel Frame ID Event
Case 11 2020/11/11–13
2020/11/11–13
029 (1_03)
101 (1_35)
ch4
ch1
HSCA23503103–HSCA23573303
HSCA23503135–HSCA23573335
Shadow
Shadow


★ Object frames (overscan subtracted)


Case 12

Case # Date (UT) CCD Channel Frame ID Event
Case 12 2021/01/09–18 062 (0_07) ch3,4 HSCA24489407–HSCA24838207 Light emission


★ Object frame (overscan subtracted)


Case 13

Case # Date (UT) CCD Channel Frame ID Event
Case 13 2021/01/15–18 095 (0_42) ch1,2 HSCA24717642–HSCA24822642 Shadow


★ Object frame (overscan subtracted)


Case 14

Case # Date (UT) CCD Channel Frame ID Event
Case 14 2021/01/18 077 (1_27) ch1 HSCA24808727–HSCA24822727 Shadow


★ Object frame (overscan subtracted)


Case 15

Case # Date (UT) CCD Channel Frame ID Event
Case 15 2021/02/06 053 (1_15) ch2,3 HSCA24863315–HSCA24865115 Shadow


★ Dome flat frame (overscan subtracted)


Case 16

Case # Date (UT) CCD Channel Frame ID Event
Case 16 2021/02/10
2021/02/10–11
104 (1_48)
104 (1_48)
ch1,4
ch4
HSCA25128948–HSCA25154348
HSCA25171548–HSCA25200548
Shadow
Shadow and light emission


★ Object frames (overscan subtracted)


Case 17

Case # Date (UT) CCD Channel Frame ID Event
Case 17 2021/06/09–10 106 (1_52) ch4 HSCA25561552–HSCA25576352 Shadow and light emission


★ Object frames (overscan subtracted)


Case 18

Case # Date (UT) CCD Channel Frame ID Event
Case 18 2021/06/10 090 (0_47) ch2,3 HSCA25570847–HSCA25582447 Light emission


★ Object frame (overscan subtracted)


Case 19

Case # Date (UT) CCD Channel Frame ID Event
Case 19 2021/10/28 104 (1_48) ch1,2 HSCA26812548–HSCA26817348 Shadow and light emission


★ Object frames (overscan subtracted)


Case 20

Case # Date (UT) CCD Channel Frame ID Event
Case 20 2022/05/26–27
2022/05/26–27
000 (1_53)
106 (1_52)
ch4
ch4
HSCA27987953–HSCA28088953
HSCA27987952–HSCA28089952
Shadow
Shadow and light emission


★ Object frames (overscan subtracted)


Case 21

Case # Date (UT) CCD Channel Frame ID Event
Case 21 2022/06/05–07
2022/06/28–07/06
2022/06/28
095 (0_42)
095 (0_42)
103 (1_31)
ch1
ch1,2
ch1
HSCA28430842–HSCA28573442
HSCA28622442–HSCA28883842
HSCA28578331–HSCA28622331
Shadow
Shadow
Shadow


★ Object frames (overscan subtracted)


Case 22

Case # Date (UT) CCD Channel Frame ID Event
Case 22 2022/06/28–07/01 022 (0_27)
100 (0_31)
ch1
ch1,2
HSCA28575827–HSCA28768227
HSCA28575831–HSCA28768231
Shadow
Shadow


★ Object/domeflat frames (overscan subtracted)


Case 23

Case # Date (UT) CCD Channel Frame ID Event
Case 23 2022/06/29–30
2022/06/29–07/04
000 (1_53)
106 (1_52)
ch4
ch4
HSCA28655953–HSCA28731953
HSCA28626552–HSCA28814952
Shadow
Shadow and light emission


★ Object/domeflat frames (overscan subtracted)


Case 24

Case # Date (UT) CCD Channel Frame ID Event
Case 24 2022/10/19 062 (0_07) ch4 HSCA28890007–HSCA28931807 Shadow


★ Object frame (overscan subtracted)


Case 25

Case # Date (UT) CCD Channel Frame ID Event
Case 25 2022/10/30 108 (0_57) ch4 HSCA29275257–HSCA29278457 Shadow


