ASTROSAT CZTI

Data Quality Report

Orbit 20220628_A11_049T05_9000005212_level2

Creation date: 2026-01-03T13:25:12.602931
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/AS1A11_049T05_9000005212cztM0_level2.fits modeM0/AS1A11_049T05_9000005212cztM0_level2_quad_clean.evt
Size (bytes)440,576,640455,359,680
Size420.2 MB 434.3 MB
Events in quadrant A2,699,4622,819,221
Events in quadrant B2,542,4802,722,294
Events in quadrant C2,587,9362,623,167
Events in quadrant D2,238,6182,352,050

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09740
B09740
C09740
D09740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0992890
B01135630
C01013740
D01361060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01610
C01610
D01610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A477011290.270435%
B477019511.993669%
C477014460.934991%
D4770121014.404520%

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 63826 47700 0 0 0.00% 0.00%
B 63826 47700 0 0 0.00% 0.00%
C 63826 47697 0 0 0.00% 0.00%
D 63826 47690 0 0 0.00% 0.00%

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 19 2266 9.19 704 660 174.7
A 7 110 2239 9.04 704 660 174.7
A 0 29 2094 8.21 704 660 174.7
B 2 9 2215 11.95 672 642 131.6
B 3 80 1879 9.4 672 642 131.6
B 5 128 1801 8.8 672 642 131.6
C 3 203 2074 8.15 685 640 175.9
C 3 202 2038 7.95 685 640 175.9
C 1 65 1706 6.06 685 640 175.9
D 10 113 1639 6.07 642 586 173.3
D 4 160 1626 6.0 642 586 173.3
D 7 3 1592 5.8 642 586 173.3

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