ASTROSAT CZTI

Data Quality Report

Orbit 56450

Creation date: 2026-03-05T14:00:55.449870
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_083T05_9000006554_56450cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56450cztM0_level2_quad_clean.evt
Size (bytes)805,069,44072,204,480
Size767.8 MB 68.9 MB
Events in quadrant A7,621,061437,174
Events in quadrant B8,379,893429,473
Events in quadrant C3,288,243545,853
Events in quadrant D10,044,409351,473

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0268052
B0290301
C0142151
D0340591

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6041172728.587982%
B6042223937.057266%
C60421983.277061%
D6042221236.610394%

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 7150 6040 1732 1732 24.22% 28.68%
B 7152 6042 1922 1922 26.87% 31.81%
C 7152 6043 142 142 1.99% 2.35%
D 7152 6042 2400 2400 33.56% 39.72%

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 3 4166387 29659.93 570 555 140.5
A 12 194 540985 3847.76 570 555 140.5
A 7 64 283106 2011.71 570 555 140.5
B 5 172 4795636 40259.49 557 537 119.1
B 4 206 1241913 10422.55 557 537 119.1
B 0 63 31268 258.02 557 537 119.1
C 6 223 360197 2087.88 632 625 172.2
C 12 254 247572 1433.92 632 625 172.2
C 12 252 97774 564.1 632 625 172.2
D 8 129 3326072 21316.48 547 521 156.0
D 5 113 3193577 20467.2 547 521 156.0
D 12 4 450729 2885.79 547 521 156.0

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