ASTROSAT CZTI

Data Quality Report

Orbit 57315

Creation date: 2026-05-02T17:02:04.612328
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_049T03_9000006570_57315cztM0_level2.fits modeM0/AS1A14_049T03_9000006570_57315cztM0_level2_quad_clean.evt
Size (bytes)1,377,846,720263,658,240
Size1.3 GB 251.4 MB
Events in quadrant A12,143,7891,734,113
Events in quadrant B9,591,0151,858,955
Events in quadrant C14,340,1751,556,555
Events in quadrant D13,466,0371,530,204

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0493423
B0417293
C0560183
D0530013

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A189135953.145984%
B189145522.918473%
C1891415758.327165%
D189148284.377710%

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 20228 18913 277 277 1.37% 1.46%
B 20229 18914 91 91 0.45% 0.48%
C 20229 18914 1181 1181 5.84% 6.24%
D 20229 18914 531 531 2.62% 2.81%

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 0 12 3518494 6980.86 2044 1992 503.7
A 3 14 232521 457.64 2044 1992 503.7
A 10 251 176544 346.52 2044 1992 503.7
B 5 185 770106 1796.94 2011 1934 427.5
B 7 252 270930 629.25 2011 1934 427.5
B 10 16 267559 621.36 2011 1934 427.5
C 15 224 5267554 10094.9 1930 1910 521.6
C 14 254 458733 875.79 1930 1910 521.6
C 12 252 346799 661.19 1930 1910 521.6
D 3 224 3069569 5566.45 1969 1875 551.1
D 2 249 1272653 2305.88 1969 1875 551.1
D 8 240 875897 1585.95 1969 1875 551.1

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