ASTROSAT CZTI

Data Quality Report

Orbit 57450

Creation date: 2026-05-11T17:08:44.701348
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_113T09_9000006574_57450cztM0_level2.fits modeM0/AS1A14_113T09_9000006574_57450cztM0_level2_quad_clean.evt
Size (bytes)414,270,72087,252,480
Size395.1 MB 83.2 MB
Events in quadrant A2,715,926584,290
Events in quadrant B4,027,284590,583
Events in quadrant C3,866,541545,352
Events in quadrant D4,265,603509,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123531
B0160241
C0154671
D0168141

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5906601.015916%
B59074948.362959%
C59072313.910615%
D59073305.586592%

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 6997 5908 2 2 0.03% 0.03%
B 6998 5909 254 254 3.63% 4.30%
C 6998 5909 139 139 1.99% 2.35%
D 6998 5908 260 260 3.72% 4.40%

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 3 14 164179 1016.55 653 637 160.9
A 10 251 11369 66.71 653 637 160.9
A 3 137 7871 44.97 653 637 160.9
B 4 206 1330508 9906.77 621 598 134.2
B 10 247 105786 783.57 621 598 134.2
B 7 252 49446 363.88 621 598 134.2
C 15 224 1058575 6267.21 619 611 168.8
C 1 16 155074 915.01 619 611 168.8
C 13 3 69126 405.87 619 611 168.8
D 15 142 860746 4932.0 617 588 174.4
D 7 96 357306 2045.36 617 588 174.4
D 8 240 199228 1138.96 617 588 174.4

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