ASTROSAT CZTI

Data Quality Report

Orbit 30854

Creation date: 2024-06-27T20:20:24.606778
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/AS1A10_071T46_9000004460_30854cztM0_level2.evt modeM0/AS1A10_071T46_9000004460_30854cztM0_level2_quad_clean.evt
Size (bytes)500,382,72057,513,600
Size477.2 MB 54.8 MB
Events in quadrant A2,319,958361,890
Events in quadrant B6,895,207340,750
Events in quadrant C2,728,249343,970
Events in quadrant D2,871,277343,281

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102130
B0240790
C0113630
D0114930

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5010691.377246%
B501092618.483034%
C50101573.133733%
D5010641.277445%

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 5009 5009 0 0 0.00% 0.00%
B 5009 5009 324 324 6.47% 6.47%
C 5009 5009 41 41 0.82% 0.82%
D 5009 5009 14 14 0.28% 0.28%

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 13 254 9262 70.54 600 588 123.0
A 3 137 6158 45.3 600 588 123.0
A 0 226 4924 35.26 600 588 123.0
B 6 36 3200211 28703.92 570 556 111.5
B 6 159 1403974 12589.98 570 556 111.5
B 4 80 22239 194.52 570 556 111.5
C 2 16 322926 2356.21 572 576 136.8
C 14 238 91704 666.1 572 576 136.8
C 0 10 59490 430.63 572 576 136.8
D 8 195 564933 4082.1 578 565 138.3
D 2 250 59451 425.93 578 565 138.3
D 2 234 21625 152.33 578 565 138.3

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