ASTROSAT CZTI

Data Quality Report

Orbit 20220505_A09_142T03_9000005114_level2

Creation date: 2026-01-02T11:27:56.392259
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/AS1A09_142T03_9000005114cztM0_level2.fits modeM0/AS1A09_142T03_9000005114cztM0_level2_quad_clean.evt
Size (bytes)324,239,040322,251,840
Size309.2 MB 307.3 MB
Events in quadrant A1,954,1041,890,171
Events in quadrant B1,853,5841,880,203
Events in quadrant C1,919,3801,861,576
Events in quadrant D1,681,0501,715,519

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07140
B07140
C07140
D07140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0712830
B0813620
C0752580
D0796290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01110
B01110
C01110
D01110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A35115320.091129%
B351157042.004841%
C351153350.954008%
D351154621.315677%

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 46102 35115 0 0 0.00% 0.00%
B 46102 35107 0 0 0.00% 0.00%
C 46102 35113 0 0 0.00% 0.00%
D 46102 35103 0 0 0.00% 0.00%

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 0 29 1614 8.85 509 478 128.3
A 7 110 1585 8.63 509 478 128.3
A 9 19 1535 8.24 509 478 128.3
B 2 9 1613 11.7 489 465 98.1
B 3 80 1424 9.77 489 465 98.1
B 2 8 1335 8.87 489 465 98.1
C 1 81 1592 8.41 507 473 133.0
C 3 202 1583 8.35 507 473 133.0
C 1 80 1568 8.23 507 473 133.0
D 6 67 1232 6.13 479 436 129.7
D 10 189 1223 6.06 479 436 129.7
D 7 3 1222 6.06 479 436 129.7

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