ASTROSAT CZTI

Data Quality Report

Orbit 55437

Creation date: 2025-12-27T08:07:16.346151
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_099T01_9000006536_55437cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55437cztM0_level2_quad_clean.evt
Size (bytes)496,252,800102,214,080
Size473.3 MB 97.5 MB
Events in quadrant A4,263,056660,798
Events in quadrant B3,674,366698,331
Events in quadrant C3,564,345632,260
Events in quadrant D6,253,755553,686

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186920
B0167610
C0164980
D0241750

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79032623.315197%
B7904330.417510%
C7904210.265688%
D79043874.896255%

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 8178 8178 197 197 2.41% 2.41%
B 8179 8179 18 18 0.22% 0.22%
C 8179 8179 12 12 0.15% 0.15%
D 8179 8179 308 308 3.77% 3.77%

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 4 159 932484 4576.22 810 787 203.6
A 0 8 77954 379.02 810 787 203.6
A 4 3 33292 159.65 810 787 203.6
B 7 252 145441 844.03 812 783 171.4
B 10 247 114369 662.74 812 783 171.4
B 0 171 50547 290.36 812 783 171.4
C 14 254 118585 528.36 808 800 222.9
C 13 3 100939 449.21 808 800 222.9
C 9 38 82306 365.62 808 800 222.9
D 11 129 1888142 8514.02 783 747 221.7
D 8 48 410964 1850.49 783 747 221.7
D 14 50 195664 879.27 783 747 221.7

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