ASTROSAT CZTI

Data Quality Report

Orbit 54674

Creation date: 2025-11-05T22:13:25.784222
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_066T07_9000006522_54674cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54674cztM0_level2_quad_clean.evt
Size (bytes)619,418,88091,598,400
Size590.7 MB 87.4 MB
Events in quadrant A3,889,381632,782
Events in quadrant B3,561,890678,052
Events in quadrant C5,018,421602,657
Events in quadrant D9,949,160401,767

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161181
B0151791
C0194451
D0341391

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65752984.532319%
B65752583.923954%
C65752543.863118%
D6576239736.450730%

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 7660 6575 167 167 2.18% 2.54%
B 7660 6575 145 145 1.89% 2.21%
C 7660 6575 212 212 2.77% 3.22%
D 7661 6576 2058 2058 26.86% 31.30%

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 11 3 487806 2724.46 729 710 178.8
A 7 14 318569 1777.87 729 710 178.8
A 0 8 59854 330.81 729 710 178.8
B 2 249 453783 2976.5 714 686 152.2
B 10 247 87065 567.44 714 686 152.2
B 5 172 65826 427.92 714 686 152.2
C 9 38 1869597 9515.13 712 706 196.4
C 4 5 135530 686.43 712 706 196.4
C 14 254 80415 405.82 712 706 196.4
D 11 129 6052007 35606.26 605 578 170.0
D 2 62 1244353 7318.3 605 578 170.0
D 8 240 47695 277.23 605 578 170.0

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