ASTROSAT CZTI

Data Quality Report

Orbit 56733

Creation date: 2026-03-24T16:20:08.788066
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/AS1A14_083T05_9000006560_56733cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56733cztM0_level2_quad_clean.evt
Size (bytes)656,861,760136,247,040
Size626.4 MB 129.9 MB
Events in quadrant A6,444,261884,652
Events in quadrant B4,892,248973,033
Events in quadrant C7,328,705787,332
Events in quadrant D4,893,263804,207

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01960
B01960
C01960
D01960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257000
B0218790
C0287643
D0218300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97464184.288939%
B97472542.605930%
C9745105410.815803%
D97471571.610752%

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 9746 9746 308 308 3.16% 3.16%
B 9747 9747 50 50 0.51% 0.51%
C 9747 9746 691 691 7.09% 7.09%
D 9747 9747 106 106 1.09% 1.09%

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 3 14 933279 3585.17 1051 1023 260.0
A 3 62 702293 2696.87 1051 1023 260.0
A 10 251 575565 2209.51 1051 1023 260.0
B 4 206 345861 1490.51 1062 1020 231.4
B 8 128 164060 704.71 1062 1020 231.4
B 10 247 73915 315.07 1062 1020 231.4
C 15 230 1837559 6856.25 985 978 267.9
C 13 3 1135432 4235.1 985 978 267.9
C 12 252 133778 495.76 985 978 267.9
D 2 249 265268 919.81 1030 984 287.3
D 2 207 177355 613.84 1030 984 287.3
D 2 252 114955 396.66 1030 984 287.3

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