ASTROSAT CZTI

Data Quality Report

Orbit 39891

Creation date: 2024-06-27T22:09:57.719914
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/AS1A12_032T03_9000005502_39891cztM0_level2.fits modeM0/AS1A12_032T03_9000005502_39891cztM0_level2_quad_clean.evt
Size (bytes)456,289,920114,148,800
Size435.2 MB 108.9 MB
Events in quadrant A3,658,995771,462
Events in quadrant B4,250,063769,813
Events in quadrant C3,320,829757,117
Events in quadrant D5,110,815665,115

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152641
B0174891
C0143841
D0201631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7072120.169683%
B70722353.322964%
C707290.127262%
D70724406.221719%

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 8415 7073 5 5 0.06% 0.07%
B 8415 7073 189 189 2.25% 2.67%
C 8415 7073 7 7 0.08% 0.10%
D 8415 7073 434 434 5.16% 6.14%

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 525736 3381.9 761 749 155.2
A 6 10 41386 261.78 761 749 155.2
A 13 248 36861 232.63 761 749 155.2
B 5 255 385269 2657.22 751 731 144.7
B 0 183 356975 2461.71 751 731 144.7
B 0 221 212671 1464.54 751 731 144.7
C 15 214 287718 1645.86 749 756 174.4
C 14 254 30305 169.48 749 756 174.4
C 3 233 18536 101.98 749 756 174.4
D 12 227 1424205 8002.14 725 705 177.9
D 9 19 194237 1087.93 725 705 177.9
D 2 250 136580 763.81 725 705 177.9

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