ASTROSAT CZTI

Data Quality Report

Orbit 37680

Creation date: 2024-06-27T21:43:01.703262
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/AS1A11_075T01_9000005342_37680cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37680cztM0_level2_quad_clean.evt
Size (bytes)438,189,12098,553,600
Size417.9 MB 94.0 MB
Events in quadrant A2,952,088660,868
Events in quadrant B2,836,448677,332
Events in quadrant C2,943,168676,092
Events in quadrant D4,202,574622,778

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119123
B0115112
C0117742
D0160012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4955320.645812%
B4955791.594349%
C4955531.069627%
D49552675.388496%

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 7078 4956 16 16 0.23% 0.32%
B 7078 4955 42 42 0.59% 0.85%
C 7077 4954 41 41 0.58% 0.83%
D 7077 4954 258 258 3.65% 5.21%

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 10 83 314775 2515.93 624 613 124.9
A 9 143 91985 731.74 624 613 124.9
A 6 10 65595 520.4 624 613 124.9
B 5 172 147611 1269.65 625 610 115.8
B 15 85 78432 672.15 625 610 115.8
B 4 232 34755 294.91 625 610 115.8
C 15 214 229240 1589.21 623 629 143.9
C 14 254 187271 1297.46 623 629 143.9
C 0 10 89668 618.96 623 629 143.9
D 12 227 1360713 9357.21 608 593 145.4
D 5 32 182534 1251.7 608 593 145.4
D 2 249 127875 875.66 608 593 145.4

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter