ASTROSAT CZTI

Data Quality Report

Orbit 14552

Creation date: 2024-06-27T16:56:46.545115
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/AS1G08_081T01_9000002144_14552cztM0_level2.evt modeM0/AS1G08_081T01_9000002144_14552cztM0_level2_quad_clean.evt
Size (bytes)487,031,04092,136,960
Size464.5 MB 87.9 MB
Events in quadrant A3,499,863582,622
Events in quadrant B3,486,419574,122
Events in quadrant C3,726,622565,973
Events in quadrant D3,545,946564,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149632
B0150611
C0153821
D0155901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72271081.494396%
B72271421.964854%
C7227801.106960%
D72271301.798810%

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 7518 7230 0 0 0.00% 0.00%
B 7518 7230 7 7 0.09% 0.10%
C 7518 7230 0 0 0.00% 0.00%
D 7518 7230 38 38 0.51% 0.53%

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 8 15 158129 908.54 854 833 173.1
A 0 23 25960 145.13 854 833 173.1
A 12 189 24391 136.07 854 833 173.1
B 0 189 69169 414.32 847 824 165.0
B 4 48 30926 182.49 847 824 165.0
B 0 230 21430 124.92 847 824 165.0
C 3 233 498533 2599.85 821 825 191.4
C 8 128 11627 56.43 821 825 191.4
C 13 61 6021 27.14 821 825 191.4
D 10 199 203883 1016.65 826 801 199.8
D 2 152 107316 533.22 826 801 199.8
D 9 1 38599 189.22 826 801 199.8

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