ASTROSAT CZTI

Data Quality Report

Orbit 15288

Creation date: 2024-06-27T17:06:17.979126
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/AS1A04_223T01_9000002258_15288cztM0_level2.evt modeM0/AS1A04_223T01_9000002258_15288cztM0_level2_quad_clean.evt
Size (bytes)493,986,240100,955,520
Size471.1 MB 96.3 MB
Events in quadrant A3,433,100645,154
Events in quadrant B4,081,575652,067
Events in quadrant C3,591,825642,164
Events in quadrant D3,360,230612,127

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01480
B01480
C01480
D01480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151113
B0168152
C0154592
D0151732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7272420.577558%
B72721171.608911%
C7272290.398790%
D7272370.508801%

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 8943 7275 0 0 0.00% 0.00%
B 8943 7275 41 41 0.46% 0.56%
C 8943 7275 0 0 0.00% 0.00%
D 8943 7275 8 8 0.09% 0.11%

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 9 143 16775 87.66 888 870 181.4
A 0 226 8023 39.42 888 870 181.4
A 12 194 6613 31.65 888 870 181.4
B 10 16 192935 1130.95 884 864 169.8
B 3 64 151019 884.14 884 864 169.8
B 0 205 73163 425.71 884 864 169.8
C 3 233 247634 1234.94 856 862 199.8
C 10 22 6463 28.03 856 862 199.8
C 13 61 6193 26.68 856 862 199.8
D 2 152 36777 169.79 853 828 211.7
D 10 70 34996 161.37 853 828 211.7
D 2 234 29296 134.45 853 828 211.7

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