ASTROSAT CZTI

Data Quality Report

Orbit 22152

Creation date: 2024-06-27T18:37:31.259181
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/AS1T03_145T01_9000003278_22152cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22152cztM0_level2_quad_clean.evt
Size (bytes)476,576,640103,104,000
Size454.5 MB 98.3 MB
Events in quadrant A3,416,403664,000
Events in quadrant B3,591,852670,187
Events in quadrant C3,470,768638,381
Events in quadrant D3,452,156635,890

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151601
B0155111
C0152871
D0153372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7391300.405899%
B7392560.757576%
C7392741.001082%
D7391140.189420%

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 7841 7392 0 0 0.00% 0.00%
B 7842 7393 7 7 0.09% 0.09%
C 7842 7393 12 12 0.15% 0.16%
D 7841 7392 5 5 0.06% 0.07%

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 11324 58.5 886 868 178.7
A 3 137 7932 39.52 886 868 178.7
A 0 226 7625 37.81 886 868 178.7
B 10 246 64131 370.77 882 857 170.7
B 3 64 52165 300.66 882 857 170.7
B 12 111 21328 119.96 882 857 170.7
C 14 238 132016 660.92 841 844 198.5
C 10 22 51976 257.63 841 844 198.5
C 13 61 5884 25.39 841 844 198.5
D 7 238 136411 650.98 855 829 208.3
D 13 172 33088 154.89 855 829 208.3
D 2 234 30833 144.06 855 829 208.3

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