ASTROSAT CZTI

Data Quality Report

Orbit 38383

Creation date: 2024-06-27T21:51:51.416088
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/AS1A12_005T08_9000005380_38383cztM0_level2.fits modeM0/AS1A12_005T08_9000005380_38383cztM0_level2_quad_clean.evt
Size (bytes)1,165,230,720257,794,560
Size1.1 GB 245.9 MB
Events in quadrant A9,150,8231,747,290
Events in quadrant B7,944,5931,801,937
Events in quadrant C7,736,5131,743,267
Events in quadrant D17,071,5561,415,735

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0368175
B0341064
C0326644
D0618784

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03260
B03260
C03260
D03260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A159031480.930642%
B15903680.427592%
C15903350.220084%
D15903202712.746023%

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 21365 15907 114 114 0.53% 0.72%
B 21365 15907 25 25 0.12% 0.16%
C 21365 15907 15 15 0.07% 0.09%
D 21365 15906 1921 1921 8.99% 12.08%

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 1006519 2764.39 1807 1770 363.5
A 12 16 575560 1578.68 1807 1770 363.5
A 9 143 232270 634.18 1807 1770 363.5
B 0 183 392873 1124.73 1800 1748 347.8
B 0 189 100106 282.84 1800 1748 347.8
B 15 35 86072 242.48 1800 1748 347.8
C 15 214 671188 1626.0 1768 1782 411.7
C 14 254 103309 246.61 1768 1782 411.7
C 4 0 31777 72.86 1768 1782 411.7
D 10 203 6913464 16970.34 1663 1616 407.3
D 12 235 1456333 3571.7 1663 1616 407.3
D 1 20 675669 1654.97 1663 1616 407.3

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