ASTROSAT CZTI

Data Quality Report

Orbit 50759

Creation date: 2025-02-15T10:10:01.429342
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/AS1C07_001T01_9000006450_50759cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50759cztM0_level2_quad_clean.evt
Size (bytes)804,378,240117,639,360
Size767.1 MB 112.2 MB
Events in quadrant A5,298,389795,933
Events in quadrant B8,785,354751,956
Events in quadrant C7,639,853742,951
Events in quadrant D7,390,436676,402

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01740
B01740
C01740
D01740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217091
B0321871
C0285931
D0279911

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85561922.244039%
B8556155418.162693%
C85576027.035176%
D85577158.355732%

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 8811 8557 88 88 1.00% 1.03%
B 8811 8557 961 961 10.91% 11.23%
C 8812 8558 423 423 4.80% 4.94%
D 8812 8558 515 515 5.84% 6.02%

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 4 392069 1705.0 915 894 229.4
A 4 3 233593 1014.26 915 894 229.4
A 3 63 124920 540.59 915 894 229.4
B 4 206 4236952 23158.51 859 829 182.9
B 7 0 419982 2291.47 859 829 182.9
B 10 247 136938 744.1 859 829 182.9
C 5 10 1581493 6573.97 881 873 240.4
C 10 69 726141 3016.47 881 873 240.4
C 13 3 544447 2260.78 881 873 240.4
D 15 93 799799 3372.64 857 828 236.9
D 2 216 544700 2295.81 857 828 236.9
D 15 108 327644 1379.56 857 828 236.9

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