ASTROSAT CZTI

Data Quality Report

Orbit 13572

Creation date: 2024-06-27T16:42:52.187787
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/AS1G08_047T01_9000002002_13572cztM0_level2.evt modeM0/AS1G08_047T01_9000002002_13572cztM0_level2_quad_clean.evt
Size (bytes)456,183,36067,098,240
Size435.1 MB 64.0 MB
Events in quadrant A3,025,174398,024
Events in quadrant B3,269,478404,892
Events in quadrant C3,309,224400,658
Events in quadrant D3,773,088377,789

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131622
B0136741
C0135511
D0153671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6458160.247755%
B6458600.929080%
C6458290.449055%
D64581221.889130%

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 7519 6459 0 0 0.00% 0.00%
B 7519 6459 15 15 0.20% 0.23%
C 7519 6459 1 1 0.01% 0.02%
D 7519 6459 103 103 1.37% 1.59%

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 1 162 17638 107.74 775 759 156.7
A 0 226 7328 41.93 775 759 156.7
A 0 23 6106 34.13 775 759 156.7
B 0 182 50666 339.6 781 763 146.9
B 4 173 48080 322.0 781 763 146.9
B 3 64 44677 298.84 781 763 146.9
C 3 233 339985 1941.54 758 762 174.7
C 0 207 8853 46.31 758 762 174.7
C 13 61 5471 26.95 758 762 174.7
D 5 222 444408 2490.22 746 727 178.2
D 1 20 157144 877.91 746 727 178.2
D 8 195 152176 850.03 746 727 178.2

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