ASTROSAT CZTI

Data Quality Report

Orbit 22951

Creation date: 2024-06-27T18:47:55.415380
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/AS1A08_009T01_9000003390_22951cztM0_level2.evt modeM0/AS1A08_009T01_9000003390_22951cztM0_level2_quad_clean.evt
Size (bytes)465,488,64082,270,080
Size443.9 MB 78.5 MB
Events in quadrant A2,969,174520,341
Events in quadrant B3,141,970525,193
Events in quadrant C3,003,485507,798
Events in quadrant D4,549,124492,577

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130961
B0135241
C0131181
D0180861

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6380330.517241%
B6381791.238050%
C6380721.128527%
D63804697.351097%

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 7275 6381 0 0 0.00% 0.00%
B 7276 6382 27 27 0.37% 0.42%
C 7275 6381 0 0 0.00% 0.00%
D 7275 6381 264 264 3.63% 4.14%

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 13 170 16166 99.18 764 747 155.5
A 13 254 10298 61.44 764 747 155.5
A 3 137 6596 37.62 764 747 155.5
B 4 216 132502 909.0 759 738 145.0
B 0 189 19324 128.22 759 738 145.0
B 12 111 17304 114.28 759 738 145.0
C 14 238 115799 668.76 737 742 172.0
C 0 10 7121 37.08 737 742 172.0
C 13 61 5208 25.96 737 742 172.0
D 1 52 1123069 6304.46 730 708 178.0
D 13 153 291487 1633.34 730 708 178.0
D 13 172 207256 1160.21 730 708 178.0

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