ASTROSAT CZTI

Data Quality Report

Orbit 50937

Creation date: 2025-02-27T12:13:14.611897
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/AS1C07_001T01_9000006450_50937cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50937cztM0_level2_quad_clean.evt
Size (bytes)2,475,717,120220,942,080
Size2.3 GB 210.7 MB
Events in quadrant A27,404,8161,184,322
Events in quadrant B9,953,2981,935,383
Events in quadrant C30,872,737908,288
Events in quadrant D21,887,3501,297,241

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04000
B04000
C04000
D04000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0950972
B0443192
C01053372
D0790572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19784680834.411646%
B197844072.057218%
C19785948047.915087%
D19785364018.397776%

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 20744 19786 6466 6466 31.17% 32.68%
B 20744 19786 156 156 0.75% 0.79%
C 20745 19787 7192 7192 34.67% 36.35%
D 20745 19787 3635 3635 17.52% 18.37%

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 8 43 13699215 31693.96 1728 1683 432.2
A 7 206 2283463 5279.68 1728 1683 432.2
A 14 254 1728706 3996.06 1728 1683 432.2
B 4 171 420509 951.94 2074 1998 439.6
B 0 171 234418 528.66 2074 1998 439.6
B 7 252 180448 405.9 2074 1998 439.6
C 4 210 14951662 36108.13 1484 1468 414.0
C 5 10 3754445 9064.3 1484 1468 414.0
C 12 247 2142551 5171.2 1484 1468 414.0
D 15 184 5026273 9710.33 1842 1782 517.4
D 8 176 3856713 7450.04 1842 1782 517.4
D 7 126 909168 1753.61 1842 1782 517.4

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