ASTROSAT CZTI

Data Quality Report

Orbit 31777

Creation date: 2024-06-27T20:32:36.169439
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_9000004638_31777cztM0_level2.evt modeM0/AS1A10_109T01_9000004638_31777cztM0_level2_quad_clean.evt
Size (bytes)618,059,520117,483,840
Size589.4 MB 112.0 MB
Events in quadrant A3,907,348779,526
Events in quadrant B5,749,122778,861
Events in quadrant C3,852,716750,922
Events in quadrant D4,707,813733,388

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162732
B0225152
C0160622
D0191662

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7413690.930797%
B7413861.160124%
C74131622.185350%
D7413380.512613%

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 7718 7415 39 39 0.51% 0.53%
B 7718 7415 7 7 0.09% 0.09%
C 7718 7415 38 38 0.49% 0.51%
D 7718 7415 24 24 0.31% 0.32%

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 323336 1737.59 923 906 185.6
A 14 238 23979 124.34 923 906 185.6
A 13 254 13214 66.33 923 906 185.6
B 6 159 2011441 11427.62 915 891 175.9
B 0 229 64403 360.99 915 891 175.9
B 10 245 29791 164.26 915 891 175.9
C 14 238 146349 691.08 894 902 210.5
C 0 10 101034 475.77 894 902 210.5
C 10 22 73586 345.35 894 902 210.5
D 8 195 1149569 5330.07 898 877 215.5
D 12 218 78736 361.28 898 877 215.5
D 2 250 39004 176.91 898 877 215.5

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