ASTROSAT CZTI

Data Quality Report

Orbit 26425

Creation date: 2024-06-27T19:28:51.819724
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/AS1A09_127T03_9000003820_26425cztM0_level2.evt modeM0/AS1A09_127T03_9000003820_26425cztM0_level2_quad_clean.evt
Size (bytes)1,123,712,640213,272,640
Size1.0 GB 203.4 MB
Events in quadrant A7,033,8631,392,064
Events in quadrant B7,815,5051,398,352
Events in quadrant C8,424,3871,328,976
Events in quadrant D9,743,4191,304,120

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306710
B0326170
C0341360
D0389240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A150071561.039515%
B150072721.812488%
C150083292.192164%
D150084993.324893%

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 17042 15007 9 9 0.05% 0.06%
B 17042 15009 95 95 0.56% 0.63%
C 17043 15010 60 60 0.35% 0.40%
D 17043 15009 320 320 1.88% 2.13%

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 12 189 38349 100.88 1804 1762 362.7
A 6 16 35151 92.06 1804 1762 362.7
A 13 254 25515 65.49 1804 1762 362.7
B 0 189 346008 1013.47 1792 1743 339.7
B 0 244 179046 521.95 1792 1743 339.7
B 5 172 123316 357.89 1792 1743 339.7
C 3 233 827810 2047.95 1726 1737 403.4
C 2 16 316965 781.49 1726 1737 403.4
C 14 238 272012 670.05 1726 1737 403.4
D 1 52 1857080 4453.2 1739 1697 416.6
D 12 227 369914 883.78 1739 1697 416.6
D 7 80 366040 874.48 1739 1697 416.6

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