ASTROSAT CZTI

Data Quality Report

Orbit 56628

Creation date: 2026-03-17T10:42:05.569175
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_083T06_9000006558_56628cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56628cztM0_level2_quad_clean.evt
Size (bytes)519,410,880126,763,200
Size495.3 MB 120.9 MB
Events in quadrant A4,889,158824,193
Events in quadrant B4,927,515882,055
Events in quadrant C4,252,757783,314
Events in quadrant D4,468,242732,696

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210680
B0210850
C0192990
D0197850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88701571.770011%
B88713073.460715%
C8871520.586180%
D8871690.777815%

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 8870 8870 82 82 0.92% 0.92%
B 8871 8871 112 112 1.26% 1.26%
C 8871 8871 23 23 0.26% 0.26%
D 8871 8871 56 56 0.63% 0.63%

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 432800 1848.52 958 937 233.6
A 7 64 302081 1289.0 958 937 233.6
A 4 95 142732 606.93 958 937 233.6
B 8 128 439997 2119.02 955 916 207.2
B 0 231 201741 969.19 955 916 207.2
B 10 247 147627 708.03 955 916 207.2
C 13 3 187678 734.47 939 930 254.3
C 1 16 153634 600.58 939 930 254.3
C 12 252 98447 383.53 939 930 254.3
D 7 96 146032 558.17 930 888 260.0
D 5 113 122141 466.3 930 888 260.0
D 3 12 112509 429.26 930 888 260.0

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