ASTROSAT CZTI

Data Quality Report

Orbit 03476

Creation date: 2024-06-27T14:29:54.135853
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_245T01_9000000460_03476cztM0_level2.evt modeM0/AS1G05_245T01_9000000460_03476cztM0_level2_quad_clean.evt
Size (bytes)525,867,84081,414,720
Size501.5 MB 77.6 MB
Events in quadrant A5,339,554475,784
Events in quadrant B3,544,344502,706
Events in quadrant C3,624,559510,460
Events in quadrant D2,951,548497,715

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207133
B0151842
C0157932
D0141642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68644626.730769%
B6864410.597319%
C68641442.097902%
D6864180.262238%

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 7749 6865 257 257 3.32% 3.74%
B 7749 6865 5 5 0.06% 0.07%
C 7749 6865 89 89 1.15% 1.30%
D 7749 6865 7 7 0.09% 0.10%

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 0 118 1591568 10247.63 753 736 155.2
A 0 50 637771 4103.58 753 736 155.2
A 0 226 152546 977.91 753 736 155.2
B 15 204 259516 1693.99 786 768 152.7
B 2 249 133763 870.7 786 768 152.7
B 4 200 37548 240.79 786 768 152.7
C 7 220 640670 3602.38 759 763 177.6
C 1 192 6676 33.29 759 763 177.6
C 13 61 6369 31.56 759 763 177.6
D 13 223 22226 119.4 754 733 180.0
D 13 239 21509 115.41 754 733 180.0
D 8 195 14098 74.24 754 733 180.0

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