ASTROSAT CZTI

Data Quality Report

Orbit 29803

Creation date: 2024-06-27T20:07:53.404102
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_291T01_9000004278_29803cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29803cztM0_level2_quad_clean.evt
Size (bytes)737,490,24072,241,920
Size703.3 MB 68.9 MB
Events in quadrant A3,672,861469,036
Events in quadrant B9,838,559422,045
Events in quadrant C3,762,615430,554
Events in quadrant D4,628,488418,433

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150322
B0335852
C0153012
D0181992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6404931.452217%
B6404236536.930044%
C64042674.169269%
D64042343.653966%

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 7719 6405 8 8 0.10% 0.12%
B 7719 6405 1755 1755 22.74% 27.40%
C 7719 6405 13 13 0.17% 0.20%
D 7719 6405 140 140 1.81% 2.19%

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 12 96 38504 205.21 941 927 183.1
A 13 254 14970 76.69 941 927 183.1
A 3 137 8240 39.94 941 927 183.1
B 0 189 4482290 29506.42 831 815 151.9
B 6 159 1694308 11150.1 831 815 151.9
B 0 229 352170 2313.35 831 815 151.9
C 14 238 196065 1000.19 863 872 195.2
C 10 22 112250 570.71 863 872 195.2
C 14 254 72424 366.64 863 872 195.2
D 8 195 510872 2531.78 874 856 201.4
D 7 80 348623 1726.36 874 856 201.4
D 7 238 240014 1187.21 874 856 201.4

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