★ Object frame (overscan subtracted)


Case 26

Case # Date (UT) CCD Channel Frame ID Event
Case 26 2023/01/15–2023/01/16
2023/01/15–2023/01/16
2023/01/15
2023/01/16
2023/01/16–2023/01/17
2023/01/20
2023/01/20
2023/01/20
2023/01/20
004 (1_42)
004 (1_42)
100 (0_31)
100 (0_31)
022 (0_27)
038 (0_19)
062 (0_07)
062 (0_07)
070 (0_03)
ch2,3
ch2,3
ch2,3
ch1,2
ch1
ch2,3
ch2,3
ch2
ch1,2,3
HSCA29577542–HSCA29610342
HSCA29593342–HSCA29606342
HSCA29574631–HSCA29577231
HSCA29621431
HSCA29621627–HSCA29671027
HSCA29787819–HSCA29791619
HSCA29787807–HSCA29789407
HSCA29789607–HSCA29879807
HSCA29787803–HSCA29791603
Shadow
Light emission
Shadow
Shadow
Shadow
Shadow
Light emission
Shadow
Light emission


★ Object frames (overscan subtracted)


Case 27

Case # Date (UT) CCD Channel Frame ID Event
Case 27 2023/01/15
2023/01/22
2023/01/25
069 (1_23)
061 (1_19)
061 (1_19)
ch4
ch3
ch1,2,3
HSCA29530723–HSCA29592723
HSCA29878519–HSCA29878919
HSCA30024319–HSCA30024519
Shadow
Shadow
Shadow


★ Object frames (overscan subtracted)


Case 28

Case # Date (UT) CCD Channel Frame ID Event
Case 28 2023/03/19 105 (1_51) ch3,4 HSCA30156351–HSCA30167351 Shadow and light emission


★ Object frame (overscan subtracted)


Case 29

Case # Date (UT) CCD Channel Frame ID Event
Case 29 2023/03/27–2023/05/24
2023/03/27–2023/03/29
2023/05/15–2023/05/16
2023/05/15–2023/05/16
2023/05/23
2023/05/23
2023/05/24–2023/05/25
2023/06/16
022 (0_27)
100 (0_31)
100 (0_31)
100 (0_31)
100 (0_31)
022 (0_27)
100 (0_31)
100 (0_31)
ch1
ch3,4
ch4
ch4
ch3,4
ch1
ch3,4
ch1
HSCA30483027–HSCA30863627
HSCA30483031–HSCA36528831
HSCA30732831–HSCA30750431
HSCA30738431–HSCA30749231
HSCA30815831–HSCA30841631
HSCA30841827–HSCA30850427
HSCA30866431–HSCA30926431
HSCA30977431
Shadow
Shadow
Shadow
Light emission
Shadow
Light emission
Shadow
Shadow


★ Object frames (overscan subtracted)


Case 30

Case # Date (UT) CCD Channel Frame ID Event
Case 30 2023/05/12
2023/05/24
104 (1_48)
104 (1_48)
ch2,3
ch4
HSCA30658948–HSCA30669148
HSCA30916148–HSCA30923748
Light emission
Light emission


★ Object frames (overscan subtracted)


Case 31

Case # Date (UT) CCD Channel Frame ID Event
Case 31 2023/05/24
2023/06/16
077 (1_27)
077 (1_27)
ch1,2
ch1,2
HSCA30866527–HSCA30914727
HSCA30977527–HSCA30977927
Shadow
Shadow


★ Object frame (overscan subtracted)


Case 32

Case # Date (UT) CCD Channel Frame ID Event
Case 32 2023/05/24 105 (1_51) ch3,4 HSCA30914951–HSCA30923751 Shadow and light emission


★ Object frame (overscan subtracted)


### Case 33

Case # Date (UT) CCD Channel Frame ID Event
Case 33 2023/06/16–17 102 (0_35) ch1 HSCA30981235–HSCA31028635 Shadow and light emission


★ Object frame (overscan subtracted)


Case 34

Case # Date (UT) CCD Channel Frame ID Event
Case 34 2023/09/08 095 (0_42)
103 (1_31)
ch1
ch1
HSCA31694242–HSCA31716842
HSCA31694331–HSCA31716931
Shadow
Shadow


