ASTROSAT CZTI

Data Quality Report

Orbit 12345

Creation date: 2024-06-27T16:25:48.938059
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/AS1A04_130T01_9000001822_12345cztM0_level2.evt modeM0/AS1A04_130T01_9000001822_12345cztM0_level2_quad_clean.evt
Size (bytes)533,658,24062,464,320
Size508.9 MB 59.6 MB
Events in quadrant A5,417,726358,282
Events in quadrant B3,504,269373,409
Events in quadrant C3,093,395369,408
Events in quadrant D3,720,095350,791

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206663
B0142182
C0130942
D0151192

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62912704.291845%
B6291961.525990%
C6291380.604038%
D62911412.241297%

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 7557 6293 74 74 0.98% 1.18%
B 7557 6293 25 25 0.33% 0.40%
C 7557 6293 0 0 0.00% 0.00%
D 7557 6293 88 88 1.16% 1.40%

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 15 1714813 10556.96 811 797 162.4
A 1 162 159146 975.3 811 797 162.4
A 13 251 134025 820.57 811 797 162.4
B 4 239 181070 1172.54 822 806 153.7
B 0 190 45345 289.71 822 806 153.7
B 0 197 40847 260.45 822 806 153.7
C 13 61 5760 27.16 793 798 182.7
C 8 222 2880 11.4 793 798 182.7
C 3 202 1931 6.2 793 798 182.7
D 1 52 440282 2348.55 781 763 187.1
D 10 253 215809 1149.09 781 763 187.1
D 10 199 34907 182.45 781 763 187.1

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