ASTROSAT CZTI

Data Quality Report

Orbit 03917

Creation date: 2024-06-27T14:35:12.175887
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_172T01_9000000502_03917cztM0_level2.evt modeM0/AS1G05_172T01_9000000502_03917cztM0_level2_quad_clean.evt
Size (bytes)498,631,68077,590,080
Size475.5 MB 74.0 MB
Events in quadrant A4,042,136465,235
Events in quadrant B3,804,030477,788
Events in quadrant C2,849,769476,318
Events in quadrant D3,944,528457,272

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165753
B0160132
C0136562
D0165772

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67893194.698777%
B6789410.603918%
C678970.103108%
D67891392.047430%

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 7739 6790 269 269 3.48% 3.96%
B 7739 6790 9 9 0.12% 0.13%
C 7739 6790 1 1 0.01% 0.01%
D 7739 6790 123 123 1.59% 1.81%

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 0 50 739572 4813.97 741 723 153.5
A 8 15 183258 1189.31 741 723 153.5
A 0 118 110972 718.33 741 723 153.5
B 15 204 693187 4621.56 764 744 149.8
B 7 221 89627 593.23 764 744 149.8
B 14 167 21717 139.98 764 744 149.8
C 1 16 12794 71.03 724 726 169.9
C 13 61 6130 31.81 724 726 169.9
C 14 67 5855 30.19 724 726 169.9
D 2 63 470237 2686.92 716 694 174.8
D 2 232 390898 2232.91 716 694 174.8
D 9 82 113297 644.36 716 694 174.8

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