★ Object frames (overscan subtracted)


Case 35

Case # Date (UT) CCD Channel Frame ID Event
Case 35 2024/04/03 090 (0_47) ch1,2 HSCA32080447–HSCA32083647 Shadow


★ Object frame (overscan subtracted)


Case 36


★ Object frame (overscan subtracted)


Case 37

Case # Date (UT) CCD Channel Frame ID Event
Case 37 2024/06/13 077 (1_27)
069 (1_23)
ch1
ch2
HSCA32601327–HSCA32618927
HSCA32609923–HSCA32618923
Shadow
Shadow


★ Object frames (overscan subtracted)


Case 38

Case # Date (UT) CCD Channel Frame ID Event
Case 38 2024/06/28 100 (0_31) ch3 HSCA32681431–HSCA32683231 Shadow


★ Object frame (overscan subtracted)


Case 39

Case # Date (UT) CCD Channel Frame ID Event
Case 39 2024/06/28 104 (1_48) ch4 HSCA32683548–HSCA32686748 Light emission


★ Object frame (overscan subtracted)


Case 40

Case # Date (UT) CCD Channel Frame ID Event
Case 40 2024/07/04
2024/08/06
004 (1_42)
004 (1_42)
ch1,2,3
ch1
HSCA32917542–HSCA32952542
HSCA33409542–HSCA33414542
Shadow
Shadow


★ Object frames (overscan subtracted)


Case 41

Case # Date (UT) CCD Channel Frame ID Event
Case 41 2024/07/08 037 (1_07) ch3 HSCA33034907–HSCA33044107 Shadow


★ Object frame (overscan subtracted)


Case 42

Case # Date (UT) CCD Channel Frame ID Event
Case 42 2024/08/05 104 (1_48) ch1,4 HSCA33383748–HSCA33389148 Light emission


★ Object frame (overscan subtracted)


Case 43

Case # Date (UT) CCD Channel Frame ID Event
Case 43 2024/10/03
2024/10/03
100 (0_31)
100 (0_31)
ch1,2,3
ch2,3
HSCA33890631–HSCA33890831
HSCA33891031–HSCA33892831
Light emission
Shadow


★ Dark/domeflat frames (overscan subtracted)


Case 44

Case # Date (UT) CCD Channel Frame ID Event
Case 44 2024/10/06 069 (1_23) ch2,3,4 HSCA33989523–HSCA33999123 Shadow


★ Object frame (overscan subtracted)


Case 45

Case # Date (UT) CCD Channel Frame ID Event
Case 45 2024/11/28–2024/11/29 102 (0_35) ch1 HSCA34172235–HSCA34225435 Light emission


★ Object frame (overscan subtracted)


Case 46

Case # Date (UT) CCD Channel Frame ID Event
Case 46 2024/12/03 022 (0_27)
100 (0_31)
ch1
ch4
HSCA34375627–HSCA34389627
HSCA34375631–HSCA34389631
Shadow
Shadow


★ Object/domeflat frames (overscan subtracted)


Case 47

Case # Date (UT) CCD Channel Frame ID Event
Case 47 2024/12/05–2024/12/22 061 (1_19) ch1 HSCA34461319–HSCA34565719 Shadow


★ Object frame (overscan subtracted)


Case 48

Case # Date (UT) CCD Channel Frame ID Event
Case 48 2024/12/23
2024/12/23
2024/12/25
2024/12/27–2024/12/28
2024/12/27
2024/12/29–2025/01/04
2025/01/04–2025/01/05
070 (0_03)
102 (0_35)
102 (0_35)
102 (0_35)
070 (0_03)
102 (0_35)
102 (0_35)
ch3,4
ch1
ch1
ch1,2
ch3,4
ch1
ch1
HSCA34618803–HSCA34622803
HSCA34617835–HSCA34622835
HSCA34670235–HSCA34674835
HSCA34715635–HSCA34720435
HSCA34717203–HSCA34720003
HSCA34748835–HSCA35001035
HSCA35001235–HSCA35039635
Shadow and light emission
Shadow
Shadow and light emission
Shadow
Light emission
Light emission
Shadow


