ASTROSAT CZTI

Data Quality Report

Orbit 03893

Creation date: 2024-06-27T14:34:53.764906
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_239T02_9000000496_03893cztM0_level2.evt modeM0/AS1G05_239T02_9000000496_03893cztM0_level2_quad_clean.evt
Size (bytes)529,971,84054,383,040
Size505.4 MB 51.9 MB
Events in quadrant A4,333,331300,292
Events in quadrant B4,017,269307,145
Events in quadrant C3,510,270300,158
Events in quadrant D3,747,625284,077

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170863
B0161562
C0146302
D0154252

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65182644.050322%
B65181091.672292%
C65181091.672292%
D65181912.930347%

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 7843 6518 150 150 1.91% 2.30%
B 7843 6518 9 9 0.11% 0.14%
C 7843 6518 57 57 0.73% 0.87%
D 7843 6518 145 145 1.85% 2.22%

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 13 251 690970 4155.78 821 807 166.1
A 8 15 250207 1501.75 821 807 166.1
A 0 118 110649 661.41 821 807 166.1
B 7 221 427622 2675.6 841 822 159.5
B 15 204 303664 1898.51 841 822 159.5
B 4 81 13906 82.02 841 822 159.5
C 2 53 190663 1030.88 790 795 184.2
C 7 222 130829 706.01 790 795 184.2
C 10 65 78763 423.32 790 795 184.2
D 13 239 352324 1895.98 779 759 185.4
D 1 20 171090 918.59 779 759 185.4
D 2 63 59483 316.7 779 759 185.4

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
Veto Counter