ASTROSAT CZTI

Data Quality Report

Orbit 18937

Creation date: 2024-06-27T17:56:47.508078
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/AS1A05_163T01_9000002820_18937cztM0_level2.evt modeM0/AS1A05_163T01_9000002820_18937cztM0_level2_quad_clean.evt
Size (bytes)921,265,92085,014,720
Size878.6 MB 81.1 MB
Events in quadrant A9,019,952486,931
Events in quadrant B5,789,593513,292
Events in quadrant C4,477,774520,018
Events in quadrant D8,079,609502,470

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0323311
B0223001
C0182031
D0294661

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7922143118.063620%
B79227159.025499%
C79223194.026761%
D7922120915.261298%

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 8037 7925 841 841 10.46% 10.61%
B 8037 7925 317 317 3.94% 4.00%
C 8037 7925 4 4 0.05% 0.05%
D 8037 7925 804 804 10.00% 10.15%

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 14 235 5327040 27489.49 952 929 193.8
A 13 254 12023 57.26 952 929 193.8
A 15 174 10304 48.39 952 929 193.8
B 3 112 1634106 8646.62 966 941 188.9
B 0 189 120887 635.04 966 941 188.9
B 10 247 73390 383.57 966 941 188.9
C 3 233 607099 2703.64 948 955 224.2
C 14 238 143672 636.57 948 955 224.2
C 6 96 32287 139.75 948 955 224.2
D 7 238 3230650 14170.85 933 905 227.9
D 1 52 588785 2579.39 933 905 227.9
D 12 218 331683 1451.32 933 905 227.9

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