ASTROSAT CZTI

Data Quality Report

Orbit 56301

Creation date: 2026-02-23T11:38:39.335707
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_049T01_9000006552_56301cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56301cztM0_level2_quad_clean.evt
Size (bytes)740,157,12080,366,400
Size705.9 MB 76.6 MB
Events in quadrant A12,639,390281,663
Events in quadrant B5,321,022599,713
Events in quadrant C5,111,227549,969
Events in quadrant D3,823,810549,813

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420689
B0203421
C0198321
D0159961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6479379058.496682%
B647989413.798426%
C648068910.632716%
D64801452.237654%

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 7504 6480 3728 3728 49.68% 57.53%
B 7503 6479 673 673 8.97% 10.39%
C 7505 6481 548 548 7.30% 8.46%
D 7505 6481 123 123 1.64% 1.90%

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 15 32 7555827 62675.16 481 470 120.5
A 7 64 2225154 18454.78 481 470 120.5
A 4 249 357679 2963.21 481 470 120.5
B 5 172 1945993 13753.19 654 629 141.4
B 5 185 404915 2858.19 654 629 141.4
B 0 231 82296 577.36 654 629 141.4
C 5 250 1654475 9290.17 645 640 178.0
C 12 252 390847 2191.93 645 640 178.0
C 5 233 274312 1537.31 645 640 178.0
D 2 249 496083 2631.34 663 631 188.3
D 2 31 347370 1841.53 663 631 188.3
D 2 120 68051 358.07 663 631 188.3

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