ASTROSAT CZTI

Data Quality Report

Orbit 21638

Creation date: 2024-06-27T18:30:31.418492
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/AS1A06_002T02_9000003206_21638cztM0_level2.evt modeM0/AS1A06_002T02_9000003206_21638cztM0_level2_quad_clean.evt
Size (bytes)441,175,68095,569,920
Size420.7 MB 91.1 MB
Events in quadrant A3,019,611628,446
Events in quadrant B3,286,975653,247
Events in quadrant C3,102,952615,192
Events in quadrant D3,534,432568,806

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128352
B0136682
C0130032
D0145714

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6140370.602606%
B6140631.026059%
C6141590.960756%
D61402083.387622%

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 8660 6142 0 0 0.00% 0.00%
B 8660 6142 4 4 0.05% 0.07%
C 8661 6143 0 0 0.00% 0.00%
D 8659 6141 157 157 1.81% 2.56%

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 13 254 8331 48.32 782 767 156.5
A 0 226 6844 38.82 782 767 156.5
A 10 253 6417 36.09 782 767 156.5
B 3 64 53053 356.7 793 774 146.6
B 0 230 37047 247.49 793 774 146.6
B 0 229 32026 213.23 793 774 146.6
C 14 238 119936 671.79 762 768 177.4
C 10 22 8288 42.39 762 768 177.4
C 13 61 5456 26.43 762 768 177.4
D 1 52 248903 1382.57 742 720 179.5
D 7 223 161889 897.83 742 720 179.5
D 2 136 122587 678.89 742 720 179.5

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