ASTROSAT CZTI

Data Quality Report

Orbit 34065

Creation date: 2024-06-27T20:56:07.475691
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/AS1C07_001T04_9000004868_34065cztM0_level2.evt modeM0/AS1C07_001T04_9000004868_34065cztM0_level2_quad_clean.evt
Size (bytes)587,917,44087,693,120
Size560.7 MB 83.6 MB
Events in quadrant A4,962,866558,083
Events in quadrant B3,958,964579,904
Events in quadrant C3,353,313573,664
Events in quadrant D5,137,740538,272

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0186393
B0154182
C0132492
D0193872

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A579164711.172509%
B57913746.458297%
C5791761.312381%
D57913876.682784%

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 7134 5792 552 552 7.74% 9.53%
B 7133 5791 304 304 4.26% 5.25%
C 7134 5792 68 68 0.95% 1.17%
D 7134 5792 384 384 5.38% 6.63%

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 15 169 2474235 19279.14 639 626 128.3
A 10 83 15246 113.95 639 626 128.3
A 13 254 9925 72.48 639 626 128.3
B 5 172 718833 5765.87 651 636 124.6
B 5 31 183408 1467.34 651 636 124.6
B 5 15 166798 1333.99 651 636 124.6
C 15 214 254150 1708.64 643 647 148.4
C 0 207 236931 1592.59 643 647 148.4
C 0 10 220424 1481.33 643 647 148.4
D 8 195 574832 3655.35 635 616 157.1
D 2 249 570831 3629.88 635 616 157.1
D 1 52 500686 3183.35 635 616 157.1

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