ASTROSAT CZTI

Data Quality Report

Orbit 31905

Creation date: 2024-06-27T20:34:03.266621
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/AS1A10_123T09_9000004654_31905cztM0_level2.evt modeM0/AS1A10_123T09_9000004654_31905cztM0_level2_quad_clean.evt
Size (bytes)805,340,16084,257,280
Size768.0 MB 80.4 MB
Events in quadrant A3,036,065619,973
Events in quadrant B7,357,047507,148
Events in quadrant C3,638,520573,878
Events in quadrant D9,947,091423,536

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0126831
B0261591
C0146084
D0336701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6079791.299556%
B6079151224.872512%
C60784106.745640%
D6079290747.820365%

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 7204 6080 0 0 0.00% 0.00%
B 7204 6080 1124 1124 15.60% 18.49%
C 7203 6079 16 16 0.22% 0.26%
D 7204 6080 2876 2876 39.92% 47.30%

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 15 174 16060 99.14 781 765 154.3
A 13 254 12440 75.68 781 765 154.3
A 3 137 7351 42.69 781 765 154.3
B 6 159 1632370 12969.32 672 654 125.8
B 5 172 1494486 11873.38 672 654 125.8
B 4 80 1330708 10571.63 672 654 125.8
C 3 233 271846 1596.47 731 736 169.8
C 14 238 193390 1134.47 731 736 169.8
C 0 10 182168 1068.39 731 736 169.8
D 12 33 5484224 35640.83 647 630 153.9
D 8 195 816347 5301.78 647 630 153.9
D 12 233 604751 3926.51 647 630 153.9

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