ASTROSAT CZTI

Data Quality Report

Orbit 56773

Creation date: 2026-03-27T05:21:53.591361
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_083T05_9000006560_56773cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56773cztM0_level2_quad_clean.evt
Size (bytes)749,736,000106,441,920
Size715.0 MB 101.5 MB
Events in quadrant A5,359,869739,522
Events in quadrant B6,700,533725,587
Events in quadrant C11,204,849532,963
Events in quadrant D3,868,676668,921

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0215991
B0256171
C0389631
D0175921

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79941131.413560%
B7994102412.809607%
C7994211726.482362%
D7994710.888166%

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 7994 7994 33 33 0.41% 0.41%
B 7994 7994 549 549 6.87% 6.87%
C 7994 7994 1853 1853 23.18% 23.18%
D 7994 7994 37 37 0.46% 0.46%

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 14 1751890 8351.15 847 825 209.7
A 10 251 157246 746.0 847 825 209.7
A 12 15 77379 365.1 847 825 209.7
B 4 206 2881955 16504.62 803 772 174.6
B 10 247 189597 1081.67 803 772 174.6
B 7 252 116461 662.71 803 772 174.6
C 9 38 4028159 20228.98 725 716 199.1
C 15 230 3713791 18649.98 725 716 199.1
C 14 96 409224 2051.85 725 716 199.1
D 2 249 198691 862.07 817 778 229.6
D 2 31 120513 521.54 817 778 229.6
D 5 173 70269 302.69 817 778 229.6

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