ASTROSAT CZTI

Data Quality Report

Orbit 13729

Creation date: 2024-06-27T16:45:15.914755
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/AS1G08_062T01_9000002038_13729cztM0_level2.evt modeM0/AS1G08_062T01_9000002038_13729cztM0_level2_quad_clean.evt
Size (bytes)638,040,960110,217,600
Size608.5 MB 105.1 MB
Events in quadrant A4,189,507679,972
Events in quadrant B4,658,385662,277
Events in quadrant C4,316,256708,122
Events in quadrant D5,568,823683,511

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0179033
B0192972
C0179762
D0221122

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01780
B01780
C01780
D01780

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A8702981.126178%
B87021571.804183%
C8702981.126178%
D87026207.124799%

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 9888 8705 5 5 0.05% 0.06%
B 9888 8705 20 20 0.20% 0.23%
C 9888 8705 6 6 0.06% 0.07%
D 9888 8705 261 261 2.64% 3.00%

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 69 40488 178.25 1074 1051 221.2
A 1 162 16973 71.97 1074 1051 221.2
A 0 226 9364 37.57 1074 1051 221.2
B 0 219 128726 628.21 1060 1035 203.3
B 4 173 101252 493.04 1060 1035 203.3
B 10 246 86560 420.76 1060 1035 203.3
C 3 233 176312 715.67 1048 1055 244.9
C 4 254 48197 192.51 1048 1055 244.9
C 13 61 7529 26.44 1048 1055 244.9
D 5 222 1442143 5868.12 1009 981 245.6
D 8 195 158163 640.01 1009 981 245.6
D 1 52 71329 286.44 1009 981 245.6

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