ASTROSAT CZTI

Data Quality Report

Orbit 11439

Creation date: 2024-06-27T16:12:47.425213
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_021T02_9000001676_11439cztM0_level2.evt modeM0/AS1A04_021T02_9000001676_11439cztM0_level2_quad_clean.evt
Size (bytes)579,994,560111,150,720
Size553.1 MB 106.0 MB
Events in quadrant A3,660,883697,004
Events in quadrant B5,387,432679,314
Events in quadrant C3,581,061755,336
Events in quadrant D4,410,551695,857

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162603
B0212702
C0160722
D0186382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7755550.709220%
B77554876.279819%
C7755400.515796%
D77551852.385558%

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 8175 7759 2 2 0.02% 0.03%
B 8175 7759 202 202 2.47% 2.60%
C 8175 7759 1 1 0.01% 0.01%
D 8175 7759 100 100 1.22% 1.29%

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 1 162 38242 200.54 910 888 186.3
A 1 178 22478 115.91 910 888 186.3
A 13 251 22219 114.52 910 888 186.3
B 4 239 1059136 6205.17 898 875 170.5
B 3 64 359670 2103.81 898 875 170.5
B 15 204 161439 941.48 898 875 170.5
C 14 234 9852 41.84 914 918 213.5
C 13 61 6713 27.14 914 918 213.5
C 12 4 6001 23.8 914 918 213.5
D 1 52 317242 1353.49 887 868 233.7
D 13 152 218915 932.84 887 868 233.7
D 10 253 113886 483.51 887 868 233.7

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