ASTROSAT CZTI

Data Quality Report

Orbit 24984

Creation date: 2024-06-27T19:12:20.347886
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/AS1A08_003T18_9000003658_24984cztM0_level2.evt modeM0/AS1A08_003T18_9000003658_24984cztM0_level2_quad_clean.evt
Size (bytes)469,486,08086,379,840
Size447.7 MB 82.4 MB
Events in quadrant A3,167,730563,182
Events in quadrant B3,343,874583,215
Events in quadrant C3,615,899527,940
Events in quadrant D3,674,127512,693

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129723
B0134542
C0142942
D0150092

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6137140.228124%
B6137430.700668%
C61371943.161154%
D6137671.091739%

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 7562 6138 0 0 0.00% 0.00%
B 7562 6138 5 5 0.07% 0.08%
C 7562 6138 107 107 1.41% 1.74%
D 7562 6138 37 37 0.49% 0.60%

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 13 254 8239 45.44 822 807 163.6
A 0 226 7117 38.58 822 807 163.6
A 3 137 6989 37.8 822 807 163.6
B 3 64 89151 572.01 823 804 154.4
B 12 111 18308 113.33 823 804 154.4
B 0 190 17323 106.95 823 804 154.4
C 2 16 354759 1953.17 776 783 181.2
C 14 238 125788 689.75 776 783 181.2
C 0 10 70137 382.68 776 783 181.2
D 7 238 349253 1866.01 774 754 186.8
D 2 244 147470 785.58 774 754 186.8
D 10 70 131161 698.25 774 754 186.8

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