ASTROSAT CZTI

Data Quality Report

Orbit 08957

Creation date: 2024-06-27T15:39:24.549728
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/AS1A03_051T01_9000001242_08957cztM0_level2.evt modeM0/AS1A03_051T01_9000001242_08957cztM0_level2_quad_clean.evt
Size (bytes)472,086,72063,884,160
Size450.2 MB 60.9 MB
Events in quadrant A3,496,831372,498
Events in quadrant B3,108,226382,476
Events in quadrant C3,598,510376,024
Events in quadrant D3,665,707363,256

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142953
B0131312
C0148282
D0147522

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63021071.697874%
B6302340.539511%
C63022704.284354%
D63021151.824818%

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 7492 6303 66 66 0.88% 1.05%
B 7492 6303 0 0 0.00% 0.00%
C 7492 6303 177 177 2.36% 2.81%
D 7492 6303 81 81 1.08% 1.29%

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 5 16 262942 1696.22 775 760 154.6
A 8 5 212336 1368.81 775 760 154.6
A 13 248 18521 114.91 775 760 154.6
B 4 173 24498 161.0 787 771 147.4
B 0 214 19164 124.81 787 771 147.4
B 12 111 15819 102.11 787 771 147.4
C 4 254 674944 3911.73 749 754 172.4
C 13 61 5673 28.54 749 754 172.4
C 4 238 4673 22.74 749 754 172.4
D 13 104 313746 1650.65 752 733 189.6
D 8 195 172672 906.71 752 733 189.6
D 6 225 70816 369.58 752 733 189.6

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