ASTROSAT CZTI

Data Quality Report

Orbit 56467

Creation date: 2026-03-06T15:01:53.820444
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_060T01_9000006556_56467cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56467cztM0_level2_quad_clean.evt
Size (bytes)742,034,880103,141,440
Size707.7 MB 98.4 MB
Events in quadrant A12,104,469492,915
Events in quadrant B3,900,227785,716
Events in quadrant C5,014,710687,484
Events in quadrant D5,844,533614,839

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0413070
B0171180
C0205180
D0226383

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7790284536.521181%
B77901702.182285%
C77913154.043127%
D77906077.792041%

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 7790 7790 2503 2503 32.13% 32.13%
B 7790 7790 30 30 0.39% 0.39%
C 7791 7791 265 265 3.40% 3.40%
D 7790 7790 515 515 6.61% 6.61%

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 95 3834544 21151.26 731 713 181.3
A 12 3 2598497 14331.99 731 713 181.3
A 4 206 1209804 6670.56 731 713 181.3
B 5 172 133987 735.35 851 818 181.1
B 0 213 81031 442.93 851 818 181.1
B 7 252 69187 377.53 851 818 181.1
C 15 230 1210728 5376.23 830 823 225.0
C 13 3 288893 1280.04 830 823 225.0
C 12 252 104275 459.69 830 823 225.0
D 2 249 1179590 5187.7 811 773 227.2
D 12 4 429872 1888.36 811 773 227.2
D 8 129 240762 1056.14 811 773 227.2

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