ASTROSAT CZTI

Data Quality Report

Orbit 23041

Creation date: 2024-06-27T18:49:08.091473
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/AS1C05_004T01_9000003404_23041cztM0_level2.evt modeM0/AS1C05_004T01_9000003404_23041cztM0_level2_quad_clean.evt
Size (bytes)497,712,960108,129,600
Size474.7 MB 103.1 MB
Events in quadrant A3,032,624724,818
Events in quadrant B3,227,739744,623
Events in quadrant C3,269,279719,531
Events in quadrant D5,116,335646,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131702
B0137552
C0137852
D0195192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6288150.238550%
B6288691.097328%
C6288791.256361%
D62886189.828244%

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 7503 6289 0 0 0.00% 0.00%
B 7503 6289 28 28 0.37% 0.45%
C 7503 6289 12 12 0.16% 0.19%
D 7503 6289 458 458 6.10% 7.28%

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 15 174 13234 79.57 782 767 156.7
A 13 254 10205 60.24 782 767 156.7
A 0 226 6642 37.5 782 767 156.7
B 4 216 99186 680.31 782 765 144.7
B 0 190 25262 169.33 782 765 144.7
B 3 64 20821 138.63 782 765 144.7
C 14 238 123393 691.05 768 775 177.4
C 0 207 114023 638.24 768 775 177.4
C 10 22 19240 104.07 768 775 177.4
D 1 52 2023174 11421.13 734 713 177.1
D 9 85 117251 658.11 734 713 177.1
D 12 227 80758 452.03 734 713 177.1

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