ASTROSAT CZTI

Data Quality Report

Orbit 54805

Creation date: 2025-11-14T18:33:09.496456
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_039T06_9000006526_54805cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54805cztM0_level2_quad_clean.evt
Size (bytes)453,136,32082,969,920
Size432.1 MB 79.1 MB
Events in quadrant A2,490,671556,917
Events in quadrant B3,140,148592,604
Events in quadrant C7,168,850459,557
Events in quadrant D3,514,804490,739

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120921
B0136106
C0254809
D01466710

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5910691.167513%
B59071432.420857%
C5908101417.163169%
D59062013.403319%

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 6950 5910 2 2 0.03% 0.03%
B 6950 5909 70 70 1.01% 1.18%
C 6950 5910 942 942 13.55% 15.94%
D 6951 5909 134 134 1.93% 2.27%

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 94 23059 144.62 621 605 155.3
A 8 246 22598 141.65 621 605 155.3
A 13 254 11398 69.51 621 605 155.3
B 5 185 368142 2783.99 607 586 132.0
B 7 0 216597 1636.14 607 586 132.0
B 2 249 63071 473.28 607 586 132.0
C 9 38 4321174 27874.64 563 556 155.0
C 12 252 261461 1683.24 563 556 155.0
C 14 254 168655 1084.49 563 556 155.0
D 15 109 289537 1698.77 598 573 170.1
D 10 181 205372 1203.98 598 573 170.1
D 2 249 201342 1180.28 598 573 170.1

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