ASTROSAT CZTI

Data Quality Report

Orbit 57675

Creation date: 2026-05-26T21:07:35.079430
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_125T09_9000006578_57675cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57675cztM0_level2_quad_clean.evt
Size (bytes)448,214,400111,522,240
Size427.5 MB 106.4 MB
Events in quadrant A3,253,154727,745
Events in quadrant B3,715,333781,730
Events in quadrant C5,026,510681,036
Events in quadrant D4,003,348655,358

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154240
B0164301
C0203980
D0172230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A762890.117986%
B7628550.721028%
C76292513.290077%
D7629700.917551%

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 7628 7628 3 3 0.04% 0.04%
B 7629 7629 36 36 0.47% 0.47%
C 7629 7629 232 232 3.04% 3.04%
D 7629 7629 62 62 0.81% 0.81%

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 26091 123.78 828 806 204.3
A 4 3 11366 51.7 828 806 204.3
A 4 13 10970 49.76 828 806 204.3
B 5 185 241305 1390.46 813 783 173.0
B 10 247 83034 475.49 813 783 173.0
B 0 213 69322 396.22 813 783 173.0
C 15 224 847099 3932.34 792 785 215.2
C 12 254 405363 1879.84 792 785 215.2
C 12 252 288909 1338.75 792 785 215.2
D 8 240 218832 957.96 803 769 227.6
D 5 38 146126 638.56 803 769 227.6
D 2 120 118124 515.54 803 769 227.6

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