ASTROSAT CZTI

Data Quality Report

Orbit 13375

Creation date: 2024-06-27T16:39:51.140705
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_103T01_9000001988_13375cztM0_level2.evt modeM0/AS1A04_103T01_9000001988_13375cztM0_level2_quad_clean.evt
Size (bytes)527,100,480100,272,960
Size502.7 MB 95.6 MB
Events in quadrant A3,126,464665,885
Events in quadrant B3,129,392687,127
Events in quadrant C3,179,484655,555
Events in quadrant D6,111,949599,514

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131743
B0131292
C0133632
D0224122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6143841.367410%
B6143831.351131%
C6143610.993000%
D61434186.804493%

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 7444 6145 8 8 0.11% 0.13%
B 7444 6145 3 3 0.04% 0.05%
C 7444 6145 23 23 0.31% 0.37%
D 7444 6145 424 424 5.70% 6.90%

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 9 143 102859 647.93 779 766 157.6
A 1 162 14260 85.64 779 766 157.6
A 0 226 7077 40.05 779 766 157.6
B 3 64 19025 124.22 788 770 147.0
B 12 111 16298 105.66 788 770 147.0
B 11 111 14057 90.41 788 770 147.0
C 14 220 188159 1084.74 753 758 172.8
C 3 233 54051 308.48 753 758 172.8
C 13 61 5525 27.59 753 758 172.8
D 1 52 2755365 16033.91 727 708 171.8
D 14 34 258162 1498.55 727 708 171.8
D 13 249 217651 1262.75 727 708 171.8

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