ASTROSAT CZTI

Data Quality Report

Orbit 15152

Creation date: 2024-06-27T17:04:27.947311
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/AS1A04_218T08_9000002236_15152cztM0_level2.evt modeM0/AS1A04_218T08_9000002236_15152cztM0_level2_quad_clean.evt
Size (bytes)358,421,76070,283,520
Size341.8 MB 67.0 MB
Events in quadrant A2,666,746450,193
Events in quadrant B2,543,857458,076
Events in quadrant C2,728,167447,018
Events in quadrant D2,577,209423,841

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111922
B0108241
C0112221
D0112321

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4975320.643216%
B4975501.005025%
C4975130.261307%
D4975440.884422%

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 6206 4977 2 2 0.03% 0.04%
B 6206 4977 20 20 0.32% 0.40%
C 6206 4977 0 0 0.00% 0.00%
D 6206 4977 30 30 0.48% 0.60%

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 15 239 349566 2938.3 590 577 118.8
A 12 189 37421 310.2 590 577 118.8
A 13 248 5564 41.98 590 577 118.8
B 3 64 111472 978.98 598 583 113.3
B 0 229 60983 533.24 598 583 113.3
B 12 111 12575 105.87 598 583 113.3
C 3 233 470542 3520.15 578 582 133.5
C 13 61 4123 26.52 578 582 133.5
C 14 234 2104 11.4 578 582 133.5
D 2 16 236581 1702.1 569 552 138.7
D 10 70 44738 318.64 569 552 138.7
D 2 33 43907 312.65 569 552 138.7

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