ASTROSAT CZTI

Data Quality Report

Orbit 20288

Creation date: 2024-06-27T18:13:27.822997
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_174T01_9000003008_20288cztM0_level2.evt modeM0/AS1A05_174T01_9000003008_20288cztM0_level2_quad_clean.evt
Size (bytes)573,554,88096,868,800
Size547.0 MB 92.4 MB
Events in quadrant A3,620,398615,663
Events in quadrant B3,808,885626,187
Events in quadrant C3,589,169600,255
Events in quadrant D5,854,455580,677

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152702
B0160082
C0151552
D0223232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7333590.804582%
B73341051.431688%
C7334941.281702%
D73343004.090537%

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 9153 7335 2 2 0.02% 0.03%
B 9154 7336 9 9 0.10% 0.12%
C 9154 7336 0 0 0.00% 0.00%
D 9154 7336 167 167 1.82% 2.28%

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 8 205 93682 507.01 906 885 183.0
A 4 2 13934 71.3 906 885 183.0
A 14 238 12056 61.03 906 885 183.0
B 7 220 83262 476.45 904 880 172.9
B 0 197 71822 410.28 904 880 172.9
B 4 142 49372 280.45 904 880 172.9
C 14 238 136926 662.5 875 879 205.4
C 0 207 18812 87.33 875 879 205.4
C 3 233 17752 82.16 875 879 205.4
D 1 52 2419532 11281.33 877 852 214.4
D 2 234 36763 167.5 877 852 214.4
D 15 0 32702 148.56 877 852 214.4

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