ASTROSAT CZTI

Data Quality Report

Orbit 30424

Creation date: 2024-06-27T20:15:03.194711
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/AS1C05_019T04_9000004376_30424cztM0_level2.evt modeM0/AS1C05_019T04_9000004376_30424cztM0_level2_quad_clean.evt
Size (bytes)594,849,600107,683,200
Size567.3 MB 102.7 MB
Events in quadrant A3,623,463720,707
Events in quadrant B5,439,356712,646
Events in quadrant C3,727,711691,193
Events in quadrant D4,776,944675,160

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153052
B0205082
C0153282
D0187762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66161001.511487%
B66161632.463724%
C66161682.539299%
D6616991.496372%

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 7776 6616 9 9 0.12% 0.14%
B 7776 6616 8 8 0.10% 0.12%
C 7776 6616 1 1 0.01% 0.02%
D 7776 6616 28 28 0.36% 0.42%

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 0 13 252556 1462.72 865 850 172.1
A 8 192 22481 125.7 865 850 172.1
A 13 254 12406 67.15 865 850 172.1
B 6 159 1853086 11671.94 847 827 158.7
B 0 229 159264 998.38 847 827 158.7
B 4 80 70136 436.75 847 827 158.7
C 3 233 248013 1290.23 829 834 191.6
C 14 238 142176 737.78 829 834 191.6
C 10 22 70355 362.89 829 834 191.6
D 13 104 1014813 4654.72 832 819 217.8
D 12 227 205575 939.93 832 819 217.8
D 8 195 205219 938.29 832 819 217.8

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