ASTROSAT CZTI

Data Quality Report

Orbit 27420

Creation date: 2024-06-27T19:39:54.036342
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/AS1T03_249T01_9000003934_27420cztM0_level2.evt modeM0/AS1T03_249T01_9000003934_27420cztM0_level2_quad_clean.evt
Size (bytes)558,604,80075,427,200
Size532.7 MB 71.9 MB
Events in quadrant A3,514,347457,997
Events in quadrant B3,606,580454,765
Events in quadrant C3,597,126435,837
Events in quadrant D5,708,699431,802

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149600
B0151610
C0151480
D0219710

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72261421.965126%
B72261652.283421%
C72272022.795074%
D72274085.645496%

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 7481 7226 0 0 0.00% 0.00%
B 7481 7226 4 4 0.05% 0.06%
C 7482 7227 9 9 0.12% 0.12%
D 7482 7227 255 255 3.41% 3.53%

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 13 254 11825 59.79 907 889 182.9
A 0 31 10559 52.87 907 889 182.9
A 3 137 8829 43.41 907 889 182.9
B 0 190 34496 194.81 891 869 172.6
B 15 32 33344 188.14 891 869 172.6
B 4 200 24397 136.3 891 869 172.6
C 14 238 136179 661.94 863 870 204.4
C 2 16 68786 332.25 863 870 204.4
C 3 233 21155 99.24 863 870 204.4
D 1 52 2066989 9916.88 868 846 208.3
D 2 250 253900 1214.59 868 846 208.3
D 12 227 74165 351.91 868 846 208.3

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