ASTROSAT CZTI

Data Quality Report

Orbit 54899

Creation date: 2025-11-21T02:56:20.953786
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_54899cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54899cztM0_level2_quad_clean.evt
Size (bytes)695,427,840113,267,520
Size663.2 MB 108.0 MB
Events in quadrant A5,383,324770,604
Events in quadrant B4,595,453826,001
Events in quadrant C6,458,324685,383
Events in quadrant D8,669,579577,411

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02166530
B01968828
C02507136
D03161642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82011902.316791%
B82042212.693808%
C819882210.026836%
D8207167620.421591%

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 8216 8212 69 69 0.84% 0.84%
B 8216 8211 98 98 1.19% 1.19%
C 8217 8208 493 493 6.00% 6.01%
D 8216 8215 1333 1333 16.22% 16.23%

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 1334273 5917.77 908 883 225.3
A 0 8 369946 1637.95 908 883 225.3
A 7 14 75084 329.31 908 883 225.3
B 10 247 384715 1985.32 897 863 193.3
B 5 236 321601 1658.89 897 863 193.3
B 10 245 145388 747.5 897 863 193.3
C 4 5 1139685 4790.92 866 855 237.7
C 15 209 1066760 4484.13 866 855 237.7
C 6 223 329812 1383.88 866 855 237.7
D 11 129 1877773 8131.2 818 784 230.8
D 2 249 1684709 7294.84 818 784 230.8
D 15 94 472779 2044.7 818 784 230.8

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