ASTROSAT CZTI

Data Quality Report

Orbit 46255

Creation date: 2024-06-27T23:20:52.898238
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_094T02_9000006190_46255cztM0_level2.fits modeM0/AS1A13_094T02_9000006190_46255cztM0_level2_quad_clean.evt
Size (bytes)490,472,640101,286,720
Size467.8 MB 96.6 MB
Events in quadrant A5,713,803682,090
Events in quadrant B3,529,206707,157
Events in quadrant C3,207,009679,308
Events in quadrant D5,221,982563,065

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207131
B0144481
C0139221
D0197691

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62291963.146572%
B62301332.134831%
C62301462.343499%
D623081413.065811%

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 7284 6230 1 1 0.01% 0.02%
B 7285 6230 37 37 0.51% 0.59%
C 7284 6229 83 83 1.14% 1.33%
D 7285 6230 727 727 9.98% 11.67%

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 3008375 21073.38 690 675 142.7
A 9 191 12604 83.58 690 675 142.7
A 13 254 9908 64.69 690 675 142.7
B 3 112 562415 4177.13 686 666 134.5
B 5 172 144465 1069.28 686 666 134.5
B 0 156 42420 310.48 686 666 134.5
C 12 2 398170 2519.6 676 677 157.8
C 1 3 64460 404.3 676 677 157.8
C 14 254 42083 262.46 676 677 157.8
D 1 52 1154376 7139.22 646 625 161.6
D 8 129 919202 5684.0 646 625 161.6
D 5 235 415241 2565.58 646 625 161.6

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