ASTROSAT CZTI

Data Quality Report

Orbit 03902

Creation date: 2024-06-27T14:35:01.750233
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/AS1G05_083T02_9000000498_03902cztM0_level2.evt modeM0/AS1G05_083T02_9000000498_03902cztM0_level2_quad_clean.evt
Size (bytes)350,412,48053,392,320
Size334.2 MB 50.9 MB
Events in quadrant A2,397,307328,240
Events in quadrant B3,747,996309,151
Events in quadrant C2,046,514329,210
Events in quadrant D2,100,391319,672

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0103241
B0143251
C096051
D098541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46971042.214179%
B46974018.537364%
C4697551.170960%
D4697691.469023%

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 5127 4698 28 28 0.55% 0.60%
B 5126 4697 280 280 5.46% 5.96%
C 5126 4696 0 0 0.00% 0.00%
D 5127 4698 8 8 0.16% 0.17%

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 0 118 97118 871.37 534 521 110.9
A 13 251 63986 572.5 534 521 110.9
A 8 15 62966 563.3 534 521 110.9
B 10 16 869286 8418.58 526 514 103.2
B 15 204 309307 2992.27 526 514 103.2
B 7 221 229814 2221.96 526 514 103.2
C 13 61 4482 31.88 523 524 124.1
C 12 4 2645 17.08 523 524 124.1
C 10 34 2118 12.84 523 524 124.1
D 13 239 42243 329.99 518 502 126.5
D 5 32 20047 154.52 518 502 126.5
D 13 248 17282 132.66 518 502 126.5

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
Veto Counter