ASTROSAT CZTI

Data Quality Report

Orbit 25547

Creation date: 2024-06-27T19:18:53.357748
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_008T05_9000003724_25547cztM0_level2.evt modeM0/AS1A09_008T05_9000003724_25547cztM0_level2_quad_clean.evt
Size (bytes)506,226,24087,690,240
Size482.8 MB 83.6 MB
Events in quadrant A3,622,065569,197
Events in quadrant B3,366,008590,269
Events in quadrant C3,356,582540,241
Events in quadrant D4,563,655520,256

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144020
B0136130
C0136270
D0178890

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62421161.858379%
B6243550.880987%
C6243851.361525%
D62421171.874399%

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 8817 6244 25 25 0.28% 0.40%
B 8818 6245 0 0 0.00% 0.00%
C 8818 6245 1 1 0.01% 0.02%
D 8817 6244 56 56 0.64% 0.90%

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 317807 1861.65 858 844 170.3
A 13 254 9016 48.0 858 844 170.3
A 3 137 7298 37.91 858 844 170.3
B 12 111 19119 113.84 861 842 160.5
B 11 111 17240 102.14 861 842 160.5
B 14 111 16224 95.81 861 842 160.5
C 14 238 134240 705.14 815 823 189.2
C 2 16 37474 193.71 815 823 189.2
C 13 61 5548 24.97 815 823 189.2
D 8 195 823993 3777.04 804 788 217.9
D 1 52 583778 2674.88 804 788 217.9
D 12 217 44213 199.24 804 788 217.9

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