ASTROSAT CZTI

Data Quality Report

Orbit 15214

Creation date: 2024-06-27T17:05:24.215907
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/AS1T02_071T01_9000002246_15214cztM0_level2.evt modeM0/AS1T02_071T01_9000002246_15214cztM0_level2_quad_clean.evt
Size (bytes)618,966,720129,951,360
Size590.3 MB 123.9 MB
Events in quadrant A5,789,478861,583
Events in quadrant B4,630,684872,975
Events in quadrant C4,638,108884,892
Events in quadrant D3,238,781853,827

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217753
B0180962
C0181312
D0142172

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66361261.898734%
B66364636.977095%
C66361352.034358%
D6636370.557565%

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 7832 6638 60 60 0.77% 0.90%
B 7832 6638 279 279 3.56% 4.20%
C 7832 6638 46 46 0.59% 0.69%
D 7832 6638 21 21 0.27% 0.32%

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 0 253 2652297 16917.26 779 763 156.7
A 12 189 123698 784.35 779 763 156.7
A 9 143 7849 45.21 779 763 156.7
B 3 112 1403053 9670.64 776 756 145.0
B 0 229 102439 701.23 776 756 145.0
B 10 245 20858 138.63 776 756 145.0
C 3 233 1556039 8766.62 776 782 177.4
C 10 22 29780 163.45 776 782 177.4
C 7 247 13846 73.64 776 782 177.4
D 2 33 137470 737.13 771 749 185.5
D 13 172 76994 411.07 771 749 185.5
D 8 195 36724 193.96 771 749 185.5

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