ASTROSAT CZTI

Data Quality Report

Orbit 14615

Creation date: 2024-06-27T16:57:32.087441
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/AS1A04_016T01_9000002152_14615cztM0_level2.evt modeM0/AS1A04_016T01_9000002152_14615cztM0_level2_quad_clean.evt
Size (bytes)480,286,08075,409,920
Size458.0 MB 71.9 MB
Events in quadrant A3,413,378467,492
Events in quadrant B3,336,796469,193
Events in quadrant C3,853,011454,995
Events in quadrant D3,512,110449,375

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142403
B0140082
C0157732
D0144852

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6341570.898912%
B6341620.977764%
C6341440.693897%
D63411772.791358%

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 7487 6342 0 0 0.00% 0.00%
B 7487 6342 2 2 0.03% 0.03%
C 7487 6342 0 0 0.00% 0.00%
D 7487 6342 86 86 1.15% 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 1 162 90773 537.37 824 807 167.4
A 1 178 35680 208.3 824 807 167.4
A 1 161 31919 185.83 824 807 167.4
B 0 189 46669 296.91 820 800 154.5
B 0 229 35575 225.1 820 800 154.5
B 12 111 18144 112.27 820 800 154.5
C 3 233 734913 3973.64 799 805 184.7
C 13 61 5586 25.88 799 805 184.7
C 14 234 2493 9.14 799 805 184.7
D 10 199 396978 2112.66 793 774 187.5
D 10 70 71288 376.0 793 774 187.5
D 14 35 24496 126.49 793 774 187.5

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