ASTROSAT CZTI

Data Quality Report

Orbit 57849

Creation date: 2026-06-07T14:07:04.667802
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_125T11_9000006582_57849cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57849cztM0_level2_quad_clean.evt
Size (bytes)526,973,760106,718,400
Size502.6 MB 101.8 MB
Events in quadrant A3,505,261708,801
Events in quadrant B3,459,353760,625
Events in quadrant C8,255,622603,149
Events in quadrant D3,699,350632,293

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163500
B0159370
C0298602
D0164130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A756360.079334%
B7564570.753570%
C7563101513.420600%
D7563350.462779%

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 7563 7563 0 0 0.00% 0.00%
B 7564 7564 27 27 0.36% 0.36%
C 7563 7563 773 773 10.22% 10.22%
D 7563 7563 38 38 0.50% 0.50%

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 7 64 341123 1733.86 794 774 196.3
A 3 14 65222 328.32 794 774 196.3
A 3 128 10569 49.9 794 774 196.3
B 7 252 112832 663.27 787 755 169.0
B 0 153 48587 283.07 787 755 169.0
B 5 185 48086 280.1 787 755 169.0
C 9 38 3577304 17687.36 746 738 202.2
C 15 224 1480880 7319.82 746 738 202.2
C 12 2 100054 491.15 746 738 202.2
D 3 224 131748 606.52 770 734 216.0
D 12 110 122447 563.46 770 734 216.0
D 3 12 121373 558.49 770 734 216.0

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