ASTROSAT CZTI

Data Quality Report

Orbit 46734

Creation date: 2024-06-27T23:26:59.320586
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_205T01_9000006260_46734cztM0_level2.fits modeM0/AS1T05_205T01_9000006260_46734cztM0_level2_quad_clean.evt
Size (bytes)396,037,44072,616,320
Size377.7 MB 69.3 MB
Events in quadrant A4,962,375471,593
Events in quadrant B3,141,998509,186
Events in quadrant C2,343,132493,345
Events in quadrant D3,860,636406,206

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174141
B0123731
C0102781
D0145951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A45253878.552486%
B45252014.441989%
C45251142.519337%
D452562013.701657%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 5695 4526 251 251 4.41% 5.55%
B 5695 4525 121 121 2.12% 2.67%
C 5695 4526 68 68 1.19% 1.50%
D 5695 4526 544 544 9.55% 12.02%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 2251441 21529.03 495 485 104.6
A 15 235 502379 4800.31 495 485 104.6
A 13 248 200033 1908.56 495 485 104.6
B 3 112 683682 6847.82 498 483 99.8
B 12 16 318103 3183.56 498 483 99.8
B 0 190 45334 449.55 498 483 99.8
C 12 2 309650 2620.34 496 498 118.0
C 3 233 58956 495.48 496 498 118.0
C 14 254 17956 147.97 496 498 118.0
D 1 52 1896624 16226.59 458 444 116.9
D 13 249 83788 713.22 458 444 116.9
D 15 217 52777 447.84 458 444 116.9

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter