ASTROSAT CZTI

Data Quality Report

Orbit 25380

Creation date: 2024-06-27T19:17:01.333143
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/AS1A09_104T01_9000003710_25380cztM0_level2.evt modeM0/AS1A09_104T01_9000003710_25380cztM0_level2_quad_clean.evt
Size (bytes)502,747,200106,248,960
Size479.5 MB 101.3 MB
Events in quadrant A3,449,245697,474
Events in quadrant B3,489,442698,725
Events in quadrant C3,481,572664,671
Events in quadrant D4,311,292650,495

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149450
B0150400
C0149470
D0176000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7278570.783182%
B7279821.126528%
C72791201.648578%
D72792182.994917%

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 7618 7279 0 0 0.00% 0.00%
B 7619 7280 2 2 0.03% 0.03%
C 7619 7280 0 0 0.00% 0.00%
D 7619 7280 136 136 1.79% 1.87%

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 6 16 20093 107.17 888 870 179.4
A 13 254 11238 57.8 888 870 179.4
A 3 137 8408 42.02 888 870 179.4
B 12 111 20984 118.57 882 857 169.7
B 11 111 18800 105.7 882 857 169.7
B 0 229 16924 94.65 882 857 169.7
C 14 238 138330 684.46 852 855 200.9
C 5 112 7588 33.52 852 855 200.9
C 0 207 7350 32.34 852 855 200.9
D 7 238 616022 2995.7 854 833 205.4
D 8 195 216441 1049.92 854 833 205.4
D 12 233 96134 464.07 854 833 205.4

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