ASTROSAT CZTI

Data Quality Report

Orbit 31405

Creation date: 2024-06-27T20:27:53.858294
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/AS1T04_026T01_9000004556_31405cztM0_level2.evt modeM0/AS1T04_026T01_9000004556_31405cztM0_level2_quad_clean.evt
Size (bytes)1,068,912,000168,958,080
Size1019.4 MB 161.1 MB
Events in quadrant A6,374,0751,070,292
Events in quadrant B10,390,6991,068,776
Events in quadrant C6,939,4381,035,958
Events in quadrant D7,761,7311,014,929

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277283
B0410143
C0291923
D0320613

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02760
B02760
C02760
D02760

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A134141431.066050%
B134143532.631579%
C134153332.482296%
D134152451.826314%

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 15334 13416 0 0 0.00% 0.00%
B 15334 13416 7 7 0.05% 0.05%
C 15335 13417 8 8 0.05% 0.06%
D 15335 13418 125 125 0.82% 0.93%

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 13 254 21208 59.38 1652 1612 330.0
A 3 137 17844 49.18 1652 1612 330.0
A 0 226 13377 35.65 1652 1612 330.0
B 6 159 3719322 11911.84 1625 1580 312.1
B 0 190 110877 350.19 1625 1580 312.1
B 4 80 100061 315.54 1625 1580 312.1
C 14 238 279966 741.68 1591 1601 375.3
C 10 22 250443 663.02 1591 1601 375.3
C 3 233 139135 366.45 1591 1601 375.3
D 8 195 727607 1894.76 1604 1563 383.2
D 12 218 560886 1459.66 1604 1563 383.2
D 2 250 173031 447.48 1604 1563 383.2

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