ASTROSAT CZTI

Data Quality Report

Orbit 50982

Creation date: 2025-03-02T09:17:49.233431
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_001T02_9000006452_50982cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50982cztM0_level2_quad_clean.evt
Size (bytes)577,572,48086,892,480
Size550.8 MB 82.9 MB
Events in quadrant A3,413,741580,872
Events in quadrant B3,941,383619,941
Events in quadrant C5,114,088539,001
Events in quadrant D8,413,419443,280

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145061
B0164311
C0197401
D0295151

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6415570.888542%
B64151902.961808%
C64165107.948878%
D6416128319.996883%

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 7275 6416 35 35 0.48% 0.55%
B 7275 6415 107 107 1.47% 1.67%
C 7276 6416 467 467 6.42% 7.28%
D 7276 6417 1399 1399 19.23% 21.80%

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 4 3 218544 1354.83 647 633 160.8
A 12 3 205847 1275.89 647 633 160.8
A 8 43 67750 417.29 647 633 160.8
B 4 81 727576 5233.07 643 622 138.9
B 12 32 151601 1086.84 643 622 138.9
B 7 252 98366 703.62 643 622 138.9
C 1 44 654107 3887.35 612 606 168.1
C 3 233 392546 2331.45 612 606 168.1
C 13 3 391330 2324.22 612 606 168.1
D 8 176 4255765 25951.64 574 553 164.0
D 7 39 502967 3064.12 574 553 164.0
D 7 96 181102 1101.13 574 553 164.0

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