ASTROSAT CZTI

Data Quality Report

Orbit 44658

Creation date: 2024-06-27T23:05:00.371674
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/AS1A13_072T01_9000006008_44658cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44658cztM0_level2_quad_clean.evt
Size (bytes)418,682,88096,577,920
Size399.3 MB 92.1 MB
Events in quadrant A5,333,988618,819
Events in quadrant B2,945,320669,901
Events in quadrant C2,898,341634,757
Events in quadrant D3,849,181577,518

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208613
B0131711
C0130451
D0158371

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60624156.845925%
B6063731.204024%
C6063851.401946%
D60631943.199736%

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 7062 6063 248 248 3.51% 4.09%
B 7063 6064 38 38 0.54% 0.63%
C 7063 6064 49 49 0.69% 0.81%
D 7063 6064 164 164 2.32% 2.70%

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 1653054 12409.88 642 628 133.2
A 15 223 666347 4999.61 642 628 133.2
A 13 248 454374 3407.68 642 628 133.2
B 0 189 86979 662.13 660 641 130.4
B 0 219 66876 507.96 660 641 130.4
B 0 186 66522 505.25 660 641 130.4
C 14 254 222206 1458.74 648 653 151.9
C 12 2 78742 514.15 648 653 151.9
C 3 233 29153 187.65 648 653 151.9
D 13 249 593446 3674.56 643 624 161.3
D 1 52 370725 2294.04 643 624 161.3
D 5 222 147368 909.58 643 624 161.3

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