ASTROSAT CZTI

Data Quality Report

Orbit 01099

Creation date: 2024-06-27T14:07:27.051874
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/AS1P01_997T02_9000000212_01099cztM0_level2.evt modeM0/AS1P01_997T02_9000000212_01099cztM0_level2_quad_clean.evt
Size (bytes)943,485,12092,145,600
Size899.8 MB 87.9 MB
Events in quadrant A6,899,533618,032
Events in quadrant B7,171,099622,776
Events in quadrant C6,966,448583,765
Events in quadrant D7,151,241560,405

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246052
B0254301
C0248531
D0254771

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5802220.379180%
B5802310.534299%
C5802400.689417%
D58023756.463289%

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 7007 5803 167 167 2.38% 2.88%
B 7007 5802 202 202 2.88% 3.48%
C 7007 5802 232 232 3.31% 4.00%
D 7007 5803 545 545 7.78% 9.39%

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 4 32 15997 33.27 1793 1803 426.6
A 11 79 6623 11.3 1793 1803 426.6
A 13 9 6335 10.62 1793 1803 426.6
B 4 187 32613 70.08 1858 1870 438.7
B 5 249 30727 65.78 1858 1870 438.7
B 15 22 25986 54.97 1858 1870 438.7
C 15 241 274792 604.51 1640 1691 451.8
C 10 19 93318 202.82 1640 1691 451.8
C 10 5 73781 159.57 1640 1691 451.8
D 2 33 35788 70.51 1631 1664 484.0
D 2 216 26895 52.13 1631 1664 484.0
D 2 16 24336 46.85 1631 1664 484.0

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