ASTROSAT CZTI

Data Quality Report

Orbit 51389

Creation date: 2025-03-29T22:07:13.806987
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/AS1C07_001T03_9000006456_51389cztM0_level2.fits modeM0/AS1C07_001T03_9000006456_51389cztM0_level2_quad_clean.evt
Size (bytes)426,519,36046,892,160
Size406.8 MB 44.7 MB
Events in quadrant A4,280,701321,025
Events in quadrant B2,151,804378,263
Events in quadrant C7,033,462132,150
Events in quadrant D2,029,142322,039

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0824
B0802
C0846
D0802

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A016256847
B09489514
C0246201110
D09241489

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B092
C070
D0114

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A375944211.758446%
B3770942.493369%
C3746249166.497597%
D3771731.935826%

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 5095 3782 313 313 6.14% 8.28%
B 5109 3796 25 25 0.49% 0.66%
C 5083 3758 2087 2087 41.06% 55.53%
D 5100 3791 38 38 0.75% 1.00%

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 12 3 1696623 17897.42 378 368 94.8
A 15 174 412889 4352.57 378 368 94.8
A 4 175 255004 2686.7 378 368 94.8
B 4 81 145877 1728.55 391 378 84.2
B 5 185 136425 1616.26 391 378 84.2
B 0 216 35279 414.63 391 378 84.2
C 15 179 4934938 65310.48 272 270 75.6
C 15 248 577755 7643.03 272 270 75.6
C 4 12 307345 4064.15 272 270 75.6
D 11 176 213406 1966.21 382 368 108.3
D 15 171 60222 552.42 382 368 108.3
D 2 153 47825 438.0 382 368 108.3

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