ASTROSAT CZTI

Data Quality Report

Orbit 57716

Creation date: 2026-05-29T15:14:29.873926
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_125T09_9000006578_57716cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57716cztM0_level2_quad_clean.evt
Size (bytes)583,845,12096,287,040
Size556.8 MB 91.8 MB
Events in quadrant A3,071,340663,769
Events in quadrant B3,418,558706,850
Events in quadrant C8,773,814498,187
Events in quadrant D5,810,022563,235

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142981
B0148421
C0309174
D0219671

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69311642.366181%
B69312223.203001%
C6931192127.716058%
D693170010.099553%

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 7441 6931 3 3 0.04% 0.04%
B 7441 6931 28 28 0.38% 0.40%
C 7441 6931 1408 1408 18.92% 20.31%
D 7441 6932 510 510 6.85% 7.36%

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 3 128 55316 291.21 760 739 187.4
A 13 248 48720 256.02 760 739 187.4
A 3 245 14733 74.67 760 739 187.4
B 4 80 162127 1026.47 744 717 157.2
B 10 16 77993 491.43 744 717 157.2
B 0 155 56511 354.82 744 717 157.2
C 15 224 4824575 27044.27 660 653 178.4
C 12 254 938904 5260.1 660 653 178.4
C 6 223 228911 1279.68 660 653 178.4
D 8 160 2198623 10822.88 723 690 203.1
D 3 224 268758 1320.0 723 690 203.1
D 3 12 206642 1014.13 723 690 203.1

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