ASTROSAT CZTI

Data Quality Report

Orbit 03894

Creation date: 2024-06-27T14:34:54.832492
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/AS1G05_239T02_9000000496_03894cztM0_level2.evt modeM0/AS1G05_239T02_9000000496_03894cztM0_level2_quad_clean.evt
Size (bytes)469,278,72057,432,960
Size447.5 MB 54.8 MB
Events in quadrant A3,560,625336,695
Events in quadrant B3,480,493339,352
Events in quadrant C3,757,846327,494
Events in quadrant D3,008,452318,469

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142242
B0142081
C0152421
D0130501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59691893.166360%
B59691001.675322%
C5969811.357011%
D5969721.206232%

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 7269 5969 95 95 1.31% 1.59%
B 7269 5969 7 7 0.10% 0.12%
C 7269 5969 29 29 0.40% 0.49%
D 7269 5969 38 38 0.52% 0.64%

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 13 251 378521 2502.8 743 728 150.9
A 0 118 140053 923.0 743 728 150.9
A 2 79 77767 510.37 743 728 150.9
B 7 221 288855 1997.05 755 741 144.3
B 15 204 195326 1348.76 755 741 144.3
B 4 48 30232 204.41 755 741 144.3
C 2 53 900552 5424.74 713 719 165.9
C 12 4 43525 258.06 713 719 165.9
C 7 222 20746 120.73 713 719 165.9
D 13 239 110463 637.74 712 694 172.1
D 2 14 36198 206.27 712 694 172.1
D 13 223 30051 170.56 712 694 172.1

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
Veto Counter