ASTROSAT CZTI

Data Quality Report

Orbit 34349

Creation date: 2022-02-03T23:55:23.563609
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_019T01_9000004906_34349cztM0_level2.evt modeM0/AS1A05_019T01_9000004906_34349cztM0_level2_quad_clean.evt
Size (bytes)741,781,44066,490,560
Size707.4 MB 63.4 MB
Events in quadrant A2,567,613500,735
Events in quadrant B3,822,912483,632
Events in quadrant C3,059,648477,641
Events in quadrant D12,670,768193,360

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106823
B0146762
C0120372
D0410622

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5086130.255604%
B50862965.819898%
C50861092.143138%
D5086459390.306724%

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 7149 5087 4 4 0.06% 0.08%
B 7149 5087 226 226 3.16% 4.44%
C 7149 5087 63 63 0.88% 1.24%
D 7149 5087 4416 4416 61.77% 86.81%

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 33046 255.58 644 632 126.8
A 9 143 29421 227.0 644 632 126.8
A 13 6 11239 83.63 644 632 126.8
B 5 172 972782 8319.15 624 609 116.9
B 0 229 163030 1389.88 624 609 116.9
B 5 31 81925 695.84 624 609 116.9
C 14 254 248816 1738.99 621 628 142.7
C 15 214 213389 1490.76 621 628 142.7
C 0 10 137787 961.04 621 628 142.7
D 7 223 8915309 98332.96 360 348 90.7
D 2 249 752731 8298.86 360 348 90.7
D 8 195 656631 7238.87 360 348 90.7

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