ASTROSAT CZTI

Data Quality Report

Orbit 53450

Creation date: 2025-08-15T14:49:03.831583
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_002T06_9000006496_53450cztM0_level2.fits modeM0/AS1A14_002T06_9000006496_53450cztM0_level2_quad_clean.evt
Size (bytes)1,973,687,040225,123,840
Size1.8 GB 214.7 MB
Events in quadrant A17,509,9901,449,117
Events in quadrant B11,170,1061,823,093
Events in quadrant C31,337,814881,756
Events in quadrant D11,633,4141,403,706

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03700
B03700
C03700
D03700

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0645853
B0461456
C01055139
D0475263

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18248290615.925033%
B182465803.178779%
C18247865947.454376%
D182479345.118650%

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 19708 18252 2228 2228 11.31% 12.21%
B 19708 18251 172 172 0.87% 0.94%
C 19707 18250 7361 7361 37.35% 40.33%
D 19707 18251 647 647 3.28% 3.55%

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 15 174 4650645 10223.68 1829 1778 454.7
A 3 63 3705081 8144.22 1829 1778 454.7
A 4 249 1405254 3086.49 1829 1778 454.7
B 8 234 1207170 2911.96 1931 1861 413.9
B 4 171 1125767 2715.3 1931 1861 413.9
B 10 254 378127 909.04 1931 1861 413.9
C 1 241 9499208 24261.73 1445 1434 391.5
C 15 224 6426722 16413.17 1445 1434 391.5
C 15 178 5788298 14782.34 1445 1434 391.5
D 2 172 1784442 3428.47 1849 1771 520.0
D 3 12 667894 1281.1 1849 1771 520.0
D 12 3 380553 728.48 1849 1771 520.0

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