ASTROSAT CZTI

Data Quality Report

Orbit 05335

Creation date: 2024-06-27T14:54:00.324344
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_240T01_9000000674_05335cztM0_level2.evt modeM0/AS1G05_240T01_9000000674_05335cztM0_level2_quad_clean.evt
Size (bytes)1,208,560,320180,095,040
Size1.1 GB 171.8 MB
Events in quadrant A8,205,9891,065,621
Events in quadrant B8,801,7921,093,805
Events in quadrant C9,806,5631,051,866
Events in quadrant D8,589,9381,023,668

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0385781457
B0395651580
C0430132074
D0398071526

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A037214
B037210
C037222
D037212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A176944152.345428%
B176934402.486859%
C175852501.421666%
D177273642.053365%

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 19158 18331 72 72 0.38% 0.39%
B 19158 18309 58 58 0.30% 0.32%
C 19158 18287 0 0 0.00% 0.00%
D 19158 18321 97 97 0.51% 0.53%

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 50 282240 660.62 2053 2005 424.2
A 12 194 20537 43.69 2053 2005 424.2
A 0 226 19745 41.82 2053 2005 424.2
B 10 16 347585 855.14 2078 2022 404.1
B 4 80 151946 371.01 2078 2022 404.1
B 15 204 74301 178.86 2078 2022 404.1
C 1 16 2000543 4329.62 1989 1996 461.6
C 14 67 25415 50.73 1989 1996 461.6
C 13 61 16149 30.66 1989 1996 461.6
D 4 95 228532 462.46 2005 1938 490.0
D 2 234 177466 358.24 2005 1938 490.0
D 2 14 117128 235.09 2005 1938 490.0

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