ASTROSAT CZTI

Data Quality Report

Orbit 13857

Creation date: 2024-06-27T16:47:02.699035
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_115T02_9000002042_13857cztM0_level2.evt modeM0/AS1A04_115T02_9000002042_13857cztM0_level2_quad_clean.evt
Size (bytes)568,949,76079,027,200
Size542.6 MB 75.4 MB
Events in quadrant A3,656,433471,743
Events in quadrant B3,914,265476,731
Events in quadrant C3,748,368472,474
Events in quadrant D5,390,427437,827

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160223
B0164192
C0160952
D0211552

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A76832353.058701%
B76833244.217103%
C76831662.160614%
D76835156.703111%

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 8054 7684 0 0 0.00% 0.00%
B 8054 7684 27 27 0.34% 0.35%
C 8054 7684 1 1 0.01% 0.01%
D 8054 7684 325 325 4.04% 4.23%

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 1 162 11704 55.15 946 923 195.5
A 0 226 8230 37.38 946 923 195.5
A 12 194 6914 30.65 946 923 195.5
B 3 64 97481 522.2 936 911 184.9
B 0 214 92807 496.92 936 911 184.9
B 0 219 39211 207.11 936 911 184.9
C 3 233 147156 675.75 919 923 216.4
C 14 225 7759 31.59 919 923 216.4
C 13 61 6614 26.3 919 923 216.4
D 5 222 827634 3814.79 896 873 216.7
D 10 157 425081 1957.35 896 873 216.7
D 1 52 411882 1896.45 896 873 216.7

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