ASTROSAT CZTI

Data Quality Report

Orbit 54841

Creation date: 2025-11-17T04:58:27.548568
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_039T06_9000006526_54841cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54841cztM0_level2_quad_clean.evt
Size (bytes)517,063,680123,082,560
Size493.1 MB 117.4 MB
Events in quadrant A3,896,581808,122
Events in quadrant B4,827,794850,261
Events in quadrant C4,802,045760,357
Events in quadrant D4,944,350710,291

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0181690
B0206310
C0206540
D0212350

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8611460.534200%
B86112212.566485%
C86111561.811636%
D86112853.309720%

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 8611 8611 22 22 0.26% 0.26%
B 8611 8611 176 176 2.04% 2.04%
C 8611 8611 120 120 1.39% 1.39%
D 8611 8611 234 234 2.72% 2.72%

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 8 206 71968 307.82 929 906 230.9
A 13 248 70062 299.57 929 906 230.9
A 4 3 55353 235.85 929 906 230.9
B 5 185 553147 2847.03 906 873 194.0
B 2 249 380926 1959.21 906 873 194.0
B 10 247 146331 749.85 906 873 194.0
C 12 252 418952 1718.67 899 891 243.2
C 15 209 350058 1435.44 899 891 243.2
C 4 5 256704 1051.66 899 891 243.2
D 3 12 340370 1342.33 893 854 252.9
D 15 42 259334 1021.94 893 854 252.9
D 15 250 257685 1015.42 893 854 252.9

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