ASTROSAT CZTI

Data Quality Report

Orbit 20220824_A10_094T15_9000005312_level2

Creation date: 2022-08-29T13:49:17.086801
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/AS1A10_094T15_9000005312cztM0_level2_bc.evt modeM0/AS1A10_094T15_9000005312cztM0_level2_quad_clean.evt
Size (bytes)144,328,32062,657,280
Size137.6 MB 59.8 MB
Events in quadrant A861,472412,234
Events in quadrant B739,885418,478
Events in quadrant C1,049,147420,640
Events in quadrant D1,476,151400,009

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073380
B071560
C077760
D096910

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0700
B0700
C0700
D0700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3479140.402414%
B347670.201381%
C3476441.265823%
D34761303.739931%

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 4822 3480 0 0 0.00% 0.00%
B 4822 3478 0 0 0.00% 0.00%
C 4822 3478 8 8 0.17% 0.23%
D 4822 3479 12 12 0.25% 0.34%

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 10 83 161643 4091.54 165 161 39.5
A 9 143 23756 597.84 165 161 39.5
A 13 6 9455 235.49 165 161 39.5
B 0 190 36223 1006.43 166 162 35.8
B 15 85 12610 347.41 166 162 35.8
B 5 172 9637 264.44 166 162 35.8
C 15 214 139115 3377.93 164 162 41.1
C 14 254 116029 2816.71 164 162 41.1
C 1 23 102345 2484.06 164 162 41.1
D 12 235 351077 8466.83 164 158 41.4
D 2 249 338142 8154.74 164 158 41.4
D 2 153 42493 1021.44 164 158 41.4

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