ASTROSAT CZTI

Data Quality Report

Orbit 09663

Creation date: 2024-06-27T15:49:02.286090
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_09663cztM0_level2.evt modeM0/AS1A03_077T01_9000001372_09663cztM0_level2_quad_clean.evt
Size (bytes)1,015,441,920189,673,920
Size968.4 MB 180.9 MB
Events in quadrant A7,186,5911,204,876
Events in quadrant B7,524,2021,189,834
Events in quadrant C6,871,7121,195,625
Events in quadrant D8,127,6911,095,359

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175
B0178
C0175
D0175

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0473155
B0473142
C0473144
D0472156

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04808916414
B04960017365
C04780116459
D05622922003

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A154351350.874636%
B152931661.085464%
C15380430.279584%
D147692361.597942%

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 25006 19577 0 0 0.00% 0.00%
B 25004 19450 8 8 0.03% 0.04%
C 25004 19493 0 0 0.00% 0.00%
D 25006 18882 123 123 0.49% 0.65%

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 7 223 111863 294.8 1825 1788 373.4
A 1 162 25262 62.87 1825 1788 373.4
A 0 226 17217 41.32 1825 1788 373.4
B 0 214 163126 468.5 1808 1767 344.4
B 0 219 68758 194.51 1808 1767 344.4
B 0 85 67680 191.38 1808 1767 344.4
C 13 61 13441 28.69 1759 1768 406.9
C 14 234 5113 8.22 1759 1768 406.9
C 5 128 5027 8.01 1759 1768 406.9
D 1 52 1051718 2503.47 1676 1633 419.5
D 8 195 425771 1011.17 1676 1633 419.5
D 2 152 75561 176.25 1676 1633 419.5

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