ASTROSAT CZTI

Data Quality Report

Orbit 16759

Creation date: 2024-06-27T17:27:31.978625
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/AS1T03_015T01_9000002486_16759cztM0_level2.evt modeM0/AS1T03_015T01_9000002486_16759cztM0_level2_quad_clean.evt
Size (bytes)619,516,800127,344,960
Size590.8 MB 121.4 MB
Events in quadrant A3,777,242899,228
Events in quadrant B3,397,926900,700
Events in quadrant C3,468,888858,461
Events in quadrant D7,685,871752,543

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152843
B0140922
C0142192
D0272042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63841342.098997%
B6384861.347118%
C6384881.378446%
D6384140922.070802%

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 7585 6386 60 60 0.79% 0.94%
B 7585 6386 16 16 0.21% 0.25%
C 7585 6386 4 4 0.05% 0.06%
D 7585 6385 992 992 13.08% 15.54%

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 14 4 657019 4142.62 806 788 158.4
A 15 174 20437 124.04 806 788 158.4
A 0 226 7285 41.01 806 788 158.4
B 15 35 107604 725.45 793 775 147.3
B 5 236 57712 386.64 793 775 147.3
B 0 189 51992 347.8 793 775 147.3
C 3 233 232912 1334.38 756 762 174.0
C 0 207 158502 906.67 756 762 174.0
C 14 238 119166 680.57 756 762 174.0
D 1 52 4007760 23366.6 710 689 171.5
D 12 110 319510 1859.15 710 689 171.5
D 13 232 242857 1412.16 710 689 171.5

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