ASTROSAT CZTI

Data Quality Report

Orbit 07641

Creation date: 2024-06-27T15:22:05.696734
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/AS1G06_016T01_9000001052_07641cztM0_level2.evt modeM0/AS1G06_016T01_9000001052_07641cztM0_level2_quad_clean.evt
Size (bytes)665,251,20065,090,880
Size634.4 MB 62.1 MB
Events in quadrant A3,258,972419,110
Events in quadrant B3,324,784420,541
Events in quadrant C9,415,939284,031
Events in quadrant D3,715,645400,957

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134222
B0135921
C0324461
D0148591

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6379460.721116%
B6379470.736793%
C6379232936.510425%
D63791051.646026%

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 7684 6380 0 0 0.00% 0.00%
B 7684 6380 2 2 0.03% 0.03%
C 7684 6379 2130 2130 27.72% 33.39%
D 7684 6380 61 61 0.79% 0.96%

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 0 128 15936 90.46 839 823 167.1
A 0 226 8132 43.75 839 823 167.1
A 12 194 7334 38.97 839 823 167.1
B 0 214 35475 222.25 830 812 156.0
B 0 219 29395 183.26 830 812 156.0
B 0 213 20210 124.37 830 812 156.0
C 9 68 6209053 39504.36 691 695 157.2
C 1 16 512674 3257.77 691 695 157.2
C 13 61 5161 28.42 691 695 157.2
D 2 152 499768 2514.34 811 787 198.5
D 14 34 61229 304.56 811 787 198.5
D 5 233 46033 227.99 811 787 198.5

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