ASTROSAT CZTI

Data Quality Report

Orbit 47954

Creation date: 2024-08-10T12:20:55.556530
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/AS1A13_062T02_9000006384_47954cztM0_level2.fits modeM0/AS1A13_062T02_9000006384_47954cztM0_level2_quad_clean.evt
Size (bytes)752,783,04097,447,680
Size717.9 MB 92.9 MB
Events in quadrant A7,372,687701,709
Events in quadrant B3,072,713785,856
Events in quadrant C3,109,897751,780
Events in quadrant D13,816,526266,714

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0261122
B0133652
C0135962
D04545122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63775909.251999%
B6377861.348597%
C6377580.909519%
D6374427367.037967%

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 7597 6377 378 378 4.98% 5.93%
B 7597 6378 1 1 0.01% 0.02%
C 7597 6378 18 18 0.24% 0.28%
D 7597 6376 4225 4225 55.61% 66.26%

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 10 83 3739745 24822.99 726 712 150.6
A 0 31 822196 5453.73 726 712 150.6
A 13 254 8100 49.05 726 712 150.6
B 15 19 28866 191.23 755 732 147.1
B 0 198 26662 176.25 755 732 147.1
B 12 111 18348 119.74 755 732 147.1
C 12 2 128671 729.24 752 758 175.4
C 14 254 41500 232.27 752 758 175.4
C 13 61 4981 24.07 752 758 175.4
D 2 165 11500354 83081.23 550 535 138.4
D 11 224 74529 534.57 550 535 138.4
D 2 37 60725 434.85 550 535 138.4

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