ASTROSAT CZTI

Data Quality Report

Orbit 11026

Creation date: 2024-06-27T16:07:12.967055
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/AS1G08_046T09_9000001600_11026cztM0_level2.evt modeM0/AS1G08_046T09_9000001600_11026cztM0_level2_quad_clean.evt
Size (bytes)585,325,44071,461,440
Size558.2 MB 68.2 MB
Events in quadrant A5,505,089418,968
Events in quadrant B4,867,570429,449
Events in quadrant C3,055,271434,191
Events in quadrant D3,851,735420,741

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209193
B0188212
C0135812
D0158872

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65994747.182907%
B65994536.864676%
C6599240.363691%
D65991582.394302%

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 8760 6600 333 333 3.80% 5.05%
B 8760 6601 256 256 2.92% 3.88%
C 8760 6601 0 0 0.00% 0.00%
D 8760 6601 83 83 0.95% 1.26%

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 8 5 1426939 8912.96 787 772 160.0
A 15 174 969566 6054.56 787 772 160.0
A 14 238 30738 187.28 787 772 160.0
B 4 239 1218409 8049.44 790 772 151.3
B 10 244 504384 3329.23 790 772 151.3
B 4 81 34880 225.48 790 772 151.3
C 13 61 5614 26.76 782 787 180.4
C 12 175 4323 19.6 782 787 180.4
C 14 238 3544 15.28 782 787 180.4
D 11 129 310692 1677.25 772 750 184.8
D 1 52 199033 1073.01 772 750 184.8
D 2 14 172403 928.9 772 750 184.8

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