ASTROSAT CZTI

Data Quality Report

Orbit 17194

Creation date: 2024-06-27T17:33:25.181438
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/AS1A05_185T04_9000002548_17194cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17194cztM0_level2_quad_clean.evt
Size (bytes)491,538,24095,653,440
Size468.8 MB 91.2 MB
Events in quadrant A3,138,699639,330
Events in quadrant B3,224,036639,445
Events in quadrant C4,514,220593,429
Events in quadrant D3,581,699584,818

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133921
B0135381
C0178651
D0149571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301490.777654%
B6301440.698302%
C63011071.698143%
D63012293.634344%

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 7591 6302 0 0 0.00% 0.00%
B 7591 6302 0 0 0.00% 0.00%
C 7591 6302 2 2 0.03% 0.03%
D 7591 6302 148 148 1.95% 2.35%

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 48394 295.76 804 790 161.0
A 0 226 7117 39.31 804 790 161.0
A 12 194 5904 31.77 804 790 161.0
B 0 197 28252 182.85 800 780 150.2
B 0 229 27080 175.05 800 780 150.2
B 0 219 19174 122.43 800 780 150.2
C 3 233 1408325 7952.58 765 772 177.0
C 14 238 117364 658.74 765 772 177.0
C 13 61 5539 26.93 765 772 177.0
D 5 222 549264 2961.85 772 753 185.2
D 10 70 43384 230.2 772 753 185.2
D 2 234 27480 144.32 772 753 185.2

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