ASTROSAT CZTI

Data Quality Report

Orbit 09985

Creation date: 2024-06-27T15:53:20.739806
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/AS1G07_074T01_9000001426_09985cztM0_level2.evt modeM0/AS1G07_074T01_9000001426_09985cztM0_level2_quad_clean.evt
Size (bytes)550,736,64092,355,840
Size525.2 MB 88.1 MB
Events in quadrant A5,327,884577,823
Events in quadrant B4,257,545601,073
Events in quadrant C2,938,759598,417
Events in quadrant D3,717,421569,117

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0201723
B0170942
C0132592
D0155572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A644977912.079392%
B64492023.132269%
C6449150.232594%
D6449610.945883%

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 7689 6449 683 683 8.88% 10.59%
B 7689 6449 159 159 2.07% 2.47%
C 7689 6450 4 4 0.05% 0.06%
D 7689 6450 34 34 0.44% 0.53%

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 13 251 2296860 14963.2 758 743 153.5
A 15 174 105267 681.16 758 743 153.5
A 0 226 7174 41.91 758 743 153.5
B 0 85 634265 4287.34 781 766 147.8
B 4 239 201301 1357.16 781 766 147.8
B 4 81 69003 461.81 781 766 147.8
C 8 208 13098 71.76 746 749 172.1
C 13 61 5731 28.95 746 749 172.1
C 14 67 5207 25.9 746 749 172.1
D 1 52 379587 1877.3 743 724 201.8
D 2 16 135153 666.11 743 724 201.8
D 7 71 93046 457.46 743 724 201.8

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