ASTROSAT CZTI

Data Quality Report

Orbit 57925

Creation date: 2026-06-12T17:24:49.852832
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_125T11_9000006582_57925cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57925cztM0_level2_quad_clean.evt
Size (bytes)1,202,688,000261,311,040
Size1.1 GB 249.2 MB
Events in quadrant A8,063,1211,724,371
Events in quadrant B9,688,5241,792,557
Events in quadrant C13,697,8791,584,473
Events in quadrant D11,624,3291,524,240

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382381
B0424581
C0537511
D0477561

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186663061.639344%
B186677574.055285%
C1866711446.128462%
D186678174.376708%

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 19746 18667 4 4 0.02% 0.02%
B 19747 18667 257 257 1.30% 1.38%
C 19747 18669 734 734 3.72% 3.93%
D 19747 18669 597 597 3.02% 3.20%

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 4 236 127686 253.71 2011 1958 495.6
A 3 245 51054 99.07 2011 1958 495.6
A 7 64 50177 97.3 2011 1958 495.6
B 3 238 1325074 3201.03 1961 1883 413.4
B 7 252 125925 300.08 1961 1883 413.4
B 0 153 72650 171.2 1961 1883 413.4
C 15 224 3061777 5929.36 1910 1887 516.1
C 1 16 994570 1923.59 1910 1887 516.1
C 10 250 741936 1434.04 1910 1887 516.1
D 8 160 1291823 2388.74 1933 1846 540.0
D 12 110 869004 1605.78 1933 1846 540.0
D 2 249 612090 1130.03 1933 1846 540.0

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