ASTROSAT CZTI

Data Quality Report

Orbit 42990

Creation date: 2024-06-27T22:46:37.566388
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/AS1T05_148T01_9000005838_42990cztM0_level2.fits modeM0/AS1T05_148T01_9000005838_42990cztM0_level2_quad_clean.evt
Size (bytes)1,268,101,440299,453,760
Size1.2 GB 285.6 MB
Events in quadrant A9,688,5132,186,651
Events in quadrant B15,780,0171,780,676
Events in quadrant C8,500,4012,140,019
Events in quadrant D11,732,6731,854,448

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390604
B0573504
C0341094
D0455964

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A160251821.135725%
B16026336220.978410%
C16026620.386871%
D160269145.703232%

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 21546 16029 144 144 0.67% 0.90%
B 21547 16030 2568 2568 11.92% 16.02%
C 21547 16030 49 49 0.23% 0.31%
D 21547 16030 823 823 3.82% 5.13%

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 1576825 3658.6 1948 1915 430.5
A 15 237 448786 1038.11 1948 1915 430.5
A 15 222 98702 224.84 1948 1915 430.5
B 4 81 7326682 19825.66 1785 1747 369.5
B 4 171 924667 2497.97 1785 1747 369.5
B 12 18 212346 570.01 1785 1747 369.5
C 15 214 649009 1355.34 1897 1914 477.4
C 5 250 411878 858.67 1897 1914 477.4
C 7 220 34409 68.06 1897 1914 477.4
D 1 47 2491458 5168.45 1838 1775 481.7
D 1 52 995495 2062.91 1838 1775 481.7
D 13 249 637445 1319.62 1838 1775 481.7

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