ASTROSAT CZTI

Data Quality Report

Orbit 17634

Creation date: 2024-06-27T17:38:56.359065
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/AS1A05_118T02_9000002612_17634cztM0_level2.evt modeM0/AS1A05_118T02_9000002612_17634cztM0_level2_quad_clean.evt
Size (bytes)540,371,52080,291,520
Size515.3 MB 76.6 MB
Events in quadrant A4,113,271480,236
Events in quadrant B3,997,933484,489
Events in quadrant C3,883,010466,002
Events in quadrant D3,846,885463,409

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0171453
B0168213
C0162793
D0167363

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77141822.359347%
B77142072.683433%
C77142222.877884%
D77151692.190538%

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 7989 7716 38 38 0.48% 0.49%
B 7989 7716 19 19 0.24% 0.25%
C 7989 7715 0 0 0.00% 0.00%
D 7990 7717 34 34 0.43% 0.44%

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 14 237 417246 2133.21 955 933 195.2
A 4 2 21303 104.37 955 933 195.2
A 0 226 8472 38.63 955 933 195.2
B 7 220 106750 572.49 949 925 184.8
B 0 230 68874 367.59 949 925 184.8
B 10 246 22461 116.51 949 925 184.8
C 3 233 170166 783.44 910 914 216.0
C 14 238 139904 643.36 910 914 216.0
C 5 218 20925 92.63 910 914 216.0
D 13 189 187328 817.88 932 905 227.9
D 10 70 73604 318.95 932 905 227.9
D 2 234 28636 121.66 932 905 227.9

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