ASTROSAT CZTI

Data Quality Report

Orbit 08914

Creation date: 2024-06-27T15:38:55.294888
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/AS1A03_092T01_9000001240_08914cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08914cztM0_level2_quad_clean.evt
Size (bytes)447,258,24072,060,480
Size426.5 MB 68.7 MB
Events in quadrant A3,328,932439,485
Events in quadrant B3,224,521443,060
Events in quadrant C3,054,443434,973
Events in quadrant D3,508,619424,046

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138505
B0134702
C0132074
D0143912

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6310741.172742%
B6311971.536999%
C6310560.887480%
D6311711.125020%

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 7531 6311 2 2 0.03% 0.03%
B 7531 6311 11 11 0.15% 0.17%
C 7531 6311 0 0 0.00% 0.00%
D 7531 6311 10 10 0.13% 0.16%

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 8 5 197292 1228.91 802 788 159.9
A 5 16 21589 130.09 802 788 159.9
A 13 251 10689 61.92 802 788 159.9
B 0 214 57995 379.25 804 786 150.8
B 4 173 23802 152.58 804 786 150.8
B 0 219 17469 110.6 804 786 150.8
C 1 3 8357 42.61 780 786 177.7
C 13 61 6032 29.52 780 786 177.7
C 12 4 2422 9.21 780 786 177.7
D 12 233 232780 1204.99 779 760 192.5
D 1 52 134175 692.89 779 760 192.5
D 8 195 92429 476.08 779 760 192.5

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