ASTROSAT CZTI

Data Quality Report

Orbit 17860

Creation date: 2024-06-27T17:41:45.544784
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_085T01_9000002658_17860cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17860cztM0_level2_quad_clean.evt
Size (bytes)462,902,400104,123,520
Size441.5 MB 99.3 MB
Events in quadrant A3,211,761698,107
Events in quadrant B3,241,200715,420
Events in quadrant C3,198,799665,257
Events in quadrant D3,935,296630,724

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137292
B0136742
C0134952
D0160012

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6357570.896649%
B6358390.613400%
C6358440.692042%
D63582123.334382%

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 7672 6358 27 27 0.35% 0.42%
B 7673 6359 1 1 0.01% 0.02%
C 7673 6359 0 0 0.00% 0.00%
D 7673 6359 175 175 2.28% 2.75%

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 15 174 73566 445.78 816 802 163.2
A 0 226 7359 40.17 816 802 163.2
A 3 137 6028 32.01 816 802 163.2
B 12 111 18014 111.71 823 806 154.0
B 11 111 15239 93.69 823 806 154.0
B 14 111 13243 80.74 823 806 154.0
C 14 238 120986 671.08 774 780 179.1
C 3 233 41884 229.47 774 780 179.1
C 9 160 7773 39.04 774 780 179.1
D 7 238 641707 3463.25 766 743 185.1
D 1 52 282289 1521.25 766 743 185.1
D 13 232 105109 563.91 766 743 185.1

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