ASTROSAT CZTI

Data Quality Report

Orbit 45056

Creation date: 2024-06-27T23:09:27.571991
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_020T01_9000006040_45056cztM0_level2.fits modeM0/AS1A13_020T01_9000006040_45056cztM0_level2_quad_clean.evt
Size (bytes)583,600,320102,182,400
Size556.6 MB 97.4 MB
Events in quadrant A5,371,896684,668
Events in quadrant B3,555,956707,474
Events in quadrant C2,981,330697,827
Events in quadrant D9,199,064557,752

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203681
B0146911
C0133872
D0318511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63863205.010961%
B63872614.086426%
C63861282.004385%
D6386122319.151268%

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 7226 6387 31 31 0.43% 0.49%
B 7227 6387 32 32 0.44% 0.50%
C 7226 6387 5 5 0.07% 0.08%
D 7226 6387 1075 1075 14.88% 16.83%

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 2267201 14386.92 749 733 157.5
A 13 248 130113 821.27 749 733 157.5
A 15 174 30762 190.62 749 733 157.5
B 4 171 242525 1611.39 749 725 150.1
B 0 183 118404 784.23 749 725 150.1
B 15 36 81003 534.98 749 725 150.1
C 1 3 47769 267.59 744 749 175.7
C 3 233 9250 48.38 744 749 175.7
C 12 2 8180 42.29 744 749 175.7
D 11 241 3444046 19144.63 711 689 179.9
D 13 174 1051250 5840.99 711 689 179.9
D 13 249 561695 3119.12 711 689 179.9

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