ASTROSAT CZTI

Data Quality Report

Orbit 46186

Creation date: 2024-06-27T23:20:07.892051
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_093T40_9000006182_46186cztM0_level2.fits modeM0/AS1A13_093T40_9000006182_46186cztM0_level2_quad_clean.evt
Size (bytes)534,407,040109,543,680
Size509.7 MB 104.5 MB
Events in quadrant A6,052,231738,109
Events in quadrant B4,382,422762,504
Events in quadrant C2,971,169725,906
Events in quadrant D5,872,561636,955

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222032
B0174421
C0135411
D0219241

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64992684.123711%
B65002003.076923%
C6500290.446154%
D65005137.892308%

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 7604 6499 60 60 0.79% 0.92%
B 7605 6501 78 78 1.03% 1.20%
C 7605 6501 7 7 0.09% 0.11%
D 7605 6501 488 488 6.42% 7.51%

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 3059899 20296.63 733 719 150.7
A 13 248 87180 573.64 733 719 150.7
A 9 191 58945 386.31 733 719 150.7
B 3 112 1131591 8038.89 734 713 140.7
B 5 172 247947 1757.47 734 713 140.7
B 5 32 46172 323.15 734 713 140.7
C 14 254 83604 498.49 715 717 166.3
C 12 2 54018 320.55 715 717 166.3
C 10 218 20044 116.23 715 717 166.3
D 1 52 1510350 8604.4 701 680 175.5
D 2 37 1027979 5855.12 701 680 175.5
D 5 222 163793 929.67 701 680 175.5

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