ASTROSAT CZTI

Data Quality Report

Orbit 36203

Creation date: 2022-06-11T11:36:18.021821
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/AS1T05_009T04_9000005174_36203cztM0_level2.evt modeM0/AS1T05_009T04_9000005174_36203cztM0_level2_quad_clean.evt
Size (bytes)127,595,52017,939,520
Size121.7 MB 17.1 MB
Events in quadrant A771,576110,823
Events in quadrant B936,669114,335
Events in quadrant C869,189113,991
Events in quadrant D1,191,295101,288

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030812
B036901
C034551
D044551

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A136670.512445%
B1366493.587116%
C1366181.317716%
D13661017.393851%

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 3459 1367 3 3 0.09% 0.22%
B 3459 1367 19 19 0.55% 1.39%
C 3459 1367 12 12 0.35% 0.88%
D 3459 1367 106 106 3.06% 7.75%

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 66116 1830.87 171 168 36.0
A 15 223 20915 575.98 171 168 36.0
A 8 144 16692 458.74 171 168 36.0
B 0 190 104669 3104.75 171 166 33.7
B 5 172 91971 2727.5 171 166 33.7
B 0 213 41356 1223.74 171 166 33.7
C 0 10 71123 1759.57 168 169 40.3
C 15 214 65427 1618.32 168 169 40.3
C 4 254 41329 1020.72 168 169 40.3
D 12 6 291705 7072.91 162 158 41.2
D 12 227 72225 1748.34 162 158 41.2
D 2 153 69385 1679.44 162 158 41.2

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