ASTROSAT CZTI

Data Quality Report

Orbit 26566

Creation date: 2024-06-27T19:30:23.015593
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/AS1A09_038T10_9000003844_26566cztM0_level2.evt modeM0/AS1A09_038T10_9000003844_26566cztM0_level2_quad_clean.evt
Size (bytes)522,976,32082,422,720
Size498.7 MB 78.6 MB
Events in quadrant A2,305,712594,751
Events in quadrant B2,663,814591,304
Events in quadrant C3,435,600572,928
Events in quadrant D7,123,662415,371

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096070
B0108170
C0133120
D0243090

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4565250.547645%
B45652004.381161%
C45653247.097481%
D4564196443.032428%

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 4855 4566 2 2 0.04% 0.04%
B 4855 4566 142 142 2.92% 3.11%
C 4855 4566 150 150 3.09% 3.29%
D 4854 4564 1663 1663 34.26% 36.44%

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 0 13 88443 785.26 557 544 111.9
A 6 16 40217 354.42 557 544 111.9
A 5 168 26537 232.21 557 544 111.9
B 5 172 451445 4351.51 545 530 103.6
B 3 112 32117 304.83 545 530 103.6
B 0 189 21687 204.17 545 530 103.6
C 4 254 1076745 8685.69 526 529 123.9
C 3 233 202753 1632.07 526 529 123.9
C 14 238 84404 676.92 526 529 123.9
D 7 80 4415104 44205.3 411 400 99.9
D 1 52 852540 8532.65 411 400 99.9
D 2 250 174076 1739.05 411 400 99.9

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