ASTROSAT CZTI

Data Quality Report

Orbit 55180

Creation date: 2025-12-10T01:21:08.593328
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/AS1A14_022T16_9000006532_55180cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55180cztM0_level2_quad_clean.evt
Size (bytes)438,534,72094,890,240
Size418.2 MB 90.5 MB
Events in quadrant A4,507,436607,869
Events in quadrant B3,089,106669,938
Events in quadrant C3,771,291582,696
Events in quadrant D4,346,251547,721

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180171
B0142551
C0158122
D0176551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66733014.510715%
B6673490.734302%
C66721902.847722%
D66733074.600629%

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 7613 6674 240 240 3.15% 3.60%
B 7613 6674 7 7 0.09% 0.10%
C 7612 6673 146 146 1.92% 2.19%
D 7613 6674 214 214 2.81% 3.21%

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 45 674141 3887.59 698 681 173.2
A 3 78 449613 2591.49 698 681 173.2
A 12 115 232741 1339.58 698 681 173.2
B 2 249 248871 1633.79 701 673 151.9
B 10 247 29318 188.56 701 673 151.9
B 5 185 21835 139.3 701 673 151.9
C 10 22 428291 2267.04 684 679 188.6
C 1 16 205561 1086.21 684 679 188.6
C 7 2 186159 983.34 684 679 188.6
D 2 249 1139343 5948.5 678 647 191.4
D 11 129 366520 1911.31 678 647 191.4
D 5 173 55827 288.26 678 647 191.4

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