ASTROSAT CZTI

Data Quality Report

Orbit 32686

Creation date: 2024-06-27T20:40:48.612175
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_057T03_9000004722_32686cztM0_level2.evt modeM0/AS1A10_057T03_9000004722_32686cztM0_level2_quad_clean.evt
Size (bytes)686,551,68058,161,600
Size654.7 MB 55.5 MB
Events in quadrant A8,186,231233,250
Events in quadrant B2,867,761417,961
Events in quadrant C2,852,657405,627
Events in quadrant D6,552,860357,106

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0276462
B0114011
C0114381
D0229241

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4932213443.268451%
B4932551.115166%
C49321022.068127%
D4932123024.939173%

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 7084 4933 1946 1946 27.47% 39.45%
B 7084 4933 27 27 0.38% 0.55%
C 7084 4933 84 84 1.19% 1.70%
D 7084 4933 1098 1098 15.50% 22.26%

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 15 249 6256242 66000.17 477 468 94.8
A 7 16 34584 359.93 477 468 94.8
A 13 6 17583 180.57 477 468 94.8
B 3 26 150316 1291.3 616 604 115.9
B 3 32 78014 667.68 616 604 115.9
B 15 36 48652 414.42 616 604 115.9
C 0 10 183338 1354.26 587 592 134.9
C 9 236 173390 1280.54 587 592 134.9
C 0 207 47572 348.15 587 592 134.9
D 7 38 1490171 11610.8 542 532 128.3
D 12 227 550641 4287.75 542 532 128.3
D 7 80 317106 2467.49 542 532 128.3

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