ASTROSAT CZTI

Data Quality Report

Orbit 51453

Creation date: 2025-04-03T02:19:16.814055
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/AS1A13_090T01_9000006458_51453cztM0_level2.fits modeM0/AS1A13_090T01_9000006458_51453cztM0_level2_quad_clean.evt
Size (bytes)589,106,88092,903,040
Size561.8 MB 88.6 MB
Events in quadrant A6,858,378573,652
Events in quadrant B3,657,619689,483
Events in quadrant C6,450,287512,113
Events in quadrant D4,321,195571,217

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249252
B0154772
C0238663
D0175872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6691105015.692722%
B66912253.362726%
C6690134420.089686%
D66902854.260090%

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 7686 6692 846 846 11.01% 12.64%
B 7686 6692 30 30 0.39% 0.45%
C 7685 6691 1246 1246 16.21% 18.62%
D 7685 6691 173 173 2.25% 2.59%

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 7 64 2310682 13556.57 692 674 170.4
A 12 3 643581 3772.98 692 674 170.4
A 3 130 415600 2435.04 692 674 170.4
B 4 206 195526 1251.29 730 704 155.7
B 0 171 127645 815.31 730 704 155.7
B 15 52 93790 597.87 730 704 155.7
C 4 12 1300555 7393.97 642 637 175.8
C 15 179 1300173 7391.79 642 637 175.8
C 1 60 610162 3466.99 642 637 175.8
D 8 176 625836 3209.51 699 672 194.8
D 11 176 344885 1767.14 699 672 194.8
D 10 181 211022 1079.91 699 672 194.8

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