ASTROSAT CZTI

Data Quality Report

Orbit 00211

Creation date: 2024-06-27T13:57:57.720272
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_118T01_9000000020_00211cztM0_level2.evt modeM0/AS1P01_118T01_9000000020_00211cztM0_level2_quad_clean.evt
Size (bytes)931,921,92064,681,920
Size888.8 MB 61.7 MB
Events in quadrant A7,267,058389,136
Events in quadrant B7,002,747394,696
Events in quadrant C6,649,002390,601
Events in quadrant D6,922,958381,935

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0256913
B0248772
C0238436
D0246262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A574870.121781%
B574840.069589%
C574750.087002%
D5748100.173974%

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 7454 5749 220 220 2.95% 3.83%
B 7454 5749 112 112 1.50% 1.95%
C 7454 5749 98 98 1.31% 1.70%
D 7454 5749 114 114 1.53% 1.98%

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 15 127 116031 279.61 1832 1817 408.5
A 0 253 21856 49.06 1832 1817 408.5
A 12 150 21687 48.64 1832 1817 408.5
B 5 2 19619 42.05 1807 1818 423.3
B 15 222 18227 38.76 1807 1818 423.3
B 0 148 16635 35.0 1807 1818 423.3
C 3 159 56416 116.24 1655 1710 470.6
C 0 186 45780 93.64 1655 1710 470.6
C 1 1 35902 72.65 1655 1710 470.6
D 1 4 330383 656.6 1646 1698 500.6
D 1 5 61788 120.04 1646 1698 500.6
D 13 117 39783 76.08 1646 1698 500.6

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