ASTROSAT CZTI

Data Quality Report

Orbit 53261

Creation date: 2025-08-02T21:20:27.856813
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_9000006492_53261cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53261cztM0_level2_quad_clean.evt
Size (bytes)1,658,600,640245,620,800
Size1.5 GB 234.2 MB
Events in quadrant A12,633,9021,646,489
Events in quadrant B11,357,8631,792,952
Events in quadrant C23,196,4201,216,532
Events in quadrant D12,757,0531,485,970

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0506823
B0470913
C0818373
D0512293

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1877911346.038660%
B187809234.914803%
C18780459324.456869%
D1878010915.809372%

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 19869 18781 771 771 3.88% 4.11%
B 19870 18783 444 444 2.23% 2.36%
C 19870 18781 4258 4258 21.43% 22.67%
D 19870 18782 878 878 4.42% 4.67%

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 3 62 1331542 2779.64 1949 1904 478.3
A 0 8 956094 1994.76 1949 1904 478.3
A 7 206 755950 1576.35 1949 1904 478.3
B 2 249 1138787 2783.05 1934 1867 408.5
B 4 81 630830 1539.63 1934 1867 408.5
B 10 254 516295 1259.26 1934 1867 408.5
C 15 224 5113076 10854.24 1700 1678 470.9
C 1 241 3969940 8426.75 1700 1678 470.9
C 10 22 2150046 4562.14 1700 1678 470.9
D 12 3 1734703 3223.85 1891 1807 537.5
D 12 1 885561 1644.12 1891 1807 537.5
D 1 0 689448 1279.28 1891 1807 537.5

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