ASTROSAT CZTI

Data Quality Report

Orbit 04824

Creation date: 2024-06-27T14:47:32.932770
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/AS1G05_144T01_9000000612_04824cztM0_level2.evt modeM0/AS1G05_144T01_9000000612_04824cztM0_level2_quad_clean.evt
Size (bytes)623,741,76094,775,040
Size594.8 MB 90.4 MB
Events in quadrant A4,291,354581,061
Events in quadrant B5,172,990565,675
Events in quadrant C4,526,350584,290
Events in quadrant D4,334,590560,064

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0185113
B0210442
C0191782
D0187942

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83341922.303816%
B83344044.847612%
C8334520.623950%
D8334810.971922%

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 9209 8336 102 102 1.11% 1.22%
B 9209 8336 273 273 2.96% 3.27%
C 9209 8336 17 17 0.18% 0.20%
D 9209 8336 48 48 0.52% 0.58%

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 0 50 316164 1611.64 954 932 195.6
A 13 251 152769 776.28 954 932 195.6
A 0 149 64284 323.89 954 932 195.6
B 10 16 1056960 5745.29 951 929 183.8
B 8 3 206073 1116.08 951 929 183.8
B 15 204 127038 686.09 951 929 183.8
C 8 208 748100 3410.27 929 931 219.1
C 9 247 136092 616.91 929 931 219.1
C 12 4 11551 48.47 929 931 219.1
D 13 235 278869 1225.79 924 893 226.8
D 2 136 217006 952.99 924 893 226.8
D 2 234 106855 467.26 924 893 226.8

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