ASTROSAT CZTI

Data Quality Report

Orbit 58117

Creation date: 2026-06-25T14:15:58.764432
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_042T02_9000006586_58117cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58117cztM0_level2_quad_clean.evt
Size (bytes)499,559,040104,074,560
Size476.4 MB 99.3 MB
Events in quadrant A3,297,530711,533
Events in quadrant B4,537,983735,074
Events in quadrant C3,181,027670,855
Events in quadrant D6,936,057551,103

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145983
B0180132
C0145232
D0255052

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69361442.076125%
B69372784.007496%
C69371261.816347%
D6937130618.826582%

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 8676 6938 1 1 0.01% 0.01%
B 8677 6939 35 35 0.40% 0.50%
C 8677 6939 0 0 0.00% 0.00%
D 8677 6939 961 961 11.08% 13.85%

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 11 3 89619 439.45 809 788 202.1
A 3 14 19183 91.0 809 788 202.1
A 4 3 15636 73.45 809 788 202.1
B 10 128 828887 4892.39 785 755 169.3
B 5 172 326626 1925.16 785 755 169.3
B 0 63 82323 481.88 785 755 169.3
C 1 16 56874 258.09 786 779 217.3
C 13 3 30477 136.64 786 779 217.3
C 14 254 13201 57.15 786 779 217.3
D 12 110 3504635 16720.24 737 706 209.6
D 2 249 218190 1037.8 737 706 209.6
D 7 222 92492 437.99 737 706 209.6

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