ASTROSAT CZTI

Data Quality Report

Orbit 26470

Creation date: 2024-06-27T19:29:26.132387
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_104T02_9000003826_26470cztM0_level2.evt modeM0/AS1A09_104T02_9000003826_26470cztM0_level2_quad_clean.evt
Size (bytes)487,128,96099,552,960
Size464.6 MB 94.9 MB
Events in quadrant A3,173,976665,873
Events in quadrant B3,199,648672,257
Events in quadrant C3,331,129633,112
Events in quadrant D4,624,592608,331

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134940
B0134380
C0138020
D0178510

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6239761.218144%
B6240881.410256%
C62401171.875000%
D62404236.778846%

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 7304 6239 0 0 0.00% 0.00%
B 7305 6240 2 2 0.03% 0.03%
C 7305 6240 2 2 0.03% 0.03%
D 7305 6240 372 372 5.09% 5.96%

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 10471 58.23 823 808 165.9
A 3 137 7253 38.84 823 808 165.9
A 0 226 7167 38.32 823 808 165.9
B 12 111 18500 113.88 809 789 155.5
B 11 111 16657 102.03 809 789 155.5
B 10 249 16536 101.25 809 789 155.5
C 14 238 123842 678.3 776 780 181.4
C 3 233 97895 535.28 776 780 181.4
C 4 254 73149 398.89 776 780 181.4
D 7 80 1313660 7055.99 779 762 186.1
D 12 233 220367 1180.24 779 762 186.1
D 11 176 89642 477.67 779 762 186.1

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