ASTROSAT CZTI

Data Quality Report

Orbit 38857

Creation date: 2024-06-27T21:57:20.007776
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_077T06_9000005408_38857cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38857cztM0_level2_quad_clean.evt
Size (bytes)332,184,96095,909,760
Size316.8 MB 91.5 MB
Events in quadrant A2,888,495645,970
Events in quadrant B2,584,593661,600
Events in quadrant C2,707,689627,941
Events in quadrant D3,665,166563,962

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120743
B0117712
C0117642
D0150872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A578150.086490%
B5781190.328663%
C5781110.190278%
D57812063.563397%

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 7242 5782 4 4 0.06% 0.07%
B 7242 5782 5 5 0.07% 0.09%
C 7242 5782 5 5 0.07% 0.09%
D 7242 5782 152 152 2.10% 2.63%

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 422817 3239.83 636 622 130.3
A 13 254 9532 68.37 636 622 130.3
A 3 137 7005 48.98 636 622 130.3
B 4 171 41486 336.66 631 613 121.4
B 5 172 30334 244.8 631 613 121.4
B 12 111 15507 122.68 631 613 121.4
C 15 214 241362 1657.37 620 624 145.3
C 14 254 31874 215.14 620 624 145.3
C 0 10 14294 94.11 620 624 145.3
D 2 250 435164 2952.39 607 591 147.2
D 12 227 349581 2370.96 607 591 147.2
D 13 249 136803 925.39 607 591 147.2

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