ASTROSAT CZTI

Data Quality Report

Orbit 14861

Creation date: 2024-06-27T17:00:35.132565
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/AS1A04_218T01_9000002194_14861cztM0_level2.evt modeM0/AS1A04_218T01_9000002194_14861cztM0_level2_quad_clean.evt
Size (bytes)529,539,84064,391,040
Size505.0 MB 61.4 MB
Events in quadrant A3,259,881388,104
Events in quadrant B3,555,439384,677
Events in quadrant C3,330,102381,196
Events in quadrant D5,452,537343,817

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136322
B0145591
C0135001
D0203971

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6471590.911760%
B6471661.019935%
C6471420.649050%
D647193814.495441%

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 7592 6473 2 2 0.03% 0.03%
B 7592 6473 2 2 0.03% 0.03%
C 7592 6473 0 0 0.00% 0.00%
D 7592 6473 824 824 10.85% 12.73%

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 12 189 112073 685.14 813 798 162.4
A 9 143 12979 75.0 813 798 162.4
A 0 226 7123 38.94 813 798 162.4
B 0 219 113491 740.45 811 790 152.2
B 0 189 109698 715.53 811 790 152.2
B 3 64 36159 232.37 811 790 152.2
C 3 233 239886 1323.73 787 792 180.6
C 8 128 11717 60.48 787 792 180.6
C 13 61 5858 28.05 787 792 180.6
D 13 104 2219680 11577.06 743 727 191.7
D 9 1 239897 1247.83 743 727 191.7
D 10 70 63740 328.76 743 727 191.7

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