ASTROSAT CZTI

Data Quality Report

Orbit 12174

Creation date: 2024-06-27T16:23:23.806753
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_065T01_9000001796_12174cztM0_level2.evt modeM0/AS1G08_065T01_9000001796_12174cztM0_level2_quad_clean.evt
Size (bytes)556,666,56084,700,800
Size530.9 MB 80.8 MB
Events in quadrant A3,532,487547,557
Events in quadrant B5,577,686512,961
Events in quadrant C3,532,447537,879
Events in quadrant D3,790,110527,566

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146983
B0209262
C0145252
D0154582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62802313.678344%
B628087013.853503%
C62801872.977707%
D62801933.073248%

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 6282 38 38 0.51% 0.60%
B 7481 6282 539 539 7.20% 8.58%
C 7481 6282 95 95 1.27% 1.51%
D 7481 6282 89 89 1.19% 1.42%

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 1 162 189968 1181.44 802 785 160.1
A 1 178 74690 461.53 802 785 160.1
A 1 161 70882 437.75 802 785 160.1
B 0 85 1167807 8169.83 765 748 142.8
B 4 239 763205 5337.47 765 748 142.8
B 10 245 335358 2342.39 765 748 142.8
C 15 208 432291 2398.56 782 788 179.9
C 3 233 44156 241.07 782 788 179.9
C 13 61 5885 28.33 782 788 179.9
D 1 52 330822 1778.09 783 763 185.6
D 4 95 156272 837.75 783 763 185.6
D 13 104 113844 609.19 783 763 185.6

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