ASTROSAT CZTI

Data Quality Report

Orbit 37855

Creation date: 2024-06-27T21:45:21.153572
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/AS1C07_001T12_9000005352_37855cztM0_level2.evt modeM0/AS1C07_001T12_9000005352_37855cztM0_level2_quad_clean.evt
Size (bytes)466,122,24079,738,560
Size444.5 MB 76.0 MB
Events in quadrant A2,738,519546,316
Events in quadrant B3,507,811528,951
Events in quadrant C2,576,311515,649
Events in quadrant D4,958,736476,735

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110563
B0135952
C0104742
D0180792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A494890.181892%
B49482424.890865%
C4948330.666936%
D49484539.155214%

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 7070 4949 7 7 0.10% 0.14%
B 7070 4949 214 214 3.03% 4.32%
C 7070 4949 26 26 0.37% 0.53%
D 7070 4949 410 410 5.80% 8.28%

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 352964 3017.64 583 573 116.8
A 15 222 53117 449.95 583 573 116.8
A 9 143 35361 297.9 583 573 116.8
B 5 172 863340 8225.19 563 549 104.9
B 0 229 197487 1877.46 563 549 104.9
B 0 213 80854 765.57 563 549 104.9
C 15 214 227701 1772.74 556 560 128.1
C 0 10 128164 995.9 556 560 128.1
C 14 254 31360 240.38 556 560 128.1
D 1 52 1049914 7952.36 551 537 132.0
D 13 249 695946 5269.93 551 537 132.0
D 2 250 276859 2094.02 551 537 132.0

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