ASTROSAT CZTI

Data Quality Report

Orbit 17865

Creation date: 2024-06-27T17:41:49.633067
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/AS1A05_085T01_9000002658_17865cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17865cztM0_level2_quad_clean.evt
Size (bytes)550,840,320109,373,760
Size525.3 MB 104.3 MB
Events in quadrant A3,666,813709,599
Events in quadrant B3,746,519710,801
Events in quadrant C4,079,273680,481
Events in quadrant D4,656,255664,899

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161602
B0162412
C0170633
D0193422

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7864460.584944%
B7864951.208037%
C78641431.818413%
D78643314.209054%

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 9144 7866 0 0 0.00% 0.00%
B 9144 7866 0 0 0.00% 0.00%
C 9144 7866 0 0 0.00% 0.00%
D 9144 7865 212 212 2.32% 2.70%

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 9302 43.86 952 935 190.8
A 0 226 8315 38.69 952 935 190.8
A 3 137 7542 34.63 952 935 190.8
B 12 111 22523 116.91 952 927 184.7
B 11 111 19187 98.85 952 927 184.7
B 14 111 16866 86.29 952 927 184.7
C 3 233 298617 1374.95 914 918 216.5
C 14 238 140172 643.16 914 918 216.5
C 5 218 59212 269.24 914 918 216.5
D 7 238 1132542 5208.33 907 885 217.3
D 1 52 42979 193.73 907 885 217.3
D 2 234 34293 153.75 907 885 217.3

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