ASTROSAT CZTI

Data Quality Report

Orbit 26402

Creation date: 2024-06-27T19:28:34.470890
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_127T01_9000003816_26402cztM0_level2.evt modeM0/AS1A09_127T01_9000003816_26402cztM0_level2_quad_clean.evt
Size (bytes)525,291,840100,166,400
Size501.0 MB 95.5 MB
Events in quadrant A3,119,649668,117
Events in quadrant B3,441,008693,210
Events in quadrant C5,485,221609,660
Events in quadrant D3,447,794635,018

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130030
B0140640
C0204210
D0142580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6121450.735174%
B6121841.372325%
C612172811.893481%
D6121500.816860%

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 7481 6122 2 2 0.03% 0.03%
B 7481 6122 19 19 0.25% 0.31%
C 7481 6121 357 357 4.77% 5.83%
D 7481 6122 22 22 0.29% 0.36%

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 0 13 29659 182.07 801 787 158.6
A 13 254 10961 64.16 801 787 158.6
A 0 226 7080 39.68 801 787 158.6
B 0 189 106193 712.64 812 796 147.9
B 0 244 65871 440.0 812 796 147.9
B 5 172 64106 428.07 812 796 147.9
C 2 16 1355462 7832.89 755 762 173.0
C 3 233 1033535 5971.51 755 762 173.0
C 14 238 120648 693.18 755 762 173.0
D 1 52 324776 1763.29 782 767 183.8
D 12 233 100345 541.91 782 767 183.8
D 7 223 37871 201.92 782 767 183.8

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