ASTROSAT CZTI

Data Quality Report

Orbit 47753

Creation date: 2024-07-27T18:34:12.951073
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/AS1C09_004T04_9000006346_47753cztM0_level2.fits modeM0/AS1C09_004T04_9000006346_47753cztM0_level2_quad_clean.evt
Size (bytes)504,950,400106,073,280
Size481.6 MB 101.2 MB
Events in quadrant A7,070,275704,764
Events in quadrant B3,592,259725,709
Events in quadrant C3,879,243678,455
Events in quadrant D3,634,856639,229

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0262211
B0152621
C0163881
D0156582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66422633.959651%
B6643821.234382%
C66432473.718200%
D66421962.950918%

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 7452 6643 40 40 0.54% 0.60%
B 7453 6644 21 21 0.28% 0.32%
C 7453 6644 168 168 2.25% 2.53%
D 7452 6643 155 155 2.08% 2.33%

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 4029197 26871.72 721 704 149.9
A 9 191 116925 775.24 721 704 149.9
A 14 248 94330 624.52 721 704 149.9
B 0 200 267703 1910.23 715 693 139.8
B 0 190 110791 787.66 715 693 139.8
B 5 172 105431 749.31 715 693 139.8
C 12 2 1020955 6223.88 698 700 163.9
C 14 254 118028 715.74 698 700 163.9
C 1 3 11117 63.55 698 700 163.9
D 2 37 209412 1187.66 707 684 175.7
D 12 233 182079 1032.13 707 684 175.7
D 1 232 176492 1000.34 707 684 175.7

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