ASTROSAT CZTI

Data Quality Report

Orbit 03678

Creation date: 2024-06-27T14:32:23.226713
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_201T01_9000000478_03678cztM0_level2.evt modeM0/AS1G05_201T01_9000000478_03678cztM0_level2_quad_clean.evt
Size (bytes)456,995,52077,201,280
Size435.8 MB 73.6 MB
Events in quadrant A3,581,372478,468
Events in quadrant B4,048,171476,439
Events in quadrant C2,837,827476,264
Events in quadrant D2,943,996466,148

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0148942
B0162841
C0129021
D0133771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63021973.125992%
B63021382.189781%
C6302811.285306%
D63021191.888289%

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 7357 6303 72 72 0.98% 1.14%
B 7357 6303 28 28 0.38% 0.44%
C 7357 6303 0 0 0.00% 0.00%
D 7357 6302 22 22 0.30% 0.35%

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 425850 2801.2 736 721 151.8
A 13 251 165306 1084.46 736 721 151.8
A 0 226 49320 320.22 736 721 151.8
B 15 204 398558 2800.27 741 721 142.1
B 3 0 364415 2559.95 741 721 142.1
B 5 172 185474 1300.43 741 721 142.1
C 1 16 9456 51.51 720 723 169.5
C 13 61 6015 31.21 720 723 169.5
C 12 4 5281 26.88 720 723 169.5
D 13 223 89788 512.71 722 699 173.8
D 14 34 50652 287.48 722 699 173.8
D 8 195 29860 167.82 722 699 173.8

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