ASTROSAT CZTI

Data Quality Report

Orbit 42531

Creation date: 2024-06-27T22:41:16.742225
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/AS1A09_002T01_9000005810_42531cztM0_level2.fits modeM0/AS1A09_002T01_9000005810_42531cztM0_level2_quad_clean.evt
Size (bytes)314,487,36090,653,760
Size299.9 MB 86.5 MB
Events in quadrant A2,723,622620,724
Events in quadrant B2,433,299635,834
Events in quadrant C2,499,069609,733
Events in quadrant D3,594,049527,205

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109831
B0105231
C0104161
D0140291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A501770.139526%
B5017230.458441%
C5018140.278996%
D50183456.875249%

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 7020 5018 1 1 0.01% 0.02%
B 7020 5018 13 13 0.19% 0.26%
C 7021 5019 6 6 0.09% 0.12%
D 7021 5019 311 311 4.43% 6.20%

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 462327 3954.51 576 566 116.8
A 2 79 21789 181.75 576 566 116.8
A 13 248 6661 52.2 576 566 116.8
B 5 255 117861 1084.15 571 556 108.2
B 0 245 40825 372.17 571 556 108.2
B 5 172 36102 328.52 571 556 108.2
C 15 214 207603 1578.8 568 572 131.1
C 9 54 37147 278.92 568 572 131.1
C 0 239 13911 101.72 568 572 131.1
D 2 249 1158445 8691.32 554 541 133.2
D 1 52 129830 970.45 554 541 133.2
D 12 6 103222 770.73 554 541 133.2

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