ASTROSAT CZTI

Data Quality Report

Orbit 45651

Creation date: 2024-06-27T23:14:35.719658
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_071T07_9000006116_45651cztM0_level2.fits modeM0/AS1A13_071T07_9000006116_45651cztM0_level2_quad_clean.evt
Size (bytes)595,872,000108,403,200
Size568.3 MB 103.4 MB
Events in quadrant A6,193,960742,331
Events in quadrant B4,392,071736,715
Events in quadrant C3,819,166740,711
Events in quadrant D7,115,222580,150

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231282
B0176441
C0161861
D0258261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69223154.550708%
B69234836.976744%
C69231542.224469%
D6923129218.662430%

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 7482 6923 35 35 0.47% 0.51%
B 7483 6924 247 247 3.30% 3.57%
C 7483 6924 88 88 1.18% 1.27%
D 7483 6924 1090 1090 14.57% 15.74%

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 3001774 18906.74 766 751 158.7
A 13 248 101866 637.03 766 751 158.7
A 0 243 38351 236.88 766 751 158.7
B 3 112 504840 3427.82 753 730 147.1
B 12 18 250174 1696.15 753 730 147.1
B 5 172 214087 1450.77 753 730 147.1
C 14 254 623525 3549.22 753 757 175.5
C 9 54 169428 961.27 753 757 175.5
C 12 2 22513 123.99 753 757 175.5
D 8 129 3385570 19779.86 680 658 171.1
D 1 52 467194 2726.22 680 658 171.1
D 11 241 187508 1091.86 680 658 171.1

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