ASTROSAT CZTI

Data Quality Report

Orbit 39159

Creation date: 2024-06-27T22:01:14.103638
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/AS1A12_054T02_9000005444_39159cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39159cztM0_level2_quad_clean.evt
Size (bytes)455,103,36086,077,440
Size434.0 MB 82.1 MB
Events in quadrant A2,837,947635,234
Events in quadrant B2,363,496635,126
Events in quadrant C2,527,332595,824
Events in quadrant D8,720,563382,949

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116523
B0104342
C0105352
D0294532

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5104170.333072%
B5104140.274295%
C5104130.254702%
D5104199839.145768%

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 7166 5105 5 5 0.07% 0.10%
B 7166 5105 7 7 0.10% 0.14%
C 7166 5105 6 6 0.08% 0.12%
D 7166 5105 1857 1857 25.91% 36.38%

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 429506 3573.64 588 576 120.0
A 13 248 87657 725.52 588 576 120.0
A 15 223 20945 169.7 588 576 120.0
B 5 172 42167 374.5 582 566 111.1
B 15 85 25839 227.51 582 566 111.1
B 12 111 13215 113.87 582 566 111.1
C 15 214 214367 1611.61 572 574 132.7
C 9 187 54889 409.44 572 574 132.7
C 14 254 11608 83.18 572 574 132.7
D 12 235 5891835 48040.16 506 491 122.6
D 2 249 615063 5011.44 506 491 122.6
D 2 120 66546 538.64 506 491 122.6

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