ASTROSAT CZTI

Data Quality Report

Orbit 46840

Creation date: 2024-06-27T23:28:20.951860
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_053T01_9000006274_46840cztM0_level2.fits modeM0/AS1A13_053T01_9000006274_46840cztM0_level2_quad_clean.evt
Size (bytes)504,702,720115,807,680
Size481.3 MB 110.4 MB
Events in quadrant A6,778,103762,831
Events in quadrant B3,783,537795,374
Events in quadrant C3,454,162760,196
Events in quadrant D4,108,182687,070

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245273
B0160922
C0156432
D0174542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71963594.988883%
B71961281.778766%
C7196871.209005%
D71962813.904947%

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 7786 7197 20 20 0.26% 0.28%
B 7786 7197 17 17 0.22% 0.24%
C 7786 7197 36 36 0.46% 0.50%
D 7786 7197 171 171 2.20% 2.38%

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 3634707 22000.65 793 775 165.2
A 13 248 43344 257.72 793 775 165.2
A 7 3 15679 90.23 793 775 165.2
B 3 112 488113 3120.72 795 769 156.2
B 0 198 30077 187.67 795 769 156.2
B 5 172 27557 171.54 795 769 156.2
C 14 254 248104 1346.91 781 783 183.6
C 1 241 148237 803.03 781 783 183.6
C 3 233 6799 32.76 781 783 183.6
D 13 249 647472 3326.39 775 751 194.4
D 1 52 361291 1854.43 775 751 194.4
D 2 249 63304 321.74 775 751 194.4

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