ASTROSAT CZTI

Data Quality Report

Orbit 21529

Creation date: 2024-06-27T18:29:02.396576
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/AS1A05_144T02_9000003176_21529cztM0_level2.evt modeM0/AS1A05_144T02_9000003176_21529cztM0_level2_quad_clean.evt
Size (bytes)593,519,04081,339,840
Size566.0 MB 77.6 MB
Events in quadrant A3,296,835495,445
Events in quadrant B3,452,409499,413
Events in quadrant C5,386,221489,840
Events in quadrant D5,356,205482,170

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144951
B0147981
C0207234
D0206831

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7121510.716192%
B7121741.039180%
C71204586.432584%
D712076310.716292%

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 7451 7122 0 0 0.00% 0.00%
B 7451 7122 3 3 0.04% 0.04%
C 7450 7121 155 155 2.08% 2.18%
D 7450 7121 605 605 8.12% 8.50%

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 13 254 12118 65.26 854 835 172.9
A 0 226 7463 38.34 854 835 172.9
A 3 137 7134 36.44 854 835 172.9
B 0 190 52731 324.17 845 824 160.1
B 0 230 34780 212.07 845 824 160.1
B 3 64 24694 149.08 845 824 160.1
C 3 233 2003074 10694.97 806 811 187.2
C 14 238 126483 671.27 806 811 187.2
C 10 91 95833 507.55 806 811 187.2
D 7 38 1517811 7880.67 790 769 192.5
D 1 52 293887 1522.68 790 769 192.5
D 14 35 293726 1521.84 790 769 192.5

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter