ASTROSAT CZTI

Data Quality Report

Orbit 44159

Creation date: 2024-06-27T22:59:55.353193
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_080T06_9000005954_44159cztM0_level2.fits modeM0/AS1A13_080T06_9000005954_44159cztM0_level2_quad_clean.evt
Size (bytes)669,628,800115,539,840
Size638.6 MB 110.2 MB
Events in quadrant A7,712,734718,132
Events in quadrant B6,023,525805,140
Events in quadrant C4,876,750730,855
Events in quadrant D5,572,600704,092

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0285071
B0233840
C0204080
D0220260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7759120115.478799%
B77606167.938144%
C77607369.484536%
D77603684.742268%

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 7759 7759 811 811 10.45% 10.45%
B 7760 7760 318 318 4.10% 4.10%
C 7760 7760 384 384 4.95% 4.95%
D 7760 7760 328 328 4.23% 4.23%

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 15 223 2673522 16071.33 798 780 166.3
A 10 83 1414578 8501.24 798 780 166.3
A 14 238 426851 2561.99 798 780 166.3
B 0 219 1109438 6816.77 833 806 162.6
B 5 172 797972 4901.63 833 806 162.6
B 5 235 188830 1156.12 833 806 162.6
C 15 158 1467122 7907.89 795 795 185.4
C 14 254 278459 1497.44 795 795 185.4
C 4 254 15785 80.84 795 795 185.4
D 12 233 432241 2102.04 815 787 205.3
D 8 48 363239 1765.86 815 787 205.3
D 13 187 337764 1641.75 815 787 205.3

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