ASTROSAT CZTI

Data Quality Report

Orbit 01015

Creation date: 2024-06-27T14:06:10.715956
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_998T02_9000000190_01015cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01015cztM0_level2_quad_clean.evt
Size (bytes)1,046,678,400111,432,960
Size998.2 MB 106.3 MB
Events in quadrant A7,451,721747,373
Events in quadrant B7,896,974747,911
Events in quadrant C7,640,739724,727
Events in quadrant D8,282,291705,693

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0267191
B0280121
C0272701
D0291935

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A644280.124185%
B644280.124185%
C6442100.155231%
D64411983.074057%

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 7407 6443 185 185 2.50% 2.87%
B 7407 6443 222 222 3.00% 3.45%
C 7407 6443 174 174 2.35% 2.70%
D 7406 6442 533 533 7.20% 8.27%

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 12 189 10614 18.63 1939 1946 465.2
A 11 79 10496 18.38 1939 1946 465.2
A 3 111 5773 8.23 1939 1946 465.2
B 15 22 47511 96.91 2008 2012 469.5
B 0 151 42359 85.94 2008 2012 469.5
B 8 234 31997 63.87 2008 2012 469.5
C 15 241 321824 626.0 1851 1915 511.0
C 3 79 33565 61.93 1851 1915 511.0
C 3 111 29992 54.94 1851 1915 511.0
D 1 4 805312 1510.69 1799 1858 531.8
D 9 64 571566 1071.19 1799 1858 531.8
D 10 102 51796 93.9 1799 1858 531.8

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