ASTROSAT CZTI

Data Quality Report

Orbit 42932

Creation date: 2024-06-27T22:45:56.573882
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/AS1T05_143T01_9000005830_42932cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42932cztM0_level2_quad_clean.evt
Size (bytes)1,412,435,520214,073,280
Size1.3 GB 204.2 MB
Events in quadrant A8,420,6401,645,870
Events in quadrant B25,411,110752,312
Events in quadrant C7,391,9351,601,160
Events in quadrant D9,856,5201,410,326

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0338624
B0863064
C0318894
D0405034

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0430
B0440
C0440
D0440

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03160
B03160
C03160
D03160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15529440.283341%
B15529895657.672741%
C15529190.122352%
D155296504.185717%

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 19797 15532 18 18 0.09% 0.12%
B 19797 15531 8191 8191 41.37% 52.74%
C 19797 15532 12 12 0.06% 0.08%
D 19797 15532 656 656 3.31% 4.22%

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 1561067 4453.68 1698 1660 350.1
A 15 222 210287 595.84 1698 1660 350.1
A 7 3 36773 100.28 1698 1660 350.1
B 4 81 20834715 99481.23 1084 1053 209.4
B 4 171 107248 507.08 1084 1053 209.4
B 5 172 101863 481.37 1084 1053 209.4
C 15 214 678468 1771.72 1649 1656 382.0
C 14 254 165880 429.9 1649 1656 382.0
C 12 249 84548 216.99 1649 1656 382.0
D 2 249 1398292 3525.98 1626 1577 396.1
D 12 6 519671 1307.92 1626 1577 396.1
D 1 52 366425 921.05 1626 1577 396.1

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