ASTROSAT CZTI

Data Quality Report

Orbit 41346

Creation date: 2024-06-27T22:27:56.799844
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_105T01_9000005658_41346cztM0_level2.fits modeM0/AS1T05_105T01_9000005658_41346cztM0_level2_quad_clean.evt
Size (bytes)331,905,60078,503,040
Size316.5 MB 74.9 MB
Events in quadrant A2,579,018545,403
Events in quadrant B2,505,778542,358
Events in quadrant C3,352,266496,205
Events in quadrant D3,479,473460,791

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01025
B01024
C01038
D01015

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011036558
B011496835
C013935919
D014444680

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4757110.231238%
B47351372.893347%
C47142385.048791%
D47372805.910914%

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 7147 4917 4 4 0.06% 0.08%
B 7150 4890 130 130 1.82% 2.66%
C 7143 4878 229 229 3.21% 4.69%
D 7158 4916 280 280 3.91% 5.70%

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 470958 4268.93 531 521 110.2
A 13 248 28854 257.1 531 521 110.2
A 12 189 20098 177.65 531 521 110.2
B 15 35 319690 3165.24 516 502 100.8
B 0 190 63419 623.92 516 502 100.8
B 5 255 59256 582.64 516 502 100.8
C 7 220 617502 5372.41 489 492 114.8
C 0 10 608050 5290.11 489 492 114.8
C 15 214 197212 1712.87 489 492 114.8
D 13 249 900645 7223.91 499 484 124.6
D 1 47 312029 2500.19 499 484 124.6
D 5 222 163536 1308.51 499 484 124.6

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