ASTROSAT CZTI

Data Quality Report

Orbit 11479

Creation date: 2024-06-27T16:13:32.566011
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_021T04_9000001682_11479cztM0_level2.evt modeM0/AS1A04_021T04_9000001682_11479cztM0_level2_quad_clean.evt
Size (bytes)704,488,320100,471,680
Size671.9 MB 95.8 MB
Events in quadrant A6,902,964615,626
Events in quadrant B6,688,251614,518
Events in quadrant C3,063,502709,402
Events in quadrant D4,249,196656,802

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0249632
B0243881
C0131661
D0169121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6386105916.583151%
B6386119418.697150%
C6386951.487629%
D63863375.277169%

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 7572 6388 635 635 8.39% 9.94%
B 7572 6388 802 802 10.59% 12.55%
C 7572 6388 0 0 0.00% 0.00%
D 7572 6388 202 202 2.67% 3.16%

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 3949860 26421.97 741 725 149.5
A 1 162 18779 120.79 741 725 149.5
A 9 143 18490 118.86 741 725 149.5
B 4 81 2426623 17447.34 737 722 139.0
B 4 239 649078 4663.05 737 722 139.0
B 3 64 324263 2326.94 737 722 139.0
C 13 61 5676 26.98 784 788 181.2
C 0 207 5289 24.84 784 788 181.2
C 3 202 1960 6.47 784 788 181.2
D 1 52 589191 3220.51 773 753 182.7
D 13 104 331951 1812.64 773 753 182.7
D 2 120 210950 1150.41 773 753 182.7

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