ASTROSAT CZTI

Data Quality Report

Orbit 53269

Creation date: 2025-08-03T09:00:23.386118
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/AS1C09_011T08_9000006492_53269cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53269cztM0_level2_quad_clean.evt
Size (bytes)659,937,60094,276,800
Size629.4 MB 89.9 MB
Events in quadrant A4,602,486644,826
Events in quadrant B5,460,274663,910
Events in quadrant C9,894,638471,589
Events in quadrant D3,938,081594,656

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185092
B0210972
C0341712
D0169042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68812403.487865%
B68815798.414475%
C6881209930.504287%
D68811331.932859%

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 7901 6882 225 225 2.85% 3.27%
B 7901 6882 320 320 4.05% 4.65%
C 7901 6881 1917 1917 24.26% 27.86%
D 7901 6882 126 126 1.59% 1.83%

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 3 27 792352 4580.1 695 678 172.9
A 3 62 546551 3158.06 695 678 172.9
A 12 80 143515 826.36 695 678 172.9
B 10 254 1272249 8651.6 688 664 147.0
B 4 171 492919 3349.2 688 664 147.0
B 2 249 360436 2447.81 688 664 147.0
C 10 22 1801481 10865.53 602 596 165.7
C 15 224 1479352 8921.99 602 596 165.7
C 13 3 1454072 8769.46 602 596 165.7
D 2 249 276165 1418.05 678 647 194.3
D 12 3 248266 1274.45 678 647 194.3
D 6 42 163950 840.49 678 647 194.3

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