ASTROSAT CZTI

Data Quality Report

Orbit 10438

Creation date: 2024-06-27T15:59:16.254423
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/AS1A03_126T01_9000001512_10438cztM0_level2.evt modeM0/AS1A03_126T01_9000001512_10438cztM0_level2_quad_clean.evt
Size (bytes)1,279,431,360214,686,720
Size1.2 GB 204.7 MB
Events in quadrant A11,966,9901,442,720
Events in quadrant B9,883,0691,488,175
Events in quadrant C7,572,1921,475,118
Events in quadrant D8,278,1471,024,876

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03342
B03344
C03342
D03346

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0476561097
B040734571
C033733360
D0425388933

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161322201.363749%
B162295193.197979%
C16252680.418410%
D133091250.939214%

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 37292 16380 8 8 0.02% 0.05%
B 37292 16391 300 300 0.80% 1.83%
C 37292 16409 5 5 0.01% 0.03%
D 33461 13436 103 103 0.31% 0.77%

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 3945843 10055.45 1941 1899 392.2
A 3 80 327136 829.22 1941 1899 392.2
A 8 5 166237 418.99 1941 1899 392.2
B 4 239 2020619 5536.13 1942 1895 364.6
B 11 51 118860 320.76 1942 1895 364.6
B 0 214 83373 223.44 1942 1895 364.6
C 14 234 55201 120.03 1925 1935 443.8
C 13 61 14242 27.73 1925 1935 443.8
C 14 67 8624 15.07 1925 1935 443.8
D 8 195 968875 2651.24 1537 1495 364.9
D 1 20 638205 1744.99 1537 1495 364.9
D 13 104 291775 795.55 1537 1495 364.9

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