ASTROSAT CZTI

Data Quality Report

Orbit 35970

Creation date: 2022-05-25T13:35:29.383361
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/AS1T05_009T08_9000005150_35970cztM0_level2.evt modeM0/AS1T05_009T08_9000005150_35970cztM0_level2_quad_clean.evt
Size (bytes)617,987,52067,340,160
Size589.4 MB 64.2 MB
Events in quadrant A1,963,740543,664
Events in quadrant B10,691,027182,929
Events in quadrant C2,561,959526,714
Events in quadrant D3,223,316496,870

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A083301
B0345461
C0100681
D0122531

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A406560.147601%
B40654065100.000000%
C40651583.886839%
D40652546.248462%

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 4065 4065 1 1 0.02% 0.02%
B 4064 4064 4001 4001 98.45% 98.45%
C 4065 4065 121 121 2.98% 2.98%
D 4065 4065 246 246 6.05% 6.05%

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 106757 1110.0 474 465 95.8
A 8 144 10583 105.66 474 465 95.8
A 15 169 9976 99.32 474 465 95.8
B 5 31 3899496 110630.61 177 173 35.2
B 5 15 3731820 105873.34 177 173 35.2
B 5 14 2104604 59706.38 177 173 35.2
C 9 187 583550 5628.96 446 450 103.6
C 15 214 164943 1587.93 446 450 103.6
C 0 10 40933 390.8 446 450 103.6
D 2 250 771472 7175.93 446 434 107.4
D 12 227 338244 3143.94 446 434 107.4
D 8 195 95987 889.3 446 434 107.4

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