ASTROSAT CZTI

Data Quality Report

Orbit 39606

Creation date: 2024-06-27T22:06:42.960698
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_018T01_9000005488_39606cztM0_level2.fits modeM0/AS1A12_018T01_9000005488_39606cztM0_level2_quad_clean.evt
Size (bytes)393,842,88092,427,840
Size375.6 MB 88.1 MB
Events in quadrant A3,206,580643,962
Events in quadrant B2,837,184652,170
Events in quadrant C4,356,263598,232
Events in quadrant D3,793,643557,225

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130103
B0117212
C0162802
D0147802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4956200.403551%
B49561172.360775%
C49564128.313156%
D49563106.255044%

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 7049 4957 6 6 0.09% 0.12%
B 7049 4957 83 83 1.18% 1.67%
C 7049 4957 383 383 5.43% 7.73%
D 7049 4957 265 265 3.76% 5.35%

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 437669 3767.28 579 570 116.0
A 6 10 386392 3325.33 579 570 116.0
A 15 222 83115 711.44 579 570 116.0
B 5 255 472714 4359.28 575 559 108.3
B 5 172 84408 774.16 575 559 108.3
B 0 186 13086 115.66 575 559 108.3
C 9 187 1660046 12879.59 564 570 128.8
C 15 214 216089 1672.69 564 570 128.8
C 15 208 207927 1609.35 564 570 128.8
D 13 249 570845 4252.16 557 543 134.1
D 2 249 307318 2287.31 557 543 134.1
D 12 227 228271 1697.94 557 543 134.1

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