ASTROSAT CZTI

Data Quality Report

Orbit 46101

Creation date: 2024-06-27T23:19:15.686918
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/AS1C07_001T10_9000006170_46101cztM0_level2.fits modeM0/AS1C07_001T10_9000006170_46101cztM0_level2_quad_clean.evt
Size (bytes)781,525,440120,513,600
Size745.3 MB 114.9 MB
Events in quadrant A7,156,844851,019
Events in quadrant B4,087,109900,800
Events in quadrant C3,789,929900,800
Events in quadrant D13,259,364425,197

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270903
B0180153
C0175153
D0451743

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A82043574.351536%
B82052633.205363%
C8205760.926264%
D8205399648.702011%

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 9209 8206 6 6 0.07% 0.07%
B 9210 8207 10 10 0.11% 0.12%
C 9210 8207 1 1 0.01% 0.01%
D 9210 8205 3858 3858 41.89% 47.02%

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 10 83 3447203 18191.01 913 891 189.5
A 3 7 98974 517.72 913 891 189.5
A 7 3 48219 249.82 913 891 189.5
B 0 190 202716 1108.09 927 897 182.1
B 3 112 87889 477.63 927 897 182.1
B 5 172 82577 448.46 927 897 182.1
C 14 254 158823 733.89 920 923 215.2
C 3 233 42048 191.14 920 923 215.2
C 13 61 6013 23.66 920 923 215.2
D 2 37 9818098 71465.64 545 528 137.4
D 1 52 431033 3133.8 545 528 137.4
D 2 165 377187 2741.84 545 528 137.4

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