ASTROSAT CZTI

Data Quality Report

Orbit 44178

Creation date: 2024-06-27T23:00:12.394744
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/AS1A13_074T05_9000005958_44178cztM0_level2.fits modeM0/AS1A13_074T05_9000005958_44178cztM0_level2_quad_clean.evt
Size (bytes)226,339,20051,416,640
Size215.9 MB 49.0 MB
Events in quadrant A2,629,161333,613
Events in quadrant B1,619,332352,288
Events in quadrant C1,808,973338,218
Events in quadrant D2,067,137302,333

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0680
B0680
C0680
D0680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101363
B069098
C075672
D083951

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A32382116.516368%
B32371143.521779%
C32391073.303489%
D32391976.082124%

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 3889 3240 43 43 1.11% 1.33%
B 3889 3240 4 4 0.10% 0.12%
C 3889 3240 29 29 0.75% 0.90%
D 3889 3240 72 72 1.85% 2.22%

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 10 83 627132 7912.28 372 362 79.2
A 15 223 543781 6860.06 372 362 79.2
A 7 3 10076 122.63 372 362 79.2
B 0 219 53132 696.01 376 363 75.8
B 5 172 29533 384.75 376 363 75.8
B 5 235 12306 157.53 376 363 75.8
C 4 254 153367 1720.36 374 375 88.9
C 9 54 94959 1063.57 374 375 88.9
C 14 254 75415 843.81 374 375 88.9
D 13 249 223715 2370.18 370 358 94.2
D 8 240 157163 1663.95 370 358 94.2
D 1 47 81658 862.72 370 358 94.2

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