ASTROSAT CZTI

Data Quality Report

Orbit 32249

Creation date: 2024-06-27T20:38:04.001604
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/AS1T04_054T01_9000004694_32249cztM0_level2.evt modeM0/AS1T04_054T01_9000004694_32249cztM0_level2_quad_clean.evt
Size (bytes)627,359,040102,908,160
Size598.3 MB 98.1 MB
Events in quadrant A3,242,487695,882
Events in quadrant B5,274,016701,803
Events in quadrant C4,118,238658,091
Events in quadrant D5,939,985621,479

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136933
B0199922
C0162882
D0220012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6293400.635627%
B62931282.034006%
C62932914.624186%
D62932854.528842%

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 7553 6294 1 1 0.01% 0.02%
B 7553 6294 26 26 0.34% 0.41%
C 7553 6294 71 71 0.94% 1.13%
D 7553 6294 182 182 2.41% 2.89%

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 5 168 30847 183.75 830 817 163.4
A 13 254 11850 67.51 830 817 163.4
A 13 6 8295 45.76 830 817 163.4
B 6 159 1754210 11445.64 826 806 153.2
B 5 172 106330 688.83 826 806 153.2
B 0 229 100374 649.95 826 806 153.2
C 3 233 435670 2345.3 795 804 185.4
C 0 10 366013 1969.63 795 804 185.4
C 14 238 142281 763.01 795 804 185.4
D 8 195 2547791 13477.24 794 775 189.0
D 13 249 185123 975.46 794 775 189.0
D 12 233 154676 814.35 794 775 189.0

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