ASTROSAT CZTI

Data Quality Report

Orbit 33321

Creation date: 2024-06-27T20:47:32.391983
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/AS1T04_071T01_9000004782_33321cztM0_level2.evt modeM0/AS1T04_071T01_9000004782_33321cztM0_level2_quad_clean.evt
Size (bytes)582,122,88093,611,520
Size555.2 MB 89.3 MB
Events in quadrant A3,900,213655,196
Events in quadrant B3,971,970635,984
Events in quadrant C5,403,179594,599
Events in quadrant D4,013,651595,254

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150673
B0150452
C0194682
D0156332

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50382595.140929%
B50384398.713775%
C503870714.033347%
D50381523.017070%

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 7072 5039 140 140 1.98% 2.78%
B 7072 5039 331 331 4.68% 6.57%
C 7072 5039 598 598 8.46% 11.87%
D 7072 5039 134 134 1.89% 2.66%

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 15 169 1277258 9599.47 672 662 133.0
A 15 17 21814 159.05 672 662 133.0
A 13 6 8751 60.83 672 662 133.0
B 5 172 732226 6010.16 652 640 121.7
B 0 219 413493 3391.69 652 640 121.7
B 5 200 194089 1589.23 652 640 121.7
C 1 23 1789121 12893.18 611 617 138.7
C 10 49 685226 4935.29 611 617 138.7
C 15 214 228699 1644.22 611 617 138.7
D 8 195 759890 4829.42 644 628 157.2
D 2 250 530747 3371.91 644 628 157.2
D 2 249 63921 402.59 644 628 157.2

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