ASTROSAT CZTI

Data Quality Report

Orbit 56164

Creation date: 2026-02-14T05:59:52.269306
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_083T04_9000006550_56164cztM0_level2.fits modeM0/AS1A14_083T04_9000006550_56164cztM0_level2_quad_clean.evt
Size (bytes)652,959,360109,535,040
Size622.7 MB 104.5 MB
Events in quadrant A8,717,531612,566
Events in quadrant B4,176,717801,603
Events in quadrant C3,716,906714,103
Events in quadrant D6,933,660627,573

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0316100
B0183390
C0174300
D0263180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8068157519.521567%
B80681071.326227%
C8068210.260288%
D80686377.895389%

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 8068 8068 1111 1111 13.77% 13.77%
B 8068 8068 38 38 0.47% 0.47%
C 8068 8068 14 14 0.17% 0.17%
D 8068 8068 700 700 8.68% 8.68%

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 9 250 1804052 9303.21 774 755 193.8
A 0 250 1383850 7135.39 774 755 193.8
A 7 64 1079482 5565.15 774 755 193.8
B 10 247 173644 948.85 846 814 182.1
B 5 185 129381 705.85 846 814 182.1
B 7 0 122253 666.71 846 814 182.1
C 12 252 338860 1479.61 825 816 228.5
C 8 7 33023 140.97 825 816 228.5
C 13 3 29344 124.87 825 816 228.5
D 8 240 1788338 7992.53 791 758 223.7
D 8 129 726824 3246.35 791 758 223.7
D 11 129 557673 2490.05 791 758 223.7

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