ASTROSAT CZTI

Data Quality Report

Orbit 19405

Creation date: 2024-06-27T18:02:31.630177
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/AS1A05_104T06_9000002878_19405cztM0_level2.evt modeM0/AS1A05_104T06_9000002878_19405cztM0_level2_quad_clean.evt
Size (bytes)778,092,48062,303,040
Size742.0 MB 59.4 MB
Events in quadrant A3,248,103413,656
Events in quadrant B3,363,427414,502
Events in quadrant C3,312,407392,462
Events in quadrant D13,182,765193,157

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139431
B0141171
C0139671
D0437541

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6763220.325299%
B6764300.443525%
C6764480.709639%
D6764449966.513897%

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 7718 6764 3 3 0.04% 0.04%
B 7719 6765 6 6 0.08% 0.09%
C 7719 6765 4 4 0.05% 0.06%
D 7719 6764 4012 4012 51.98% 59.31%

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 5 16 71183 421.85 822 804 166.8
A 13 254 9386 51.44 822 804 166.8
A 4 2 7680 41.21 822 804 166.8
B 7 220 67677 425.73 824 803 157.1
B 0 198 24766 152.55 824 803 157.1
B 12 111 19174 116.95 824 803 157.1
C 14 238 121113 652.79 785 790 184.3
C 3 233 94515 508.49 785 790 184.3
C 0 207 29957 158.24 785 790 184.3
D 10 66 10633233 78484.95 552 535 135.5
D 7 238 261736 1928.05 552 535 135.5
D 1 52 196581 1447.11 552 535 135.5

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