ASTROSAT CZTI

Data Quality Report

Orbit 31820

Creation date: 2024-06-27T20:33:09.643240
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/AS1A10_109T01_9000004646_31820cztM0_level2.evt modeM0/AS1A10_109T01_9000004646_31820cztM0_level2_quad_clean.evt
Size (bytes)671,120,640101,370,240
Size640.0 MB 96.7 MB
Events in quadrant A4,211,856659,273
Events in quadrant B6,348,693655,511
Events in quadrant C4,591,369646,826
Events in quadrant D4,706,362626,539

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170221
B0238112
C0181671
D0187461

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69073735.400319%
B69075287.644419%
C69072794.039380%
D69072513.633994%

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 7357 6909 227 227 3.09% 3.29%
B 7357 6909 330 330 4.49% 4.78%
C 7357 6909 37 37 0.50% 0.54%
D 7357 6909 146 146 1.98% 2.11%

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 0 13 929229 5420.36 846 830 171.3
A 13 254 14286 78.56 846 830 171.3
A 13 6 11207 60.59 846 830 171.3
B 6 159 1815435 11458.68 835 816 158.4
B 10 245 1046065 6600.38 835 816 158.4
B 4 80 131702 826.5 835 816 158.4
C 3 233 954980 4880.46 824 830 195.5
C 0 10 229714 1170.74 824 830 195.5
C 14 238 148401 754.82 824 830 195.5
D 8 195 704326 3572.86 824 805 196.9
D 12 218 669357 3395.27 824 805 196.9
D 12 233 117961 594.98 824 805 196.9

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