ASTROSAT CZTI

Data Quality Report

Orbit 03781

Creation date: 2024-06-27T14:33:35.827155
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_248T01_9000000486_03781cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03781cztM0_level2_quad_clean.evt
Size (bytes)575,426,88083,928,960
Size548.8 MB 80.0 MB
Events in quadrant A4,257,403516,130
Events in quadrant B3,720,313524,797
Events in quadrant C3,266,050515,786
Events in quadrant D5,697,133485,359

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175282
B0156681
C0148051
D0218981

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71673204.464909%
B71671331.855728%
C7167721.004604%
D71673114.339333%

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 7497 7167 167 167 2.23% 2.33%
B 7497 7168 12 12 0.16% 0.17%
C 7497 7168 0 0 0.00% 0.00%
D 7497 7167 207 207 2.76% 2.89%

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 748103 4375.14 829 810 170.8
A 13 251 127444 741.4 829 810 170.8
A 0 50 85199 494.07 829 810 170.8
B 15 204 201176 1222.05 842 820 164.0
B 0 172 61532 370.31 842 820 164.0
B 0 173 46551 278.93 842 820 164.0
C 2 53 45761 234.72 812 812 191.5
C 10 65 18629 93.04 812 812 191.5
C 8 128 14547 71.72 812 812 191.5
D 1 84 1726687 8891.27 804 779 194.1
D 13 249 218131 1119.72 804 779 194.1
D 1 20 196571 1008.65 804 779 194.1

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