ASTROSAT CZTI

Data Quality Report

Orbit 32887

Creation date: 2024-06-27T20:43:07.434287
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/AS1A11_005T05_9000004744_32887cztM0_level2.evt modeM0/AS1A11_005T05_9000004744_32887cztM0_level2_quad_clean.evt
Size (bytes)440,118,72068,785,920
Size419.7 MB 65.6 MB
Events in quadrant A2,376,495448,050
Events in quadrant B3,162,521456,806
Events in quadrant C2,732,122450,707
Events in quadrant D4,724,099382,331

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281
B0280
C0282
D0290

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01003237
B01236421
C01113840
D017702112

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A491360.122125%
B49202344.756098%
C4920911.849593%
D491053410.875764%

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 6993 4930 0 0 0.00% 0.00%
B 6993 4931 140 140 2.00% 2.84%
C 6993 4929 76 76 1.09% 1.54%
D 6993 4928 423 423 6.05% 8.58%

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 13 254 8800 67.26 613 604 121.9
A 3 137 5420 39.52 613 604 121.9
A 0 226 5137 37.2 613 604 121.9
B 5 172 569775 5059.64 611 598 112.5
B 0 219 41260 361.46 611 598 112.5
B 15 85 41163 360.6 611 598 112.5
C 0 10 317276 2296.04 600 606 137.9
C 3 233 25846 183.0 600 606 137.9
C 15 159 21032 148.1 600 606 137.9
D 12 218 986558 6863.98 559 547 143.7
D 8 195 753768 5243.44 559 547 143.7
D 2 250 147813 1025.17 559 547 143.7

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