ASTROSAT CZTI

Data Quality Report

Orbit 47336

Creation date: 2024-06-29T18:33:44.120719
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_037T01_9000006318_47336cztM0_level2.fits modeM0/AS1A13_037T01_9000006318_47336cztM0_level2_quad_clean.evt
Size (bytes)803,767,680117,679,680
Size766.5 MB 112.2 MB
Events in quadrant A14,383,073651,438
Events in quadrant B3,643,950849,493
Events in quadrant C4,017,478788,551
Events in quadrant D7,097,891723,671

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0481901
B0164410
C0176800
D0267380

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7901262633.236299%
B79011692.138970%
C79022142.708175%
D79023244.100228%

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 7901 7901 2365 2365 29.93% 29.93%
B 7901 7901 6 6 0.08% 0.08%
C 7902 7902 116 116 1.47% 1.47%
D 7902 7902 159 159 2.01% 2.01%

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 15 235 7249972 41237.74 835 815 175.8
A 10 83 3556510 20227.02 835 815 175.8
A 9 191 292563 1659.65 835 815 175.8
B 4 171 54711 303.78 885 855 177.3
B 5 172 25759 140.47 885 855 177.3
B 12 111 23475 127.59 885 855 177.3
C 0 207 625557 3078.8 855 859 202.9
C 3 233 26083 124.32 855 859 202.9
C 12 249 23696 112.55 855 859 202.9
D 6 112 2855117 13298.22 859 835 214.6
D 10 204 706861 3289.41 859 835 214.6
D 12 2 164907 764.42 859 835 214.6

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