ASTROSAT CZTI

Data Quality Report

Orbit 55167

Creation date: 2025-12-17T13:37:34.535357
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_55167cztM0_level2.fits modeM0/AS1A14_022T16_9000006532_55167cztM0_level2_quad_clean.evt
Size (bytes)482,408,64095,351,040
Size460.1 MB 90.9 MB
Events in quadrant A5,845,696595,086
Events in quadrant B3,412,850675,938
Events in quadrant C3,871,791587,199
Events in quadrant D4,205,511561,498

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01362
B01360
C01360
D01362

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022206250
B015401111
C016444298
D017587234

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67055908.799403%
B67211442.142538%
C67002413.597015%
D67122183.247914%

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 7719 6730 583 583 7.55% 8.66%
B 7717 6742 69 69 0.89% 1.02%
C 7720 6730 152 152 1.97% 2.26%
D 7715 6740 199 199 2.58% 2.95%

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 78 2471239 14355.5 692 675 172.1
A 3 14 219248 1270.04 692 675 172.1
A 12 115 180308 1043.78 692 675 172.1
B 2 249 308744 2014.56 707 681 152.9
B 1 207 171618 1117.83 707 681 152.9
B 5 185 98435 639.26 707 681 152.9
C 10 22 270557 1426.17 688 681 189.2
C 1 16 263719 1390.04 688 681 189.2
C 13 3 142896 751.54 688 681 189.2
D 11 129 1137701 5772.12 690 660 197.0
D 8 160 80278 404.18 690 660 197.0
D 5 173 55270 277.22 690 660 197.0

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