ASTROSAT CZTI

Data Quality Report

Orbit 56433

Creation date: 2026-03-04T06:57:12.109141
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_56433cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56433cztM0_level2_quad_clean.evt
Size (bytes)502,444,80094,291,200
Size479.2 MB 89.9 MB
Events in quadrant A5,758,916589,773
Events in quadrant B4,648,152655,420
Events in quadrant C3,680,890606,967
Events in quadrant D4,006,062549,579

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0216432
B0181962
C0155762
D0166182

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A649869810.741767%
B64985268.094798%
C64981442.216066%
D64982794.293629%

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 7658 6498 713 713 9.31% 10.97%
B 7658 6498 312 312 4.07% 4.80%
C 7658 6499 104 104 1.36% 1.60%
D 7658 6499 245 245 3.20% 3.77%

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 1314737 7711.47 683 666 170.4
A 4 95 874210 5126.29 683 666 170.4
A 8 249 290058 1698.26 683 666 170.4
B 4 206 1466993 10118.67 684 660 144.9
B 5 185 230605 1586.77 684 660 144.9
B 0 171 42578 289.26 684 660 144.9
C 12 254 604701 3207.51 685 680 188.3
C 1 16 140368 741.78 685 680 188.3
C 12 252 98401 518.92 685 680 188.3
D 3 12 342609 1822.42 667 639 187.6
D 8 160 295520 1571.48 667 639 187.6
D 2 249 160463 851.73 667 639 187.6

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