ASTROSAT CZTI

Data Quality Report

Orbit 16491

Creation date: 2024-06-27T17:23:28.829057
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/AS1A05_108T01_9000002438_16491cztM0_level2.evt modeM0/AS1A05_108T01_9000002438_16491cztM0_level2_quad_clean.evt
Size (bytes)416,154,24061,502,400
Size396.9 MB 58.7 MB
Events in quadrant A3,828,740358,078
Events in quadrant B2,617,283389,687
Events in quadrant C2,912,832376,024
Events in quadrant D2,884,896367,984

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150331
B0112131
C0118311
D0123351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A528154910.395758%
B52811242.348040%
C52811392.632077%
D52811793.389510%

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 5647 5283 404 404 7.15% 7.65%
B 5647 5282 3 3 0.05% 0.06%
C 5647 5282 0 0 0.00% 0.00%
D 5647 5283 100 100 1.77% 1.89%

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 15 174 1466885 11576.0 614 600 126.7
A 0 226 5430 38.13 614 600 126.7
A 3 137 4583 31.44 614 600 126.7
B 0 189 74886 596.81 632 616 124.4
B 4 48 33047 260.6 632 616 124.4
B 12 111 15011 115.67 632 616 124.4
C 3 233 434372 2993.57 611 614 144.9
C 14 238 92466 633.91 611 614 144.9
C 7 247 6480 40.48 611 614 144.9
D 13 248 466728 3027.5 619 600 154.0
D 1 52 48386 310.37 619 600 154.0
D 2 234 19966 125.78 619 600 154.0

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