ASTROSAT CZTI

Data Quality Report

Orbit 51565

Creation date: 2025-04-10T15:34:59.741810
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_037T05_9000006460_51565cztM0_level2.fits modeM0/AS1A13_037T05_9000006460_51565cztM0_level2_quad_clean.evt
Size (bytes)1,625,040,000257,555,520
Size1.5 GB 245.6 MB
Events in quadrant A20,191,7381,575,564
Events in quadrant B12,272,9831,850,992
Events in quadrant C11,663,9031,633,247
Events in quadrant D14,581,3921,448,131

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0729814
B0489604
C0477454
D0562584

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18714226212.087207%
B187157033.756345%
C187158364.467005%
D1871516228.666845%

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 21669 18717 1537 1537 7.09% 8.21%
B 21669 18717 294 294 1.36% 1.57%
C 21669 18717 662 662 3.06% 3.54%
D 21669 18717 1354 1354 6.25% 7.23%

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 3 5770275 11907.16 1964 1915 484.4
A 7 64 2018992 4163.69 1964 1915 484.4
A 12 250 1612427 3324.45 1964 1915 484.4
B 4 81 1101971 2573.79 2009 1937 427.4
B 10 44 490150 1142.29 2009 1937 427.4
B 10 254 430088 1001.76 2009 1937 427.4
C 0 177 1502424 2753.9 1985 1961 544.8
C 13 3 981861 1798.48 1985 1961 544.8
C 15 147 579266 1059.57 1985 1961 544.8
D 8 176 2092654 3905.04 1914 1845 535.4
D 3 12 1761128 3285.85 1914 1845 535.4
D 12 6 1595414 2976.34 1914 1845 535.4

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