ASTROSAT CZTI

Data Quality Report

Orbit 43091

Creation date: 2024-06-27T22:47:53.638517
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/AS1T05_152T01_9000005846_43091cztM0_level2.fits modeM0/AS1T05_152T01_9000005846_43091cztM0_level2_quad_clean.evt
Size (bytes)940,694,400252,797,760
Size897.1 MB 241.1 MB
Events in quadrant A9,015,5791,684,615
Events in quadrant B8,156,7981,708,676
Events in quadrant C7,232,5561,670,078
Events in quadrant D9,194,0591,502,824

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0370864
B0352724
C0320944
D0393664

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03220
B03220
C03220
D03220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A157722001.268070%
B157731831.160210%
C15773270.171179%
D157735413.429912%

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 21265 15776 114 114 0.54% 0.72%
B 21266 15777 90 90 0.42% 0.57%
C 21266 15777 10 10 0.05% 0.06%
D 21266 15777 432 432 2.03% 2.74%

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 1529363 4457.97 1682 1644 342.7
A 15 237 635436 1849.44 1682 1644 342.7
A 12 189 266395 772.56 1682 1644 342.7
B 5 255 426645 1328.4 1667 1619 320.0
B 0 189 388721 1209.87 1667 1619 320.0
B 0 229 375445 1168.37 1667 1619 320.0
C 15 214 648814 1703.77 1646 1653 379.8
C 14 254 99615 257.9 1646 1653 379.8
C 0 207 35550 89.24 1646 1653 379.8
D 12 218 797402 2034.37 1623 1574 391.2
D 13 249 628379 1602.29 1623 1574 391.2
D 5 32 624863 1593.31 1623 1574 391.2

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