ASTROSAT CZTI

Data Quality Report

Orbit 58099

Creation date: 2026-06-24T11:51:49.817274
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_58099cztM0_level2.fits modeM0/AS1A14_042T02_9000006586_58099cztM0_level2_quad_clean.evt
Size (bytes)802,581,12098,994,240
Size765.4 MB 94.4 MB
Events in quadrant A4,075,864691,577
Events in quadrant B10,860,393519,703
Events in quadrant C3,999,611671,400
Events in quadrant D10,193,266591,765

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0176722
B0374501
C0172891
D0355681

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A75052873.824117%
B7505267135.589607%
C7505961.279147%
D75067109.459099%

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 7880 7506 229 229 2.91% 3.05%
B 7880 7505 2153 2153 27.32% 28.69%
C 7880 7506 76 76 0.96% 1.01%
D 7881 7506 779 779 9.88% 10.38%

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 10 253 661974 3298.66 811 792 200.4
A 10 251 203728 1012.46 811 792 200.4
A 13 248 22754 109.57 811 792 200.4
B 10 128 6598012 42638.03 716 691 154.7
B 5 172 1051741 6792.86 716 691 154.7
B 5 185 126313 811.89 716 691 154.7
C 12 252 577226 2649.46 799 794 217.6
C 9 38 115203 525.86 799 794 217.6
C 15 208 86871 395.64 799 794 217.6
D 12 110 6525124 29736.3 772 738 219.4
D 12 1 381476 1735.3 772 738 219.4
D 2 249 81328 367.31 772 738 219.4

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