ASTROSAT CZTI

Data Quality Report

Orbit 01129

Creation date: 2024-06-27T14:07:57.492278
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/AS1P01_997T01_9000000214_01129cztM0_level2.evt modeM0/AS1P01_997T01_9000000214_01129cztM0_level2_quad_clean.evt
Size (bytes)873,115,20088,657,920
Size832.7 MB 84.6 MB
Events in quadrant A6,604,501589,701
Events in quadrant B6,830,516589,040
Events in quadrant C6,498,732559,479
Events in quadrant D6,136,253555,026

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0236192
B0242631
C0233111
D0222121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A560760.107009%
B560770.124844%
C560710.017835%
D5607150.267523%

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 6842 5608 143 143 2.09% 2.55%
B 6842 5608 159 159 2.32% 2.84%
C 6842 5608 123 123 1.80% 2.19%
D 6842 5608 132 132 1.93% 2.35%

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 11 79 6744 12.21 1719 1730 410.6
A 3 111 5566 9.34 1719 1730 410.6
A 12 243 5477 9.13 1719 1730 410.6
B 15 22 44223 101.92 1769 1775 416.5
B 8 4 16119 34.44 1769 1775 416.5
B 0 187 12783 26.43 1769 1775 416.5
C 15 241 272599 617.48 1585 1640 438.8
C 3 111 17536 36.23 1585 1640 438.8
C 3 79 12222 24.12 1585 1640 438.8
D 12 22 109318 227.78 1572 1621 472.8
D 10 85 40461 82.15 1572 1621 472.8
D 13 11 31980 64.21 1572 1621 472.8

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