ASTROSAT CZTI

Data Quality Report

Orbit 57994

Creation date: 2026-06-17T08:13:15.393755
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_031T01_9000006584_57994cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57994cztM0_level2_quad_clean.evt
Size (bytes)849,162,240101,082,240
Size809.8 MB 96.4 MB
Events in quadrant A5,489,707685,475
Events in quadrant B7,691,366654,447
Events in quadrant C12,611,508488,745
Events in quadrant D4,997,900655,337

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224361
B0286711
C0432601
D0207071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01660
B01660
C01660
D01660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82986597.941673%
B8298158119.052784%
C8298293535.369969%
D82991141.373659%

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 8540 8481 372 372 4.36% 4.39%
B 8540 8480 1088 1088 12.74% 12.83%
C 8540 8443 2731 2731 31.98% 32.35%
D 8541 8482 109 109 1.28% 1.29%

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 10 251 1877619 8402.71 903 881 223.3
A 2 143 35008 152.8 903 881 223.3
A 4 236 32612 142.07 903 881 223.3
B 10 128 3734705 19928.51 861 826 187.4
B 4 236 158069 839.24 861 826 187.4
B 5 185 87198 460.99 861 826 187.4
C 15 201 6463879 30175.8 776 767 214.2
C 15 224 2786444 13006.12 776 767 214.2
C 15 244 92999 430.62 776 767 214.2
D 12 110 609744 2385.62 897 857 255.2
D 3 224 430826 1684.62 897 857 255.2
D 2 249 141630 551.55 897 857 255.2

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