ASTROSAT CZTI

Data Quality Report

Orbit 58090

Creation date: 2026-06-23T18:33:10.099924
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_042T02_9000006586_58090cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58090cztM0_level2_quad_clean.evt
Size (bytes)656,216,64094,962,240
Size625.8 MB 90.6 MB
Events in quadrant A3,119,715699,026
Events in quadrant B10,373,789507,530
Events in quadrant C3,355,321658,662
Events in quadrant D6,927,944547,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137492
B0354552
C0145192
D0251227

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66321001.507841%
B6632259539.128468%
C66321021.537998%
D663192713.979792%

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 7782 6632 1 1 0.01% 0.02%
B 7782 6632 1960 1960 25.19% 29.55%
C 7782 6632 16 16 0.21% 0.24%
D 7781 6631 784 784 10.08% 11.82%

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 61 22224 110.59 792 773 194.0
A 13 248 21515 106.94 792 773 194.0
A 13 254 9540 45.2 792 773 194.0
B 10 128 6527695 44495.29 684 658 146.7
B 5 172 797013 5428.81 684 658 146.7
B 0 156 100909 683.42 684 658 146.7
C 6 223 173286 826.61 759 750 208.7
C 15 208 117609 559.86 759 750 208.7
C 12 252 59080 279.45 759 750 208.7
D 12 110 2893742 13847.22 738 706 208.9
D 8 160 369558 1765.47 738 706 208.9
D 3 224 237907 1135.34 738 706 208.9

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