ASTROSAT CZTI

Data Quality Report

Orbit 04077

Creation date: 2024-06-27T14:37:05.586992
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_222T01_9000000520_04077cztM0_level2.evt modeM0/AS1G05_222T01_9000000520_04077cztM0_level2_quad_clean.evt
Size (bytes)449,642,88052,968,960
Size428.8 MB 50.5 MB
Events in quadrant A3,104,137297,971
Events in quadrant B3,576,719294,960
Events in quadrant C3,019,754287,709
Events in quadrant D3,485,021279,380

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134162
B0146781
C0132781
D0148901

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6350771.212598%
B63501522.393701%
C6350540.850394%
D6350470.740157%

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 7405 6350 21 21 0.28% 0.33%
B 7405 6350 86 86 1.16% 1.35%
C 7405 6350 10 10 0.14% 0.16%
D 7405 6350 6 6 0.08% 0.09%

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 128851 826.45 750 734 155.0
A 15 234 31809 200.46 750 734 155.0
A 0 118 25572 160.22 750 734 155.0
B 14 167 292816 1991.39 754 737 146.7
B 10 16 220114 1495.71 754 737 146.7
B 15 204 61682 415.52 754 737 146.7
C 9 144 183622 1078.15 724 727 169.6
C 12 4 6267 32.66 724 727 169.6
C 13 61 6082 31.57 724 727 169.6
D 2 232 529021 2982.36 726 705 177.1
D 7 53 125251 703.07 726 705 177.1
D 12 233 39298 217.86 726 705 177.1

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