ASTROSAT CZTI

Data Quality Report

Orbit 54651

Creation date: 2025-11-04T09:55:50.214650
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_066T07_9000006522_54651cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54651cztM0_level2_quad_clean.evt
Size (bytes)610,689,600120,957,120
Size582.4 MB 115.4 MB
Events in quadrant A4,565,846804,757
Events in quadrant B5,950,525809,653
Events in quadrant C5,508,588743,495
Events in quadrant D5,920,943714,317

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0199201
B0238661
C0226241
D0235341

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85022162.540579%
B85027739.091978%
C85034475.256968%
D85033103.645772%

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 8927 8503 147 147 1.65% 1.73%
B 8927 8503 500 500 5.60% 5.88%
C 8928 8504 359 359 4.02% 4.22%
D 8928 8504 215 215 2.41% 2.53%

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 11 3 569168 2441.81 938 912 232.7
A 0 8 189525 810.47 938 912 232.7
A 3 110 98859 420.88 938 912 232.7
B 2 249 1847326 9322.85 910 877 198.1
B 10 247 283949 1429.25 910 877 198.1
B 7 0 89661 448.28 910 877 198.1
C 9 38 510457 2033.8 905 896 250.5
C 6 223 509376 2029.48 905 896 250.5
C 13 3 403920 1608.58 905 896 250.5
D 2 62 1262786 4912.79 898 856 256.9
D 2 172 412202 1601.4 898 856 256.9
D 6 239 354203 1375.61 898 856 256.9

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