ASTROSAT CZTI

Data Quality Report

Orbit 56490

Creation date: 2026-03-08T05:37:34.025177
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_060T01_9000006556_56490cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56490cztM0_level2_quad_clean.evt
Size (bytes)405,469,44090,630,720
Size386.7 MB 86.4 MB
Events in quadrant A3,965,648590,341
Events in quadrant B3,007,351645,641
Events in quadrant C3,959,441543,266
Events in quadrant D3,592,783530,832

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163001
B0133961
C0164361
D0150121

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62231252.008677%
B6222500.803600%
C62223926.300225%
D62231041.671220%

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 7318 6224 80 80 1.09% 1.29%
B 7317 6223 24 24 0.33% 0.39%
C 7317 6223 385 385 5.26% 6.19%
D 7318 6224 91 91 1.24% 1.46%

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 4 95 781223 4679.04 662 643 166.8
A 0 8 337501 2019.23 662 643 166.8
A 12 3 95453 568.32 662 643 166.8
B 0 63 115599 814.27 664 643 141.2
B 10 247 77262 542.72 664 643 141.2
B 4 171 67147 471.07 664 643 141.2
C 15 230 1077130 6267.04 621 616 171.8
C 13 3 263280 1529.13 621 616 171.8
C 6 223 98624 570.56 621 616 171.8
D 3 12 427805 2338.89 635 606 182.6
D 2 249 148058 807.29 635 606 182.6
D 11 176 120454 656.16 635 606 182.6

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