ASTROSAT CZTI

Data Quality Report

Orbit 45198

Creation date: 2024-06-27T23:10:29.880044
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/AS1A13_049T06_9000006054_45198cztM0_level2.fits modeM0/AS1A13_049T06_9000006054_45198cztM0_level2_quad_clean.evt
Size (bytes)483,796,800113,627,520
Size461.4 MB 108.4 MB
Events in quadrant A5,420,224760,560
Events in quadrant B3,530,700803,057
Events in quadrant C3,375,657775,528
Events in quadrant D5,085,540655,263

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206992
B0147002
C0142322
D0194632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63991372.140960%
B6399651.015784%
C6399430.671980%
D63995358.360681%

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 7629 6400 22 22 0.29% 0.34%
B 7629 6400 17 17 0.22% 0.27%
C 7629 6400 23 23 0.30% 0.36%
D 7629 6400 457 457 5.99% 7.14%

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 83 2473830 16011.78 750 734 154.5
A 12 227 24998 157.09 750 734 154.5
A 13 248 17410 107.96 750 734 154.5
B 4 170 242696 1645.34 758 734 147.1
B 3 112 188619 1277.62 758 734 147.1
B 0 183 53376 357.97 758 734 147.1
C 12 2 263053 1483.87 762 768 176.8
C 3 233 106872 600.28 762 768 176.8
C 1 3 28154 154.94 762 768 176.8
D 13 112 567510 3141.2 722 702 180.4
D 4 221 414960 2295.78 722 702 180.4
D 13 249 303749 1679.46 722 702 180.4

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