ASTROSAT CZTI

Data Quality Report

Orbit 20519

Creation date: 2024-06-27T18:16:20.821376
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_115T03_9000003032_20519cztM0_level2.evt modeM0/AS1A05_115T03_9000003032_20519cztM0_level2_quad_clean.evt
Size (bytes)461,162,88094,455,360
Size439.8 MB 90.1 MB
Events in quadrant A3,109,070622,199
Events in quadrant B3,534,974621,482
Events in quadrant C2,978,453594,572
Events in quadrant D3,913,166579,838

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134091
B0145792
C0129461
D0158061

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63431011.592306%
B6343791.245467%
C6343630.993221%
D63431352.128330%

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 7188 6343 44 44 0.61% 0.69%
B 7188 6343 13 13 0.18% 0.20%
C 7187 6342 0 0 0.00% 0.00%
D 7188 6343 82 82 1.14% 1.29%

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 5 16 105268 674.29 762 743 155.0
A 12 96 53412 339.77 762 743 155.0
A 8 205 9322 55.34 762 743 155.0
B 0 189 251435 1716.03 758 737 146.1
B 0 197 110593 751.96 758 737 146.1
B 10 246 75448 511.39 758 737 146.1
C 14 238 112208 647.98 730 734 172.0
C 0 207 13510 74.26 730 734 172.0
C 13 61 5282 26.44 730 734 172.0
D 5 222 235632 1304.23 741 719 180.1
D 7 238 199984 1106.31 741 719 180.1
D 13 153 176611 976.55 741 719 180.1

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