ASTROSAT CZTI

Data Quality Report

Orbit 12928

Creation date: 2024-06-27T16:34:16.943384
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/AS1A04_224T03_9000001898_12928cztM0_level2.evt modeM0/AS1A04_224T03_9000001898_12928cztM0_level2_quad_clean.evt
Size (bytes)531,515,520126,192,960
Size506.9 MB 120.3 MB
Events in quadrant A4,383,112855,739
Events in quadrant B5,019,871804,528
Events in quadrant C3,038,961859,207
Events in quadrant D3,195,692830,918

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174042
B0193031
C0137461
D0142301

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67574066.008584%
B675798114.518277%
C67571061.568744%
D67571211.790736%

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 7453 6759 144 144 1.93% 2.13%
B 7453 6758 513 513 6.88% 7.59%
C 7453 6759 0 0 0.00% 0.00%
D 7453 6759 12 12 0.16% 0.18%

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 15 223 543023 3453.85 788 774 157.0
A 15 239 398968 2536.3 788 774 157.0
A 1 162 94280 595.59 788 774 157.0
B 4 239 1889241 13698.45 738 720 137.9
B 3 64 184239 1331.16 738 720 137.9
B 0 197 22413 157.35 738 720 137.9
C 13 61 5684 27.44 777 779 178.8
C 12 4 3830 17.07 777 779 178.8
C 14 234 3053 12.72 777 779 178.8
D 1 52 106761 574.09 778 754 184.7
D 8 195 65863 352.6 778 754 184.7
D 10 157 32698 173.0 778 754 184.7

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