ASTROSAT CZTI

Data Quality Report

Orbit 38480

Creation date: 2024-06-27T21:53:20.107900
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/AS1A12_018T01_9000005386_38480cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38480cztM0_level2_quad_clean.evt
Size (bytes)372,415,68089,504,640
Size355.2 MB 85.4 MB
Events in quadrant A2,890,931613,585
Events in quadrant B3,175,241615,757
Events in quadrant C2,523,773591,114
Events in quadrant D4,777,412512,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119993
B0130092
C0108922
D0179862

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5375250.465116%
B5375831.544186%
C5375120.223256%
D53754628.595349%

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 6957 5376 15 15 0.22% 0.28%
B 6957 5376 66 66 0.95% 1.23%
C 6957 5376 8 8 0.11% 0.15%
D 6957 5375 420 420 6.04% 7.81%

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 407140 3368.99 592 581 120.7
A 15 222 56736 465.33 592 581 120.7
A 0 8 46455 380.14 592 581 120.7
B 0 183 304855 2698.92 587 571 112.7
B 5 184 176481 1560.28 587 571 112.7
B 4 171 97311 858.06 587 571 112.7
C 15 214 224050 1654.9 579 581 135.0
C 0 10 32614 237.22 579 581 135.0
C 13 61 3886 24.48 579 581 135.0
D 12 227 817035 5989.66 562 546 136.3
D 2 16 604502 4430.55 562 546 136.3
D 10 118 386855 2833.92 562 546 136.3

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