ASTROSAT CZTI

Data Quality Report

Orbit 18286

Creation date: 2024-06-27T17:47:53.022773
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/AS1A06_006T01_9000002720_18286cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18286cztM0_level2_quad_clean.evt
Size (bytes)714,715,20092,364,480
Size681.6 MB 88.1 MB
Events in quadrant A3,341,591614,110
Events in quadrant B3,689,535613,910
Events in quadrant C3,374,289598,745
Events in quadrant D10,759,714475,380

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146251
B0155191
C0147601
D0370251

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7098410.577628%
B7099660.929708%
C7099851.197352%
D7099240333.849838%

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 7353 7099 2 2 0.03% 0.03%
B 7354 7100 7 7 0.10% 0.10%
C 7354 7100 3 3 0.04% 0.04%
D 7354 7100 2342 2342 31.85% 32.99%

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 15 174 22825 125.85 861 845 174.7
A 0 226 7565 38.47 861 845 174.7
A 12 194 6635 33.15 861 845 174.7
B 7 220 154865 928.1 857 835 166.0
B 0 244 69296 412.51 857 835 166.0
B 0 190 29587 173.24 857 835 166.0
C 14 238 124869 639.3 820 825 194.0
C 0 207 38833 195.89 820 825 194.0
C 3 248 7431 34.05 820 825 194.0
D 1 52 5351873 30649.98 719 700 174.6
D 7 238 1860657 10653.3 719 700 174.6
D 13 168 668435 3824.59 719 700 174.6

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