ASTROSAT CZTI

Data Quality Report

Orbit 44139

Creation date: 2024-06-27T22:59:39.560109
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_012T02_9000005950_44139cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44139cztM0_level2_quad_clean.evt
Size (bytes)462,634,560113,512,320
Size441.2 MB 108.3 MB
Events in quadrant A4,689,333760,234
Events in quadrant B3,359,695797,711
Events in quadrant C3,240,951763,226
Events in quadrant D5,334,431665,774

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185881
B0141721
C0139301
D0203301

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64482283.535980%
B64491071.659172%
C6449791.224996%
D64494697.272445%

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 7628 6449 66 66 0.87% 1.02%
B 7629 6450 15 15 0.20% 0.23%
C 7629 6450 21 21 0.28% 0.33%
D 7629 6450 339 339 4.44% 5.26%

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 1370169 8543.25 776 759 160.3
A 14 238 273643 1702.42 776 759 160.3
A 7 3 15821 93.97 776 759 160.3
B 5 172 107267 703.86 778 755 151.3
B 0 189 85729 561.53 778 755 151.3
B 5 235 21295 135.73 778 755 151.3
C 14 254 106281 583.94 774 780 180.7
C 14 96 85111 466.77 774 780 180.7
C 1 241 20224 107.62 774 780 180.7
D 1 47 1392757 7345.19 757 737 189.5
D 12 233 281282 1480.33 757 737 189.5
D 5 235 217200 1142.2 757 737 189.5

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