ASTROSAT CZTI

Data Quality Report

Orbit 46755

Creation date: 2024-06-27T23:27:15.096338
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_092T17_9000006262_46755cztM0_level2.fits modeM0/AS1A13_092T17_9000006262_46755cztM0_level2_quad_clean.evt
Size (bytes)620,755,200125,881,920
Size592.0 MB 120.1 MB
Events in quadrant A9,236,016815,315
Events in quadrant B4,705,910855,940
Events in quadrant C3,692,320829,274
Events in quadrant D4,720,054750,148

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330730
B0195950
C0169110
D0196002

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A80634055.022944%
B80631371.699119%
C8064100.124008%
D80631371.699119%

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 8064 8064 221 221 2.74% 2.74%
B 8064 8064 78 78 0.97% 0.97%
C 8065 8065 8 8 0.10% 0.10%
D 8065 8065 110 110 1.36% 1.36%

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 3643795 19403.28 884 862 187.7
A 9 191 1813231 9653.18 884 862 187.7
A 13 248 300174 1594.22 884 862 187.7
B 4 171 456290 2564.17 891 862 177.6
B 15 201 287829 1615.69 891 862 177.6
B 3 112 200396 1123.42 891 862 177.6
C 14 254 140137 665.43 881 886 209.3
C 3 233 82368 389.37 881 886 209.3
C 9 237 13696 61.21 881 886 209.3
D 9 49 371904 1678.33 871 844 221.1
D 13 249 331844 1497.14 871 844 221.1
D 13 138 236242 1064.72 871 844 221.1

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