ASTROSAT CZTI

Data Quality Report

Orbit 38949

Creation date: 2024-06-27T21:58:31.634735
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/AS1T05_064T01_9000005416_38949cztM0_level2.fits modeM0/AS1T05_064T01_9000005416_38949cztM0_level2_quad_clean.evt
Size (bytes)364,913,28091,054,080
Size348.0 MB 86.8 MB
Events in quadrant A2,915,625619,353
Events in quadrant B2,818,314623,411
Events in quadrant C3,313,102591,390
Events in quadrant D4,029,056535,031

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01120
D01120

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120633
B0120322
C0133922
D0155382

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5545260.468891%
B55451031.857529%
C55451302.344454%
D55453356.041479%

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 7159 5546 14 14 0.20% 0.25%
B 7159 5546 90 90 1.26% 1.62%
C 7159 5546 130 130 1.82% 2.34%
D 7159 5546 326 326 4.55% 5.88%

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 428928 3408.19 617 603 125.7
A 13 248 44474 349.08 617 603 125.7
A 9 143 38332 300.21 617 603 125.7
B 5 172 282719 2404.74 604 588 117.3
B 0 230 61932 522.86 604 588 117.3
B 0 229 38894 326.5 604 588 117.3
C 14 254 735944 5256.15 594 598 139.9
C 15 214 244521 1743.53 594 598 139.9
C 1 128 11539 78.2 594 598 139.9
D 12 227 842281 5838.72 591 573 144.2
D 2 16 234122 1620.07 591 573 144.2
D 12 6 230954 1598.09 591 573 144.2

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