ASTROSAT CZTI

Data Quality Report

Orbit 58387

Creation date: 2026-07-13T18:28:34.968642
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_045T01_9000006590_58387cztM0_level2.fits modeM0/AS1A14_045T01_9000006590_58387cztM0_level2_quad_clean.evt
Size (bytes)502,752,96098,648,640
Size479.5 MB 94.1 MB
Events in quadrant A3,753,162654,425
Events in quadrant B6,741,772636,936
Events in quadrant C3,424,691625,388
Events in quadrant D4,153,683588,341

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161050
B0247980
C0153430
D0168200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69161211.749566%
B691781311.753650%
C6917751.084285%
D6917891.286685%

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 6916 6916 94 94 1.36% 1.36%
B 6916 6916 576 576 8.33% 8.33%
C 6917 6917 72 72 1.04% 1.04%
D 6917 6917 95 95 1.37% 1.37%

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 8 237 233994 1225.73 763 743 190.3
A 10 251 148414 776.01 763 743 190.3
A 4 249 147547 771.46 763 743 190.3
B 5 172 2131944 13602.65 727 701 156.7
B 5 185 706760 4506.42 727 701 156.7
B 0 153 161450 1025.98 727 701 156.7
C 15 148 325703 1600.67 738 730 203.0
C 4 5 111561 545.9 738 730 203.0
C 12 252 20486 97.31 738 730 203.0
D 11 129 589199 2793.61 740 705 210.7
D 10 86 161906 765.23 740 705 210.7
D 2 153 85913 404.49 740 705 210.7

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