★ Object frames (overscan subtracted)


Case 49

Case # Date (UT) CCD Channel Frame ID Event
Case 49 2024/12/24 038 (0_19)
046 (0_15)
054 (0_11)
ch4
ch1,4
ch1
HSCA34645219–HSCA34649219
HSCA34645215–HSCA34649215
HSCA34645211–HSCA34649211
Shadow
Shadow
Shadow


★ Object frame (overscan subtracted)


Case 50

Case # Date (UT) CCD Channel Frame ID Event
Case 50 2024/12/27 110 (0_51) ch4 HSCA34712651–HSCA34713051 Light emission


★ Object frame (overscan subtracted)


Case 51

Case # Date (UT) CCD Channel Frame ID Event
Case 51 2024/12/28–2025/01/03 090 (0_47) ch3,4 HSCA34740247–HSCA34945647 Light emission


★ Object frame (overscan subtracted)


Case 52

Case # Date (UT) CCD Channel Frame ID Event
Case 52 2025/01/02 030 (0_23) ch1 HSCA34862023–HSCA34863623 Shadow and light emission


★ Object frame (overscan subtracted)


Case 53

Case # Date (UT) CCD Channel Frame ID Event
Case 53 2025/01/02 100 (0_31) ch4 HSCA34866231–HSCA34866431 Light emission


★ Object frame (overscan subtracted)


Case 54

Case # Date (UT) CCD Channel Frame ID Event
Case 54 2025/01/02–2025/07/17 003 (1_56) ch4 HSCA34853556–HSCA36281756 Shadow


★ Object frames (overscan subtracted)


Case 55

Case # Date (UT) CCD Channel Frame ID Event
Case 55 2025/01/07 104 (1_48) ch4 HSCA35041348–HSCA35049948 Light emission


★ Object frame (overscan subtracted)


Case 56

Case # Date (UT) CCD Channel Frame ID Event
Case 56 2025/03/03–2025/03/04
2025/03/03–2025/03/04
029 (1_03)
101 (1_35)
ch4
ch1,2
HSCA35680503–HSCA35712103
HSCA35680535–HSCA35701935
Shadow
Shadow


★ Object frame (overscan subtracted)


Case 57

Case # Date (UT) CCD Channel Frame ID Event
Case 57 2025/04/24 022 (0_27) ch1 HSCA35873827–HSCA35910027
HSCA35879627–HSCA35909627
Shadow
Light emission


★ Object frame (overscan subtracted)


Case 58

Case # Date (UT) CCD Channel Frame ID Event
Case 58 2025/04/24 100 (0_31) ch3,4 HSCA35905431–HSCA35909431 Light emission


★ Object frame (overscan subtracted)


Case 59

Case # Date (UT) CCD Channel Frame ID Event
Case 59 2025/04/24 106 (1_52) ch4 HSCA35908752–HSCA35911952 Light emission


★ Object frame (overscan subtracted)


Case 60

Case # Date (UT) CCD Channel Frame ID Event
Case 60 2025/05/07


2025/07/17
077 (1_27)
103 (1_31)
095 (0_42)
077 (1_27)
ch1
ch3,4
ch2
ch1,2
HSCA36224127–HSCA36270327
HSCA36225931–HSCA36235731
HSCA36235642
HSCA36273127–HSCA36304127
Shadow
Shadow
Shadow
Shadow


★ Object frames (overscan subtracted)


Case 61

Case # Date (UT) CCD Channel Frame ID Event
Case 61 2025/05/07– 108 (0_57) ch3,4 HSCA36224057– Shadow


★ Object frame (overscan subtracted)


Case 62

Case # Date (UT) CCD Channel Frame ID Event
Case 62 2025/05/07 070 (0_03) ch4 HSCA36242403–HSCA36265203 Shadow


★ Object frame (overscan subtracted)


Case 63

Case # Date (UT) CCD Channel Frame ID Event
Case 63 2025/07/18 099 (0_53) ch4 HSCA36309653–HSCA36313453 Shadow


★ Object frame (overscan subtracted)




Last update: July 22, 2025