ASTROSAT CZTI

Data Quality Report

Orbit 56422

Creation date: 2026-03-03T13:47:36.977666
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_56422cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56422cztM0_level2_quad_clean.evt
Size (bytes)925,326,72072,889,920
Size882.5 MB 69.5 MB
Events in quadrant A11,476,611336,309
Events in quadrant B6,233,796532,233
Events in quadrant C5,255,358511,696
Events in quadrant D10,757,042348,559

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387381
B0232791
C0203621
D0366783

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6852308745.052539%
B6852129418.884997%
C68536008.755290%
D6852266638.908348%

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 7898 6943 2682 2682 33.96% 38.63%
B 7899 7134 687 687 8.70% 9.63%
C 7900 7129 442 442 5.59% 6.20%
D 7899 7134 2546 2546 32.23% 35.69%

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 5097918 34429.38 596 580 148.1
A 4 95 2123010 14335.71 596 580 148.1
A 3 62 875996 5912.9 596 580 148.1
B 4 206 3049864 20560.81 689 664 148.3
B 10 247 165561 1111.9 689 664 148.3
B 0 63 66011 440.64 689 664 148.3
C 12 254 1000180 5124.41 715 709 195.0
C 15 147 990509 5074.83 715 709 195.0
C 15 230 160647 820.02 715 709 195.0
D 8 129 5642840 33646.99 594 567 167.7
D 5 113 913741 5445.6 594 567 167.7
D 3 12 546024 3252.76 594 567 167.7

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