ASTROSAT CZTI

Data Quality Report

Orbit 10976

Creation date: 2024-06-27T16:06:27.035839
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/AS1G08_027T06_9000001594_10976cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_10976cztM0_level2_quad_clean.evt
Size (bytes)626,212,80098,104,320
Size597.2 MB 93.6 MB
Events in quadrant A5,328,998621,985
Events in quadrant B5,934,188608,596
Events in quadrant C3,301,699630,023
Events in quadrant D3,902,883599,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0209944
B0224741
C0151475
D0168031

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73333685.018410%
B733487011.862558%
C7332410.559193%
D73341151.568039%

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 7359 7335 164 164 2.23% 2.24%
B 7359 7335 522 522 7.09% 7.12%
C 7359 7335 5 5 0.07% 0.07%
D 7359 7335 66 66 0.90% 0.90%

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 8 15 654745 3715.05 858 841 176.0
A 15 223 640552 3634.41 858 841 176.0
A 8 5 417414 2366.69 858 841 176.0
B 4 239 2337775 14296.92 844 822 163.5
B 0 219 65236 394.07 844 822 163.5
B 15 204 46425 278.99 844 822 163.5
C 0 207 19241 94.66 836 839 194.4
C 1 3 12126 58.06 836 839 194.4
C 13 61 6384 28.52 836 839 194.4
D 8 195 209271 1027.08 833 809 203.0
D 13 104 107491 525.62 833 809 203.0
D 13 152 87137 425.33 833 809 203.0

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