ASTROSAT CZTI

Data Quality Report

Orbit 56057

Creation date: 2026-02-07T00:50:12.512788
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_083T03_9000006548_56057cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56057cztM0_level2_quad_clean.evt
Size (bytes)498,075,84093,683,520
Size475.0 MB 89.3 MB
Events in quadrant A5,920,355588,064
Events in quadrant B3,517,323680,329
Events in quadrant C3,170,117604,816
Events in quadrant D5,322,055508,454

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222052
B0150952
C0143492
D0203572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65296399.787104%
B65291412.159596%
C6529370.566702%
D652971510.951141%

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 7659 6530 655 655 8.55% 10.03%
B 7659 6530 58 58 0.76% 0.89%
C 7659 6530 34 34 0.44% 0.52%
D 7659 6530 704 704 9.19% 10.78%

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 12 115 2454181 14592.39 677 660 168.1
A 15 32 250014 1483.04 677 660 168.1
A 0 8 240384 1425.77 677 660 168.1
B 5 185 216286 1465.89 690 666 147.1
B 2 249 127748 863.97 690 666 147.1
B 10 247 90918 613.58 690 666 147.1
C 13 3 333686 1802.98 670 664 184.7
C 15 147 82200 441.44 670 664 184.7
C 12 252 75439 404.83 670 664 184.7
D 2 16 1087585 6033.93 633 604 180.1
D 2 249 939330 5210.95 633 604 180.1
D 11 129 491166 2723.16 633 604 180.1

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