ASTROSAT CZTI

Data Quality Report

Orbit 01122

Creation date: 2024-06-27T14:07:52.357140
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/AS1P01_997T01_9000000214_01122cztM0_level2.evt modeM0/AS1P01_997T01_9000000214_01122cztM0_level2_quad_clean.evt
Size (bytes)129,300,48010,725,120
Size123.3 MB 10.2 MB
Events in quadrant A890,79368,480
Events in quadrant B1,020,31568,649
Events in quadrant C1,079,39865,237
Events in quadrant D877,35767,095

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092
B081
C092
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073414230
B081694687
C085204853
D070133925

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03717
B03822
C03717
D04020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66020.303030%
B65950.758725%
C660111.666667%
D67620.295858%

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 2015 716 44 44 2.18% 6.15%
B 2036 719 96 96 4.72% 13.35%
C 2043 721 116 116 5.68% 16.09%
D 2067 739 37 37 1.79% 5.01%

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 12 251 2373 36.8 231 232 58.2
A 11 79 863 10.85 231 232 58.2
A 13 9 810 9.94 231 232 58.2
B 0 216 30589 514.14 246 246 59.0
B 8 4 29462 495.05 246 246 59.0
B 8 234 10818 179.14 246 246 59.0
C 5 234 129913 1925.96 232 240 67.3
C 15 241 33825 498.82 232 240 67.3
C 7 159 2764 37.49 232 240 67.3
D 2 16 14011 194.69 226 231 70.8
D 10 125 5228 70.6 226 231 70.8
D 10 85 4238 56.61 226 231 70.8

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