ASTROSAT CZTI

Data Quality Report

Orbit 00950

Creation date: 2024-06-27T14:05:12.349535
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_998T01_9000000188_00950cztM0_level2.evt modeM0/AS1P01_998T01_9000000188_00950cztM0_level2_quad_clean.evt
Size (bytes)1,069,620,48092,257,920
Size1020.1 MB 88.0 MB
Events in quadrant A7,300,079608,837
Events in quadrant B7,585,393606,127
Events in quadrant C7,268,803589,706
Events in quadrant D9,832,412559,550

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0259960
B0269100
C0259520
D0335670

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6156200.324886%
B6156210.341131%
C615750.081208%
D61572524.092902%

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 7071 6157 130 130 1.84% 2.11%
B 7071 6157 173 173 2.45% 2.81%
C 7072 6158 132 132 1.87% 2.14%
D 7072 6158 2034 2034 28.76% 33.03%

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 11 79 8273 13.88 1900 1914 458.0
A 3 111 5858 8.61 1900 1914 458.0
A 14 203 4888 6.49 1900 1914 458.0
B 8 234 29970 60.13 1961 1969 465.6
B 12 52 21540 42.03 1961 1969 465.6
B 15 22 18217 34.89 1961 1969 465.6
C 15 241 294378 597.93 1758 1814 489.3
C 10 34 61390 121.76 1758 1814 489.3
C 3 111 26678 50.82 1758 1814 489.3
D 11 131 2900030 5440.33 1712 1777 532.7
D 1 4 158847 294.84 1712 1777 532.7
D 2 16 134441 249.02 1712 1777 532.7

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