ASTROSAT CZTI

Data Quality Report

Orbit 46698

Creation date: 2024-06-27T23:26:35.893823
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/AS1A13_037T01_9000006256_46698cztM0_level2.fits modeM0/AS1A13_037T01_9000006256_46698cztM0_level2_quad_clean.evt
Size (bytes)86,636,16017,314,560
Size82.6 MB 16.5 MB
Events in quadrant A1,016,35496,168
Events in quadrant B689,669120,939
Events in quadrant C593,994116,358
Events in quadrant D805,13395,202

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01656312780
B0110818136
C0102757462
D01333510058

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09967
B09769
C09773
D010274

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140067044923432140063178489902
B1-1-1
C1-1-1
D1-1-1

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A110550.452489%
B1330120.902256%
C137310.072833%
D1247393.127506%

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 5353 1391 0 0 0.00% 0.00%
B 5739 1656 4 4 0.07% 0.24%
C 5771 1694 0 0 0.00% 0.00%
D 5751 1566 23 23 0.40% 1.47%

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 10 83 529788 20280.0 115 112 26.1
A 15 254 28482 1086.22 115 112 26.1
A 15 235 6228 234.17 115 112 26.1
B 0 198 37904 1262.67 138 134 29.9
B 15 36 30950 1030.2 138 134 29.9
B 4 171 24366 810.09 138 134 29.9
C 8 131 44802 1286.24 138 138 34.7
C 12 2 4511 125.93 138 138 34.7
C 8 147 1893 50.54 138 138 34.7
D 13 249 76279 2210.02 126 121 34.5
D 13 171 70348 2037.91 126 121 34.5
D 12 128 37070 1072.22 126 121 34.5

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