ASTROSAT CZTI

Data Quality Report

Orbit 30895

Creation date: 2024-06-27T20:20:55.095933
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_004T01_9000004466_30895cztM0_level2.evt modeM0/AS1C06_004T01_9000004466_30895cztM0_level2_quad_clean.evt
Size (bytes)169,557,12035,349,120
Size161.7 MB 33.7 MB
Events in quadrant A965,553237,243
Events in quadrant B1,570,234236,824
Events in quadrant C986,722229,097
Events in quadrant D1,476,015223,164

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A042152
B060893
C042432
D057292

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A19721517.657201%
B19711959.893455%
C19711427.204465%
D19711658.371385%

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 2172 1972 0 0 0.00% 0.00%
B 2171 1972 1 1 0.05% 0.05%
C 2171 1972 1 1 0.05% 0.05%
D 2171 1973 30 30 1.38% 1.52%

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 13 6786 125.32 248 242 52.2
A 13 254 3910 70.25 248 242 52.2
A 3 137 2795 48.89 248 242 52.2
B 6 159 546825 11154.0 239 232 49.0
B 6 36 38887 788.81 239 232 49.0
B 0 190 29248 592.11 239 232 49.0
C 14 238 36260 649.33 230 229 55.5
C 3 233 26635 475.87 230 229 55.5
C 1 16 7424 129.66 230 229 55.5
D 1 52 242704 4229.92 232 225 57.3
D 12 233 233003 4060.69 232 225 57.3
D 8 195 116333 2025.44 232 225 57.3

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