ASTROSAT CZTI

Data Quality Report

Orbit 36787

Creation date: 2024-06-27T21:31:40.297178
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_083T01_9000005242_36787cztM0_level2.evt modeM0/AS1A11_083T01_9000005242_36787cztM0_level2_quad_clean.evt
Size (bytes)714,107,52078,396,480
Size681.0 MB 74.8 MB
Events in quadrant A2,931,054568,221
Events in quadrant B11,596,338295,498
Events in quadrant C3,382,054558,789
Events in quadrant D3,314,647534,355

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124423
B0384742
C0136332
D0138462

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5948120.201748%
B5948361460.759919%
C5948601.008742%
D59481171.967048%

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 7291 5949 1 1 0.01% 0.02%
B 7291 5949 3266 3266 44.79% 54.90%
C 7291 5949 55 55 0.75% 0.92%
D 7291 5949 99 99 1.36% 1.66%

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 243044 1754.46 682 668 138.1
A 9 143 29009 205.15 682 668 138.1
A 13 254 9279 62.33 682 668 138.1
B 12 1 9553862 110591.81 444 431 86.4
B 4 171 65882 757.67 444 431 86.4
B 0 190 39287 449.8 444 431 86.4
C 0 207 297808 1947.61 657 660 152.6
C 15 214 271237 1773.46 657 660 152.6
C 14 254 175888 1148.51 657 660 152.6
D 13 249 308132 1890.45 660 641 162.7
D 2 250 107313 655.82 660 641 162.7
D 2 249 89013 543.31 660 641 162.7

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