ASTROSAT CZTI

Data Quality Report

Orbit 00782

Creation date: 2024-06-27T14:02:53.119195
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/AS1P01_010T01_9000000108_00782cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00782cztM0_level2_quad_clean.evt
Size (bytes)1,060,015,68098,913,600
Size1010.9 MB 94.3 MB
Events in quadrant A7,315,611649,915
Events in quadrant B7,755,931664,243
Events in quadrant C9,885,024619,456
Events in quadrant D6,726,038619,379

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262910
B0275130
C0338210
D0245580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6345100.157604%
B6344110.173392%
C63442173.420555%
D6344350.551702%

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 7571 6347 165 165 2.18% 2.60%
B 7570 6346 214 214 2.83% 3.37%
C 7570 6346 1165 1165 15.39% 18.36%
D 7570 6346 126 126 1.66% 1.99%

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 12 243 41600 87.81 1884 1898 452.1
A 8 192 21884 44.2 1884 1898 452.1
A 15 233 15663 30.44 1884 1898 452.1
B 5 191 49428 102.21 2004 2011 463.9
B 15 85 18942 36.49 2004 2011 463.9
B 11 51 18236 34.97 2004 2011 463.9
C 9 83 2497085 5061.4 1782 1842 493.0
C 10 17 309255 623.56 1782 1842 493.0
C 15 241 55025 107.88 1782 1842 493.0
D 1 4 110377 208.19 1706 1766 521.7
D 13 25 95782 180.21 1706 1766 521.7
D 10 85 83103 155.91 1706 1766 521.7

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