ASTROSAT CZTI

Data Quality Report

Orbit 41828

Creation date: 2024-06-27T22:33:18.810411
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_097T03_9000005706_41828cztM0_level2.fits modeM0/AS1A12_097T03_9000005706_41828cztM0_level2_quad_clean.evt
Size (bytes)385,845,12093,672,000
Size368.0 MB 89.3 MB
Events in quadrant A3,136,166645,266
Events in quadrant B2,785,312651,683
Events in quadrant C3,249,003598,044
Events in quadrant D4,653,209529,159

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129612
B0123992
C0135462
D0179832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5895200.339271%
B5895190.322307%
C58952293.884648%
D589563010.687023%

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 7178 5896 12 12 0.17% 0.20%
B 7178 5896 10 10 0.14% 0.17%
C 7178 5896 206 206 2.87% 3.49%
D 7178 5896 547 547 7.62% 9.28%

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 615229 4641.23 638 627 132.4
A 13 248 13099 94.18 638 627 132.4
A 2 79 11821 84.53 638 627 132.4
B 4 141 78395 633.71 634 617 122.7
B 3 112 60786 490.24 634 617 122.7
B 0 245 46584 374.52 634 617 122.7
C 0 10 646879 4616.99 601 604 140.0
C 15 214 229028 1631.86 601 604 140.0
C 14 254 24564 171.17 601 604 140.0
D 5 222 1744202 11965.31 591 573 145.7
D 13 249 226045 1547.26 591 573 145.7
D 12 79 119609 816.86 591 573 145.7

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