ASTROSAT CZTI

Data Quality Report

Orbit 38499

Creation date: 2024-06-27T21:53:34.758145
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_018T01_9000005386_38499cztM0_level2.fits modeM0/AS1A12_018T01_9000005386_38499cztM0_level2_quad_clean.evt
Size (bytes)1,102,374,720249,177,600
Size1.0 GB 237.6 MB
Events in quadrant A9,378,1581,713,965
Events in quadrant B8,500,8781,734,088
Events in quadrant C7,536,7981,674,904
Events in quadrant D14,182,7361,344,801

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03180
B03180
C03180
D03180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0470
B0470
C0470
D0480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0379865
B0355964
C0321714
D0531774

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A156021360.871683%
B156022741.756185%
C15602210.134598%
D15602221814.216126%

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 19784 15605 115 115 0.58% 0.74%
B 19784 15605 170 170 0.86% 1.09%
C 19784 15605 12 12 0.06% 0.08%
D 19784 15604 2010 2010 10.16% 12.88%

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 15 222 1332716 3777.37 1738 1698 352.4
A 10 83 996910 2824.36 1738 1698 352.4
A 12 189 108905 304.25 1738 1698 352.4
B 8 3 631022 1914.3 1722 1675 328.8
B 4 171 287144 868.32 1722 1675 328.8
B 5 184 164403 494.97 1722 1675 328.8
C 15 214 641659 1622.37 1693 1700 394.5
C 3 233 118180 295.29 1693 1700 394.5
C 14 254 73804 182.79 1693 1700 394.5
D 12 227 4127396 10781.33 1583 1538 382.7
D 13 249 1704877 4451.02 1583 1538 382.7
D 2 250 807698 2106.59 1583 1538 382.7

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