ASTROSAT CZTI

Data Quality Report

Orbit 57101

Creation date: 2026-04-18T05:21:14.571170
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_083T10_9000006566_57101cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57101cztM0_level2_quad_clean.evt
Size (bytes)480,441,60093,513,600
Size458.2 MB 89.2 MB
Events in quadrant A3,279,278627,424
Events in quadrant B3,971,796653,773
Events in quadrant C3,241,289599,803
Events in quadrant D6,796,612505,324

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142802
B0160912
C0142632
D0245952

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63771221.913125%
B63773335.221891%
C6377741.160420%
D637679912.531368%

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 7487 6378 49 49 0.65% 0.77%
B 7487 6378 152 152 2.03% 2.38%
C 7487 6378 52 52 0.69% 0.82%
D 7486 6377 889 889 11.88% 13.94%

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 203671 1181.03 697 680 171.9
A 3 14 183934 1066.2 697 680 171.9
A 4 13 57810 332.39 697 680 171.9
B 10 16 821739 5750.94 673 650 142.8
B 4 171 114605 798.15 673 650 142.8
B 0 197 105303 732.99 673 650 142.8
C 6 223 228655 1235.53 679 672 184.5
C 14 254 89885 483.48 679 672 184.5
C 1 16 79776 428.69 679 672 184.5
D 15 142 2533034 13739.29 643 612 184.3
D 12 33 740616 4014.78 643 612 184.3
D 8 240 359761 1948.51 643 612 184.3

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