ASTROSAT CZTI

Data Quality Report

Orbit 03777

Creation date: 2024-06-27T14:33:32.302384
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_03777cztM0_level2.evt modeM0/AS1G05_248T01_9000000486_03777cztM0_level2_quad_clean.evt
Size (bytes)537,215,04064,313,280
Size512.3 MB 61.3 MB
Events in quadrant A3,838,936386,681
Events in quadrant B3,521,357392,547
Events in quadrant C3,054,585382,720
Events in quadrant D5,426,763344,503

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153323
B0142052
C0131712
D0203112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63072323.678453%
B63071241.966069%
C6307711.125733%
D63076209.830347%

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 7567 6307 108 108 1.43% 1.71%
B 7567 6307 7 7 0.09% 0.11%
C 7567 6307 2 2 0.03% 0.03%
D 7567 6307 592 592 7.82% 9.39%

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 351457 2160.39 795 779 162.3
A 0 50 207728 1274.93 795 779 162.3
A 13 251 145140 889.35 795 779 162.3
B 15 204 185749 1198.14 810 792 154.4
B 4 81 92497 594.06 810 792 154.4
B 15 54 24204 151.66 810 792 154.4
C 2 53 57192 317.42 765 770 177.8
C 13 61 6310 31.17 765 770 177.8
C 14 159 4063 18.53 765 770 177.8
D 1 84 1531256 8671.99 735 714 176.5
D 8 112 593319 3357.68 735 714 176.5
D 13 137 241310 1363.21 735 714 176.5

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
Veto Counter