ASTROSAT CZTI

Data Quality Report

Orbit 26092

Creation date: 2024-06-27T19:24:37.714207
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/AS1A09_018T01_9000003774_26092cztM0_level2.evt modeM0/AS1A09_018T01_9000003774_26092cztM0_level2_quad_clean.evt
Size (bytes)531,371,520105,480,000
Size506.8 MB 100.6 MB
Events in quadrant A3,521,848687,552
Events in quadrant B3,609,980700,972
Events in quadrant C3,587,815655,420
Events in quadrant D4,870,769635,555

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151530
B0153430
C0153910
D0193310

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7391330.446489%
B7392520.703463%
C7391921.244757%
D73914125.574347%

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 8931 7392 0 0 0.00% 0.00%
B 8932 7392 0 0 0.00% 0.00%
C 8931 7392 0 0 0.00% 0.00%
D 8931 7393 403 403 4.51% 5.45%

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 13 254 12181 61.2 911 891 184.5
A 3 137 8604 41.81 911 891 184.5
A 0 226 7887 37.92 911 891 184.5
B 0 190 29065 159.69 906 882 176.5
B 12 111 21674 117.81 906 882 176.5
B 11 111 19153 103.52 906 882 176.5
C 14 238 137147 662.77 866 871 205.6
C 3 233 52466 250.93 866 871 205.6
C 14 225 15562 71.45 866 871 205.6
D 1 52 1549668 7538.28 856 836 205.5
D 2 234 32315 153.21 856 836 205.5
D 8 195 24967 117.44 856 836 205.5

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