ASTROSAT CZTI

Data Quality Report

Orbit 50661

Creation date: 2025-02-08T19:08:21.227377
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_241T01_9000006446_50661cztM0_level2.fits modeM0/AS1T05_241T01_9000006446_50661cztM0_level2_quad_clean.evt
Size (bytes)2,147,492,160204,327,360
Size2.0 GB 194.9 MB
Events in quadrant A12,801,4651,525,545
Events in quadrant B15,963,1341,524,662
Events in quadrant C32,218,645724,906
Events in quadrant D17,182,8341,221,224

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0496712
B0593431
C01075101
D0630961

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03480
B03480
C03480
D03480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172389055.250029%
B17239201911.711816%
C17239948855.037995%
D17239252514.647021%

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 17358 17239 515 515 2.97% 2.99%
B 17359 17240 1332 1332 7.67% 7.73%
C 17359 17240 8531 8531 49.14% 49.48%
D 17359 17240 2073 2073 11.94% 12.02%

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 3 130 997976 2209.41 1817 1770 450.9
A 12 80 975820 2160.27 1817 1770 450.9
A 12 250 737747 1632.27 1817 1770 450.9
B 3 249 2052959 5513.43 1750 1690 372.0
B 4 170 1797513 4826.84 1750 1690 372.0
B 4 206 1693283 4546.69 1750 1690 372.0
C 15 174 9366019 25076.45 1345 1333 373.4
C 1 124 6496100 17391.47 1345 1333 373.4
C 15 1 3937836 10541.04 1345 1333 373.4
D 7 110 3530481 7579.6 1691 1634 465.6
D 10 102 2035633 4368.82 1691 1634 465.6
D 7 60 834820 1789.6 1691 1634 465.6

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