ASTROSAT CZTI

Data Quality Report

Orbit 09778

Creation date: 2024-06-27T15:50:31.928765
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/AS1A03_080T01_9000001392_09778cztM0_level2.evt modeM0/AS1A03_080T01_9000001392_09778cztM0_level2_quad_clean.evt
Size (bytes)1,131,606,720212,103,360
Size1.1 GB 202.3 MB
Events in quadrant A7,629,3271,333,432
Events in quadrant B7,937,8381,332,869
Events in quadrant C7,314,9441,330,384
Events in quadrant D10,248,4591,266,271

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0363841929
B0368041834
C0359321923
D0446252386

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A036018
B035915
C035917
D036020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16852900.534061%
B168821260.746357%
C16819290.172424%
D167954552.709140%

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 19719 17328 1 1 0.01% 0.01%
B 19719 17328 9 9 0.05% 0.05%
C 19719 17325 0 0 0.00% 0.00%
D 19719 17275 419 419 2.12% 2.43%

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 13 251 148278 369.96 1938 1896 395.7
A 15 239 19074 43.41 1938 1896 395.7
A 0 226 17961 40.6 1938 1896 395.7
B 0 229 89219 234.6 1950 1904 372.2
B 0 214 80478 211.12 1950 1904 372.2
B 4 239 61120 159.1 1950 1904 372.2
C 13 61 13838 27.5 1872 1879 434.9
C 8 222 9153 16.73 1872 1879 434.9
C 14 128 6842 11.41 1872 1879 434.9
D 1 52 990596 2130.53 1848 1798 464.1
D 13 137 820407 1763.83 1848 1798 464.1
D 2 152 448025 961.47 1848 1798 464.1

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