ASTROSAT CZTI

Data Quality Report

Orbit 31937

Creation date: 2024-06-27T20:34:35.234831
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/AS1C06_010T03_9000004658_31937cztM0_level2.evt modeM0/AS1C06_010T03_9000004658_31937cztM0_level2_quad_clean.evt
Size (bytes)957,516,480137,730,240
Size913.2 MB 131.3 MB
Events in quadrant A4,272,244982,033
Events in quadrant B7,908,899933,963
Events in quadrant C6,734,668906,793
Events in quadrant D9,580,798827,799

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0175621
B0287183
C0253301
D0335511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7469761.017539%
B746790212.079818%
C746979410.630607%
D7469201326.951399%

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 7868 7469 35 35 0.44% 0.47%
B 7869 7469 574 574 7.29% 7.69%
C 7869 7469 169 169 2.15% 2.26%
D 7869 7469 1829 1829 23.24% 24.49%

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 12 96 862550 4944.39 878 862 174.3
A 13 254 14184 76.44 878 862 174.3
A 13 6 12335 65.83 878 862 174.3
B 6 159 2129303 13638.95 841 821 156.1
B 5 255 2120831 13584.66 841 821 156.1
B 5 172 168987 1077.58 841 821 156.1
C 3 233 3157956 16548.63 825 828 190.8
C 0 10 162053 845.09 825 828 190.8
C 14 238 139719 728.02 825 828 190.8
D 12 33 3879598 21024.0 778 754 184.5
D 8 195 1382074 7486.99 778 754 184.5
D 13 249 833130 4511.62 778 754 184.5

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