ASTROSAT CZTI

Data Quality Report

Orbit 14660

Creation date: 2024-06-27T16:58:07.951969
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/AS1G08_020T01_9000002168_14660cztM0_level2.evt modeM0/AS1G08_020T01_9000002168_14660cztM0_level2_quad_clean.evt
Size (bytes)494,277,12069,845,760
Size471.4 MB 66.6 MB
Events in quadrant A3,421,214426,282
Events in quadrant B3,487,873418,969
Events in quadrant C4,085,859408,595
Events in quadrant D3,539,620414,048

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142493
B0145182
C0168332
D0147682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6406811.264440%
B64061001.561037%
C6406721.123946%
D64061281.998127%

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 7592 6407 0 0 0.00% 0.00%
B 7592 6407 9 9 0.12% 0.14%
C 7592 6407 1 1 0.01% 0.02%
D 7592 6407 54 54 0.71% 0.84%

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 0 23 38910 220.5 862 844 172.6
A 1 162 28095 157.85 862 844 172.6
A 8 15 21899 121.96 862 844 172.6
B 0 214 32716 197.0 854 834 161.8
B 4 80 24624 147.0 854 834 161.8
B 0 205 21299 126.45 854 834 161.8
C 3 233 845781 4467.31 829 835 189.1
C 3 234 6167 28.19 829 835 189.1
C 13 61 5998 27.3 829 835 189.1
D 5 222 147156 741.23 836 818 197.4
D 12 110 48040 239.19 836 818 197.4
D 13 172 43752 217.47 836 818 197.4

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