ASTROSAT CZTI

Data Quality Report

Orbit 56104

Creation date: 2026-02-10T04:41:02.125466
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_56104cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56104cztM0_level2_quad_clean.evt
Size (bytes)585,008,640107,190,720
Size557.9 MB 102.2 MB
Events in quadrant A5,680,015677,848
Events in quadrant B4,078,375775,887
Events in quadrant C6,526,249619,416
Events in quadrant D4,763,927628,902

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0223721
B0176261
C0249321
D0199451

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78155787.396033%
B78151051.343570%
C781589111.401152%
D78152663.403711%

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 7840 7816 464 464 5.92% 5.94%
B 7840 7816 57 57 0.73% 0.73%
C 7840 7816 736 736 9.39% 9.42%
D 7840 7816 218 218 2.78% 2.79%

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 914959 4645.75 792 773 196.8
A 7 64 582707 2957.29 792 773 196.8
A 15 32 503005 2552.26 792 773 196.8
B 5 185 184382 1057.18 814 787 173.7
B 9 254 158444 907.82 814 787 173.7
B 0 171 100407 573.63 814 787 173.7
C 12 254 2415529 11910.39 746 736 202.7
C 12 252 285053 1402.32 746 736 202.7
C 15 230 253250 1245.46 746 736 202.7
D 2 120 781358 3529.81 772 737 221.2
D 11 129 315712 1424.25 772 737 221.2
D 2 249 207939 936.93 772 737 221.2

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