ASTROSAT CZTI

Data Quality Report

Orbit 56570

Creation date: 2026-03-13T13:00:52.575741
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_083T06_9000006558_56570cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56570cztM0_level2_quad_clean.evt
Size (bytes)620,697,600121,320,000
Size591.9 MB 115.7 MB
Events in quadrant A7,197,608732,787
Events in quadrant B4,391,891877,163
Events in quadrant C4,001,327768,114
Events in quadrant D6,715,313695,632

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0274820
B0192580
C0183970
D0260240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A863792010.651847%
B8638981.134522%
C8638460.532531%
D86384144.792776%

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 8637 8637 713 713 8.26% 8.26%
B 8638 8638 37 37 0.43% 0.43%
C 8638 8638 37 37 0.43% 0.43%
D 8638 8638 444 444 5.14% 5.14%

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 4 249 2221632 10068.06 894 872 220.6
A 15 33 476024 2154.15 894 872 220.6
A 0 8 315575 1426.74 894 872 220.6
B 4 206 329653 1658.48 934 898 198.2
B 4 21 77592 386.9 934 898 198.2
B 4 171 68349 340.27 934 898 198.2
C 12 252 160224 646.2 915 905 246.5
C 13 3 101450 407.81 915 905 246.5
C 12 249 44229 175.72 915 905 246.5
D 3 12 1153168 4620.88 889 850 249.4
D 8 129 813169 3257.46 889 850 249.4
D 6 239 721340 2889.22 889 850 249.4

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