ASTROSAT CZTI

Data Quality Report

Orbit 55367

Creation date: 2025-12-22T15:38:02.355686
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_009T01_9000006534_55367cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55367cztM0_level2_quad_clean.evt
Size (bytes)1,165,642,560240,960,960
Size1.1 GB 229.8 MB
Events in quadrant A13,078,7401,413,395
Events in quadrant B7,991,0451,703,063
Events in quadrant C9,894,3601,536,411
Events in quadrant D10,826,9371,434,486

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03520
B03520
C03520
D03520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0517091
B0369671
C0423001
D0447861

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17525179910.265335%
B175252651.512126%
C175253391.934379%
D175255122.921541%

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 17850 17525 1241 1241 6.95% 7.08%
B 17850 17525 33 33 0.18% 0.19%
C 17850 17526 204 204 1.14% 1.16%
D 17850 17526 401 401 2.25% 2.29%

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 3749966 8565.68 1773 1727 437.6
A 3 78 1309125 2987.74 1773 1727 437.6
A 0 8 811278 1850.03 1773 1727 437.6
B 0 199 327677 834.47 1831 1761 390.6
B 5 185 202062 512.85 1831 1761 390.6
B 10 247 74060 185.11 1831 1761 390.6
C 9 38 1194114 2446.11 1801 1789 487.4
C 13 3 668237 1367.25 1801 1789 487.4
C 12 252 461888 943.91 1801 1789 487.4
D 11 129 1350843 2691.65 1789 1707 501.2
D 2 249 364926 724.65 1789 1707 501.2
D 10 199 311205 617.48 1789 1707 501.2

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