ASTROSAT CZTI

Data Quality Report

Orbit 09649

Creation date: 2024-06-27T15:48:52.923552
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/AS1A03_077T01_9000001372_09649cztM0_level2.evt modeM0/AS1A03_077T01_9000001372_09649cztM0_level2_quad_clean.evt
Size (bytes)1,189,036,800225,950,400
Size1.1 GB 215.5 MB
Events in quadrant A8,440,7951,411,308
Events in quadrant B8,701,3181,408,484
Events in quadrant C8,127,2941,405,123
Events in quadrant D9,503,6391,361,910

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0283
B0283
C0283
D0281

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0499122
B0495114
C0499119
D0499111

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05067813061
B05176313861
C05021612975
D06080620423

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18371790.430026%
B182191060.581810%
C18343330.179905%
D176232821.600182%

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 38828 21519 6 6 0.02% 0.03%
B 38827 21411 7 7 0.02% 0.03%
C 38826 21507 1 1 0.00% 0.00%
D 38828 20720 133 133 0.34% 0.64%

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 14 111 83432 185.46 2147 2101 438.5
A 15 174 78920 175.17 2147 2101 438.5
A 0 226 19851 40.47 2147 2101 438.5
B 0 214 157209 381.84 2133 2083 406.3
B 10 245 86825 208.59 2133 2083 406.3
B 0 229 56107 132.98 2133 2083 406.3
C 13 61 15774 28.45 2075 2086 481.2
C 8 128 10603 17.7 2075 2086 481.2
C 14 234 10525 17.54 2075 2086 481.2
D 1 52 653424 1319.33 1969 1916 493.8
D 7 71 526807 1062.93 1969 1916 493.8
D 8 195 300037 603.71 1969 1916 493.8

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