ASTROSAT CZTI

Data Quality Report

Orbit 55692

Creation date: 2026-01-13T13:22:14.512397
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_099T04_9000006540_55692cztM0_level2.fits modeM0/AS1A14_099T04_9000006540_55692cztM0_level2_quad_clean.evt
Size (bytes)448,718,400101,468,160
Size427.9 MB 96.8 MB
Events in quadrant A4,265,589652,773
Events in quadrant B4,181,357700,412
Events in quadrant C3,838,205643,419
Events in quadrant D3,794,172600,355

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174962
B0171292
C0164372
D0162972

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68252573.765568%
B68253054.468864%
C68262163.164372%
D68261602.343979%

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 9025 6826 159 159 1.76% 2.33%
B 9025 6826 126 126 1.40% 1.85%
C 9026 6828 165 165 1.83% 2.42%
D 9026 6828 84 84 0.93% 1.23%

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 12 115 699195 3840.37 742 722 181.9
A 3 95 354772 1946.65 742 722 181.9
A 7 64 120797 660.2 742 722 181.9
B 5 236 816923 5189.29 733 705 157.3
B 5 172 153738 972.94 733 705 157.3
B 7 252 119202 753.37 733 705 157.3
C 6 223 380340 1873.77 728 718 202.6
C 9 38 262041 1289.86 728 718 202.6
C 10 19 126071 618.72 728 718 202.6
D 11 129 662202 3232.46 718 683 204.6
D 7 129 116815 567.47 718 683 204.6
D 10 181 67893 328.42 718 683 204.6

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