ASTROSAT CZTI

Data Quality Report

Orbit 13748

Creation date: 2024-06-27T16:45:31.365361
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/AS1G08_062T01_9000002038_13748cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13748cztM0_level2_quad_clean.evt
Size (bytes)491,673,600104,670,720
Size468.9 MB 99.8 MB
Events in quadrant A3,162,133679,078
Events in quadrant B3,422,560673,582
Events in quadrant C3,216,630710,760
Events in quadrant D4,661,458666,648

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135363
B0143522
C0135932
D0180402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6304340.539340%
B6304711.126269%
C6304360.571066%
D63041201.903553%

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 7510 6306 6 6 0.08% 0.10%
B 7510 6306 14 14 0.19% 0.22%
C 7510 6306 0 0 0.00% 0.00%
D 7510 6306 85 85 1.13% 1.35%

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 69 37649 229.72 800 785 160.5
A 9 143 16293 96.64 800 785 160.5
A 1 162 12834 75.08 800 785 160.5
B 0 219 112706 740.38 801 782 151.2
B 4 173 65419 427.57 801 782 151.2
B 8 250 27553 177.09 801 782 151.2
C 3 233 108147 574.8 797 802 186.8
C 13 61 5518 25.25 797 802 186.8
C 14 234 2070 6.79 797 802 186.8
D 5 222 1084306 5391.18 778 760 201.0
D 13 168 370000 1837.15 778 760 201.0
D 13 249 86344 425.82 778 760 201.0

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