ASTROSAT CZTI

Data Quality Report

Orbit 52895

Creation date: 2025-07-16T15:08:21.533472
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_9000006482_52895cztM0_level2.fits modeM0/AS1C09_011T08_9000006482_52895cztM0_level2_quad_clean.evt
Size (bytes)973,339,20099,331,200
Size928.2 MB 94.7 MB
Events in quadrant A15,927,624295,493
Events in quadrant B5,729,116813,111
Events in quadrant C6,615,472681,015
Events in quadrant D7,129,405652,835

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0527673
B0226900
C0253580
D0268500

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8122520964.134450%
B81222723.348929%
C81226898.483132%
D81227889.702044%

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 8122 8122 5035 5035 61.99% 61.99%
B 8122 8122 223 223 2.75% 2.75%
C 8122 8122 526 526 6.48% 6.48%
D 8122 8122 781 781 9.62% 9.62%

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 9 191 12913812 93803.77 545 529 137.7
A 3 78 164011 1187.55 545 529 137.7
A 15 174 155929 1128.85 545 529 137.7
B 10 254 1429640 7775.44 860 830 183.8
B 1 255 236302 1281.42 860 830 183.8
B 5 185 160500 868.91 860 830 183.8
C 7 80 998244 4490.03 816 807 222.1
C 15 147 627049 2819.07 816 807 222.1
C 15 224 328522 1475.23 816 807 222.1
D 8 176 1765405 7502.05 823 785 235.2
D 2 120 332163 1408.81 823 785 235.2
D 15 125 330663 1402.43 823 785 235.2

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