ASTROSAT CZTI

Data Quality Report

Orbit 17943

Creation date: 2024-06-27T17:42:54.800958
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_025T01_9000002670_17943cztM0_level2.evt modeM0/AS1T03_025T01_9000002670_17943cztM0_level2_quad_clean.evt
Size (bytes)462,715,20084,168,000
Size441.3 MB 80.3 MB
Events in quadrant A3,487,943526,399
Events in quadrant B3,330,864535,998
Events in quadrant C3,258,507505,450
Events in quadrant D3,469,298502,515

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149212
B0141592
C0138982
D0148992

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6858761.108195%
B6858610.889472%
C6858741.079032%
D6858861.254010%

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 7818 6858 12 12 0.15% 0.17%
B 7818 6858 3 3 0.04% 0.04%
C 7818 6858 0 0 0.00% 0.00%
D 7818 6858 36 36 0.46% 0.52%

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 15 174 314458 1879.86 826 807 166.8
A 0 226 7150 38.02 826 807 166.8
A 3 137 6427 33.68 826 807 166.8
B 0 197 37517 232.56 824 804 157.9
B 0 190 23865 146.08 824 804 157.9
B 4 216 19184 116.43 824 804 157.9
C 14 238 121416 659.86 784 789 182.8
C 5 218 55097 297.08 784 789 182.8
C 3 233 19255 101.01 784 789 182.8
D 5 222 200276 1017.36 798 773 196.1
D 7 238 98236 497.01 798 773 196.1
D 14 34 55124 277.16 798 773 196.1

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