ASTROSAT CZTI

Data Quality Report

Orbit 46382

Creation date: 2024-06-27T23:22:28.552010
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_070T06_9000006202_46382cztM0_level2.fits modeM0/AS1A13_070T06_9000006202_46382cztM0_level2_quad_clean.evt
Size (bytes)530,043,840107,766,720
Size505.5 MB 102.8 MB
Events in quadrant A5,931,498719,783
Events in quadrant B5,839,757670,673
Events in quadrant C3,103,154738,616
Events in quadrant D4,207,496649,925

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222182
B0222462
C0144762
D0176402

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6939801.152904%
B694093713.501441%
C6940300.432277%
D69402934.221902%

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 7749 6940 1 1 0.01% 0.01%
B 7750 6941 593 593 7.65% 8.54%
C 7750 6941 24 24 0.31% 0.35%
D 7750 6941 218 218 2.81% 3.14%

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 3076327 20131.38 737 720 152.8
A 13 254 12323 75.95 737 720 152.8
A 3 137 8542 51.2 737 720 152.8
B 5 255 2043928 14835.39 699 678 137.7
B 4 171 719608 5219.92 699 678 137.7
B 5 32 227030 1643.47 699 678 137.7
C 2 14 120769 696.61 736 740 172.3
C 1 3 108016 622.59 736 740 172.3
C 14 254 5413 27.12 736 740 172.3
D 13 249 707735 3950.38 717 696 179.0
D 1 52 349352 1948.02 717 696 179.0
D 0 240 329062 1834.65 717 696 179.0

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