ASTROSAT CZTI

Data Quality Report

Orbit 22481

Creation date: 2024-06-27T18:41:47.275056
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/AS1A07_144T02_9000003340_22481cztM0_level2.evt modeM0/AS1A07_144T02_9000003340_22481cztM0_level2_quad_clean.evt
Size (bytes)387,290,88074,793,600
Size369.3 MB 71.3 MB
Events in quadrant A3,194,766608,118
Events in quadrant B3,295,957623,076
Events in quadrant C931,88343
Events in quadrant D3,859,773580,018

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136142
B0138442
C064692
D0158192

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6467540.835009%
B6467721.113345%
C64676467100.000000%
D6467580.896861%

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 7582 6467 0 0 0.00% 0.00%
B 7582 6468 5 5 0.07% 0.08%
C 7581 6466 0 0 0.00% 0.00%
D 7582 6468 34 34 0.45% 0.53%

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 13 254 10112 55.72 827 813 166.9
A 0 226 7116 37.77 827 813 166.9
A 3 137 7052 37.39 827 813 166.9
B 15 33 31082 192.5 829 809 157.3
B 12 111 18673 113.59 829 809 157.3
B 11 111 16896 102.29 829 809 157.3
C 7 119 919460 666302.05 2 2 1.4
C 7 226 1874 1356.58 2 2 1.4
C 14 238 1128 815.98 2 2 1.4
D 1 52 637193 3256.93 802 781 195.4
D 13 249 45604 229.39 802 781 195.4
D 13 172 31000 154.65 802 781 195.4

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