ASTROSAT CZTI

Data Quality Report

Orbit 25912

Creation date: 2024-06-27T19:22:44.065636
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/AS1A07_068T01_9000003756_25912cztM0_level2.evt modeM0/AS1A07_068T01_9000003756_25912cztM0_level2_quad_clean.evt
Size (bytes)825,998,40088,634,880
Size787.7 MB 84.5 MB
Events in quadrant A13,211,508428,345
Events in quadrant B3,194,975631,061
Events in quadrant C3,173,846591,378
Events in quadrant D4,999,125581,678

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0436860
B0135410
C0135760
D0192300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6458431466.800867%
B6458450.696810%
C6458771.192320%
D64582944.552493%

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 7498 6459 3661 3661 48.83% 56.68%
B 7498 6459 1 1 0.01% 0.02%
C 7498 6459 0 0 0.00% 0.00%
D 7498 6459 264 264 3.52% 4.09%

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 0 13 10887068 90468.36 598 587 120.3
A 8 192 9360 72.91 598 587 120.3
A 12 16 8010 61.69 598 587 120.3
B 12 111 18539 115.62 807 788 153.5
B 11 111 16449 102.0 807 788 153.5
B 14 111 14895 91.88 807 788 153.5
C 14 238 126580 701.14 767 774 179.4
C 3 233 54856 301.41 767 774 179.4
C 2 16 6129 29.84 767 774 179.4
D 1 52 1326623 7224.87 768 750 183.5
D 7 80 738213 4018.54 768 750 183.5
D 2 234 24596 129.94 768 750 183.5

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