ASTROSAT CZTI

Data Quality Report

Orbit 04238

Creation date: 2024-06-27T14:39:11.378949
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/AS1G05_240T01_9000000536_04238cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04238cztM0_level2_quad_clean.evt
Size (bytes)717,007,68078,503,040
Size683.8 MB 74.9 MB
Events in quadrant A3,114,687501,576
Events in quadrant B4,391,352497,276
Events in quadrant C2,988,614492,145
Events in quadrant D10,771,815422,687

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01368086
B01774988
C01360187
D036897329

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6644370.556893%
B6645640.963130%
C6645200.300978%
D6633184127.755164%

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 7843 6654 0 0 0.00% 0.00%
B 7843 6653 11 11 0.14% 0.17%
C 7843 6655 0 0 0.00% 0.00%
D 7844 6639 2353 2353 30.00% 35.44%

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 0 149 44236 266.52 795 779 163.1
A 0 226 12003 68.84 795 779 163.1
A 12 194 8294 46.09 795 779 163.1
B 3 0 1076297 7078.5 792 776 151.9
B 10 16 149431 978.37 792 776 151.9
B 15 204 50442 326.87 792 776 151.9
C 13 61 6146 30.39 763 767 177.0
C 9 144 5752 28.17 763 767 177.0
C 10 65 1999 6.96 763 767 177.0
D 2 63 7074514 40987.55 715 695 172.6
D 11 132 737663 4270.18 715 695 172.6
D 13 239 155977 899.74 715 695 172.6

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