ASTROSAT CZTI

Data Quality Report

Orbit 00824

Creation date: 2024-06-27T14:03:28.095245
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/AS1P01_010T01_9000000112_00824cztM0_level2.evt modeM0/AS1P01_010T01_9000000112_00824cztM0_level2_quad_clean.evt
Size (bytes)982,480,32095,932,800
Size937.0 MB 91.5 MB
Events in quadrant A7,214,613638,634
Events in quadrant B8,110,707635,045
Events in quadrant C6,648,134619,847
Events in quadrant D7,384,387594,005

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0257210
B0283460
C0239860
D0262180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5984691.153075%
B59841853.091578%
C598410.016711%
D59831752.924954%

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 7269 5985 303 303 4.17% 5.06%
B 7269 5985 584 584 8.03% 9.76%
C 7269 5985 95 95 1.31% 1.59%
D 7268 5984 373 373 5.13% 6.23%

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 15 171 311583 721.43 1791 1805 429.4
A 15 233 20091 42.59 1791 1805 429.4
A 7 16 8003 14.43 1791 1805 429.4
B 7 221 527474 1225.1 1858 1867 429.0
B 0 153 275811 638.52 1858 1867 429.0
B 0 220 145679 335.2 1858 1867 429.0
C 15 241 41975 87.34 1675 1726 460.8
C 3 111 31640 64.91 1675 1726 460.8
C 3 79 24972 50.44 1675 1726 460.8
D 13 200 830543 1677.97 1596 1654 494.0
D 1 4 398150 802.65 1596 1654 494.0
D 13 169 88579 175.97 1596 1654 494.0

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