ASTROSAT CZTI

Data Quality Report

Orbit 43493

Creation date: 2024-06-27T22:52:38.096688
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/AS1A12_018T01_9000005874_43493cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43493cztM0_level2_quad_clean.evt
Size (bytes)458,524,80088,133,760
Size437.3 MB 84.1 MB
Events in quadrant A5,144,658582,301
Events in quadrant B2,627,818618,169
Events in quadrant C2,764,797590,801
Events in quadrant D5,995,582479,891

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187661
B0119152
C0119321
D0218251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A56722804.936530%
B5671140.246870%
C567180.141069%
D567180414.177394%

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 7044 5673 280 280 3.98% 4.94%
B 7043 5672 5 5 0.07% 0.09%
C 7043 5672 4 4 0.06% 0.07%
D 7042 5671 825 825 11.72% 14.55%

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 15 237 2260772 18522.68 590 577 122.0
A 10 83 578347 4734.92 590 577 122.0
A 13 6 15426 121.69 590 577 122.0
B 0 245 102141 869.63 596 578 116.8
B 0 189 101940 867.91 596 578 116.8
B 5 255 17409 144.12 596 578 116.8
C 15 214 234109 1716.68 585 588 136.0
C 3 233 160744 1177.35 585 588 136.0
C 5 250 78549 573.11 585 588 136.0
D 2 16 1016610 7524.87 549 532 135.0
D 1 52 894773 6622.57 549 532 135.0
D 1 20 804998 5957.71 549 532 135.0

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