ASTROSAT CZTI

Data Quality Report

Orbit 18377

Creation date: 2024-06-27T17:49:01.890307
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/AS1A06_006T01_9000002724_18377cztM0_level2.evt modeM0/AS1A06_006T01_9000002724_18377cztM0_level2_quad_clean.evt
Size (bytes)488,574,72087,079,680
Size465.9 MB 83.0 MB
Events in quadrant A3,232,201554,342
Events in quadrant B3,345,623559,624
Events in quadrant C3,122,110545,774
Events in quadrant D4,651,261519,863

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139551
B0141421
C0135951
D0182291

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6562280.426699%
B6563560.853268%
C6563590.898979%
D65623054.647973%

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 7497 6563 11 11 0.15% 0.17%
B 7498 6564 17 17 0.23% 0.26%
C 7498 6564 6 6 0.08% 0.09%
D 7497 6563 241 241 3.21% 3.67%

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 15 174 167257 1044.18 783 767 159.4
A 4 2 48738 300.86 783 767 159.4
A 0 226 6933 38.67 783 767 159.4
B 3 64 71361 466.34 786 766 151.4
B 0 189 62581 408.34 786 766 151.4
B 0 197 37011 239.43 786 766 151.4
C 14 238 113931 638.62 750 755 177.2
C 0 207 76805 429.13 750 755 177.2
C 3 233 7226 36.51 750 755 177.2
D 1 52 1309944 7150.79 746 723 183.1
D 7 38 125892 683.66 746 723 183.1
D 7 238 125157 679.64 746 723 183.1

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