ASTROSAT CZTI

Data Quality Report

Orbit 35391

Creation date: 2022-04-16T12:04:21.557456
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/AS1A11_099T01_9000005068_35391cztM0_level2.evt modeM0/AS1A11_099T01_9000005068_35391cztM0_level2_quad_clean.evt
Size (bytes)704,079,36042,672,960
Size671.5 MB 40.7 MB
Events in quadrant A2,772,873281,787
Events in quadrant B11,088,154111,508
Events in quadrant C3,310,967270,721
Events in quadrant D3,795,628258,825

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111573
B0364812
C0128162
D0146442

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A525570.133206%
B5255405277.107517%
C52551673.177926%
D52552414.586108%

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 7257 5256 0 0 0.00% 0.00%
B 7257 5256 3385 3385 46.64% 64.40%
C 7257 5256 131 131 1.81% 2.49%
D 7257 5256 203 203 2.80% 3.86%

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 123487 900.74 677 665 136.4
A 9 143 14172 99.06 677 665 136.4
A 13 6 14046 98.13 677 665 136.4
B 4 251 7915860 103252.12 407 399 76.7
B 5 14 327062 4261.11 407 399 76.7
B 5 31 304212 3963.05 407 399 76.7
C 0 10 380572 2559.62 641 647 148.4
C 15 214 216962 1457.35 641 647 148.4
C 0 207 129939 871.06 641 647 148.4
D 7 80 809575 5199.95 634 618 155.6
D 2 152 96312 615.12 634 618 155.6
D 8 195 94996 606.66 634 618 155.6

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