ASTROSAT CZTI

Data Quality Report

Orbit 52439

Creation date: 2025-06-27T20:23:59.863277
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_037T01_9000006476_52439cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52439cztM0_level2_quad_clean.evt
Size (bytes)500,912,64069,192,000
Size477.7 MB 66.0 MB
Events in quadrant A2,177,893484,214
Events in quadrant B3,302,623521,588
Events in quadrant C5,192,128418,673
Events in quadrant D7,479,203317,742

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010953486
B013949522
C0199161012
D0280622422

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01066
B01053
C01075
D01086

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5065190.375123%
B5053761.504057%
C503862212.346169%
D4957145829.412951%

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 7775 5101 15 15 0.19% 0.29%
B 7775 5096 73 73 0.94% 1.43%
C 7775 5074 608 608 7.82% 11.98%
D 7775 4977 1477 1477 19.00% 29.68%

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 5 240 54254 418.04 512 499 128.6
A 12 17 36029 276.31 512 499 128.6
A 4 3 19651 148.94 512 499 128.6
B 7 0 757228 6991.15 507 490 108.2
B 10 254 230492 2124.88 507 490 108.2
B 8 234 177136 1631.95 507 490 108.2
C 4 5 1719540 12979.68 468 466 132.4
C 15 224 511734 3860.27 468 466 132.4
C 15 147 261070 1967.66 468 466 132.4
D 12 17 2528049 20906.49 417 397 120.9
D 15 93 2330794 19274.98 417 397 120.9
D 15 24 223336 1843.95 417 397 120.9

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