ASTROSAT CZTI

Data Quality Report

Orbit 12474

Creation date: 2024-06-27T16:27:53.864983
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_174T01_9000001850_12474cztM0_level2.evt modeM0/AS1A04_174T01_9000001850_12474cztM0_level2_quad_clean.evt
Size (bytes)668,404,80078,272,640
Size637.4 MB 74.6 MB
Events in quadrant A9,324,594461,128
Events in quadrant B3,402,317526,286
Events in quadrant C2,646,475521,696
Events in quadrant D4,488,980466,632

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0315952
B0136391
C0115621
D0171301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5633188033.374756%
B56332103.728031%
C5633210.372803%
D56334147.349547%

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 6834 5634 1385 1385 20.27% 24.58%
B 6834 5635 114 114 1.67% 2.02%
C 6834 5635 0 0 0.00% 0.00%
D 6834 5635 372 372 5.44% 6.60%

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 6080205 47449.81 629 619 128.1
A 0 23 568218 4429.98 629 619 128.1
A 12 189 67294 520.38 629 619 128.1
B 4 239 456900 3515.98 689 675 129.8
B 3 64 169920 1304.32 689 675 129.8
B 0 214 15690 115.72 689 675 129.8
C 13 61 5041 27.78 678 682 156.9
C 3 233 3415 17.42 678 682 156.9
C 8 222 1987 8.32 678 682 156.9
D 1 52 1908059 12053.29 654 638 158.2
D 7 71 60686 379.45 654 638 158.2
D 2 234 21246 130.23 654 638 158.2

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