ASTROSAT CZTI

Data Quality Report

Orbit 44650

Creation date: 2024-06-27T23:04:54.789743
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_072T01_9000006008_44650cztM0_level2.fits modeM0/AS1A13_072T01_9000006008_44650cztM0_level2_quad_clean.evt
Size (bytes)483,485,760110,007,360
Size461.1 MB 104.9 MB
Events in quadrant A5,558,006734,597
Events in quadrant B3,195,253774,398
Events in quadrant C3,031,016731,469
Events in quadrant D5,586,236617,751

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02195319
B0143323
C0142003
D02139512

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67772573.792238%
B6781841.238755%
C6780230.339233%
D67806709.882006%

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 7777 6782 61 61 0.78% 0.90%
B 7777 6783 26 26 0.33% 0.38%
C 7777 6783 10 10 0.13% 0.15%
D 7777 6783 532 532 6.84% 7.84%

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 2024682 13312.57 738 722 152.0
A 15 223 543472 3569.93 738 722 152.0
A 13 248 100649 657.27 738 722 152.0
B 0 219 91864 623.29 745 722 146.2
B 0 183 45941 309.24 745 722 146.2
B 0 189 37453 251.19 745 722 146.2
C 2 14 105907 621.47 725 729 169.2
C 14 254 54371 316.96 725 729 169.2
C 3 233 30244 174.4 725 729 169.2
D 1 52 1215857 7099.05 687 665 171.2
D 13 249 616445 3597.33 687 665 171.2
D 13 153 290262 1691.8 687 665 171.2

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