ASTROSAT CZTI

Data Quality Report

Orbit 44942

Creation date: 2024-06-27T23:08:14.506787
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/AS1A13_017T02_9000006032_44942cztM0_level2.fits modeM0/AS1A13_017T02_9000006032_44942cztM0_level2_quad_clean.evt
Size (bytes)672,189,120113,947,200
Size641.0 MB 108.7 MB
Events in quadrant A5,958,898806,673
Events in quadrant B4,074,913824,997
Events in quadrant C3,466,304805,268
Events in quadrant D10,808,803497,895

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231010
B0171630
C0155780
D0372070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73971251.689874%
B73971211.635798%
C7397220.297418%
D7397259935.135866%

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 7397 7397 14 14 0.19% 0.19%
B 7397 7397 30 30 0.41% 0.41%
C 7397 7397 10 10 0.14% 0.14%
D 7397 7397 2253 2253 30.46% 30.46%

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 2530599 14180.59 851 832 178.4
A 7 191 57346 316.79 851 832 178.4
A 7 3 38350 210.31 851 832 178.4
B 4 171 236613 1418.07 850 823 166.3
B 0 168 104723 624.87 850 823 166.3
B 0 219 98690 588.58 850 823 166.3
C 12 2 68698 343.23 840 844 197.7
C 14 254 43640 216.48 840 844 197.7
C 1 3 27684 135.77 840 844 197.7
D 5 171 3421014 19434.57 682 658 176.0
D 1 52 1675359 9515.71 682 658 176.0
D 1 47 938050 5326.29 682 658 176.0

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