ASTROSAT CZTI

Data Quality Report

Orbit 47887

Creation date: 2024-08-05T20:08:10.216165
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_053T01_9000006370_47887cztM0_level2.fits modeM0/AS1A13_053T01_9000006370_47887cztM0_level2_quad_clean.evt
Size (bytes)585,722,880121,144,320
Size558.6 MB 115.5 MB
Events in quadrant A7,614,348791,008
Events in quadrant B3,492,527820,272
Events in quadrant C3,596,427807,447
Events in quadrant D6,380,333712,187

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285990
B0160360
C0165290
D0242910

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77182653.433532%
B77181231.593677%
C7718590.764447%
D77184906.348795%

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 7718 7718 12 12 0.16% 0.16%
B 7718 7718 0 0 0.00% 0.00%
C 7718 7718 46 46 0.60% 0.60%
D 7718 7718 421 421 5.45% 5.45%

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 4196015 23397.51 853 831 179.3
A 13 248 64363 354.33 853 831 179.3
A 7 3 51268 281.3 853 831 179.3
B 7 221 46009 267.72 850 824 168.8
B 0 197 26513 152.21 850 824 168.8
B 4 21 25085 143.75 850 824 168.8
C 12 2 149953 747.44 844 848 199.5
C 14 254 129741 646.12 844 848 199.5
C 15 208 22386 107.97 844 848 199.5
D 2 37 1824715 8774.97 833 806 207.9
D 12 2 509209 2445.97 833 806 207.9
D 2 165 225844 1082.68 833 806 207.9

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