ASTROSAT CZTI

Data Quality Report

Orbit 03855

Creation date: 2024-06-27T14:34:26.179688
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_189T01_9000000492_03855cztM0_level2.evt modeM0/AS1G05_189T01_9000000492_03855cztM0_level2_quad_clean.evt
Size (bytes)655,931,52079,476,480
Size625.5 MB 75.8 MB
Events in quadrant A4,403,945459,016
Events in quadrant B4,557,453456,053
Events in quadrant C5,727,457438,203
Events in quadrant D4,576,483439,756

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0191623
B0191182
C0227052
D0201132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A88404765.384615%
B88404885.520362%
C88405726.470588%
D88405075.735294%

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 8895 8840 10 10 0.11% 0.11%
B 8895 8840 1 1 0.01% 0.01%
C 8895 8840 86 86 0.97% 0.97%
D 8895 8841 105 105 1.18% 1.19%

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 8 15 83972 370.91 1086 1061 223.5
A 0 149 41217 179.64 1086 1061 223.5
A 0 50 40012 174.25 1086 1061 223.5
B 15 204 243111 1119.26 1094 1067 216.3
B 14 167 59545 270.41 1094 1067 216.3
B 12 111 19967 87.4 1094 1067 216.3
C 2 53 1566745 6393.63 1037 1038 244.9
C 10 65 28487 112.09 1037 1038 244.9
C 8 128 26644 104.56 1037 1038 244.9
D 8 112 285984 1016.18 1039 1011 280.4
D 2 63 123110 435.39 1039 1011 280.4
D 12 227 83049 292.54 1039 1011 280.4

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
Veto Counter