ASTROSAT CZTI

Data Quality Report

Orbit 36338

Creation date: 2022-06-18T16:38:07.638471
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_001T08_9000005190_36338cztM0_level2.evt modeM0/AS1C07_001T08_9000005190_36338cztM0_level2_quad_clean.evt
Size (bytes)448,542,72085,268,160
Size427.8 MB 81.3 MB
Events in quadrant A2,736,767552,086
Events in quadrant B3,873,793538,640
Events in quadrant C3,050,089557,592
Events in quadrant D3,530,906529,839

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120043
B0155592
C0127352
D0145292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5776110.190443%
B57763175.488227%
C5776510.882964%
D57761672.891274%

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 7148 5777 6 6 0.08% 0.10%
B 7148 5777 210 210 2.94% 3.64%
C 7148 5777 37 37 0.52% 0.64%
D 7148 5777 173 173 2.42% 2.99%

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 194783 1519.58 631 616 127.8
A 9 143 80332 623.87 631 616 127.8
A 13 254 10405 76.61 631 616 127.8
B 5 172 639926 5424.24 615 597 117.9
B 5 236 304211 2575.94 615 597 117.9
B 0 190 258930 2191.77 615 597 117.9
C 15 214 250220 1727.17 619 622 144.5
C 0 10 177416 1223.38 619 622 144.5
C 0 207 177041 1220.79 619 622 144.5
D 12 6 635762 4288.21 610 594 148.1
D 13 249 163025 1096.62 610 594 148.1
D 2 250 126950 853.07 610 594 148.1

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