ASTROSAT CZTI

Data Quality Report

Orbit 58392

Creation date: 2026-07-14T05:36:37.711654
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_045T01_9000006590_58392cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58392cztM0_level2_quad_clean.evt
Size (bytes)2,299,403,520404,760,960
Size2.1 GB 386.0 MB
Events in quadrant A15,845,4162,726,037
Events in quadrant B24,731,0062,650,135
Events in quadrant C15,827,0372,579,504
Events in quadrant D26,483,3722,313,009

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05860
B05860
C05860
D05860

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0677975
B0934085
C0680695
D0984868

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A288796582.278472%
B28880357712.385734%
C288809323.227147%
D2887925468.816095%

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 31838 28882 363 363 1.14% 1.26%
B 31839 28882 2476 2476 7.78% 8.57%
C 31839 28883 793 793 2.49% 2.75%
D 31838 28883 2594 2594 8.15% 8.98%

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 4 249 1205002 1541.21 3174 3091 779.8
A 2 143 502699 640.65 3174 3091 779.8
A 12 114 417629 531.56 3174 3091 779.8
B 5 172 8224460 12631.58 3047 2928 650.9
B 6 255 957370 1466.41 3047 2928 650.9
B 0 153 691287 1057.6 3047 2928 650.9
C 6 223 1645821 1955.34 3063 3041 840.2
C 15 147 705718 836.37 3063 3041 840.2
C 4 5 404557 477.91 3063 3041 840.2
D 5 113 7938992 9333.91 2992 2855 850.2
D 2 249 2832249 3327.73 2992 2855 850.2
D 11 129 2064571 2424.84 2992 2855 850.2

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