ASTROSAT CZTI

Data Quality Report

Orbit 38461

Creation date: 2024-06-27T21:53:04.071384
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_38461cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38461cztM0_level2_quad_clean.evt
Size (bytes)384,647,04088,712,640
Size366.8 MB 84.6 MB
Events in quadrant A2,689,658631,561
Events in quadrant B3,282,164613,628
Events in quadrant C2,391,057590,192
Events in quadrant D5,498,526510,537

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108742
B0128471
C099251
D0196871

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4848120.247525%
B48482024.166667%
C484850.103135%
D484859112.190594%

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 6881 4849 6 6 0.09% 0.12%
B 6881 4849 162 162 2.35% 3.34%
C 6881 4849 2 2 0.03% 0.04%
D 6881 4849 565 565 8.21% 11.65%

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 332950 2916.85 574 564 114.0
A 12 16 71709 624.33 574 564 114.0
A 9 143 27567 236.96 574 564 114.0
B 5 184 891029 8577.85 558 545 103.8
B 0 183 61813 590.18 558 545 103.8
B 15 201 44026 418.84 558 545 103.8
C 15 214 202796 1610.23 548 550 125.6
C 14 254 34313 268.81 548 550 125.6
C 0 10 16666 128.31 548 550 125.6
D 12 235 1532481 11852.22 539 523 129.3
D 12 227 1265040 9783.13 539 523 129.3
D 13 249 197203 1521.64 539 523 129.3

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