ASTROSAT CZTI

Data Quality Report

Orbit 26176

Creation date: 2024-06-27T19:25:42.492109
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/AS1A09_138T04_9000003776_26176cztM0_level2.evt modeM0/AS1A09_138T04_9000003776_26176cztM0_level2_quad_clean.evt
Size (bytes)591,874,56086,129,280
Size564.5 MB 82.1 MB
Events in quadrant A3,487,127542,316
Events in quadrant B3,614,574555,548
Events in quadrant C3,566,164529,865
Events in quadrant D6,758,397468,191

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150400
B0153030
C0151450
D0250110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7356741.005982%
B7357941.277695%
C7357811.100992%
D7357112715.318744%

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 7731 7357 0 0 0.00% 0.00%
B 7732 7358 0 0 0.00% 0.00%
C 7732 7358 0 0 0.00% 0.00%
D 7732 7358 1086 1086 14.05% 14.76%

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 13 254 12139 62.1 899 879 181.3
A 11 29 9127 45.49 899 879 181.3
A 6 16 8507 42.07 899 879 181.3
B 0 230 86372 500.14 889 868 171.0
B 0 190 27517 155.88 889 868 171.0
B 3 209 21512 120.75 889 868 171.0
C 14 238 136487 667.13 860 864 203.3
C 3 233 53581 259.31 860 864 203.3
C 8 128 11053 50.12 860 864 203.3
D 1 52 3577665 18722.39 799 779 191.0
D 12 233 119714 622.54 799 779 191.0
D 2 234 38154 195.63 799 779 191.0

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