ASTROSAT CZTI

Data Quality Report

Orbit 15564

Creation date: 2024-06-27T17:10:34.577774
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/AS1G08_028T01_9000002306_15564cztM0_level2.evt modeM0/AS1G08_028T01_9000002306_15564cztM0_level2_quad_clean.evt
Size (bytes)559,405,440104,253,120
Size533.5 MB 99.4 MB
Events in quadrant A3,942,906669,217
Events in quadrant B4,279,498672,562
Events in quadrant C3,977,405645,217
Events in quadrant D4,211,413627,029

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0167333
B0176712
C0166662
D0176992

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78062623.356393%
B78063814.880861%
C78063053.907251%
D78062222.843966%

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 8467 7808 3 3 0.04% 0.04%
B 8467 7809 15 15 0.18% 0.19%
C 8467 7808 0 0 0.00% 0.00%
D 8467 7809 29 29 0.34% 0.37%

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 9 143 34966 163.19 1016 991 208.2
A 0 226 9067 38.79 1016 991 208.2
A 12 194 7383 30.7 1016 991 208.2
B 4 48 217951 1107.22 1005 979 196.0
B 0 189 34553 171.33 1005 979 196.0
B 3 64 27619 135.95 1005 979 196.0
C 14 238 147345 636.51 969 976 230.0
C 7 247 19128 78.94 969 976 230.0
C 3 233 13652 55.12 969 976 230.0
D 1 52 190524 777.33 993 965 243.9
D 5 222 76635 310.3 993 965 243.9
D 10 70 43210 173.24 993 965 243.9

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