ASTROSAT CZTI

Data Quality Report

Orbit 15202

Creation date: 2024-06-27T17:05:13.724626
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/AS1T02_069T01_9000002242_15202cztM0_level2.evt modeM0/AS1T02_069T01_9000002242_15202cztM0_level2_quad_clean.evt
Size (bytes)624,075,84096,007,680
Size595.2 MB 91.6 MB
Events in quadrant A4,148,410597,072
Events in quadrant B5,240,702577,556
Events in quadrant C4,828,928586,094
Events in quadrant D4,119,016569,209

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0177463
B0208402
C0198262
D0181042

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01700
B01700
C01700
D01700

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83042623.155106%
B83046247.514451%
C83041932.324181%
D83041842.215800%

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 9089 8307 8 8 0.09% 0.10%
B 9089 8305 247 247 2.72% 2.97%
C 9089 8307 10 10 0.11% 0.12%
D 9089 8307 18 18 0.20% 0.22%

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 12 189 128371 606.8 1035 1010 209.9
A 13 248 32708 151.02 1035 1010 209.9
A 0 226 9133 38.7 1035 1010 209.9
B 3 112 929301 4665.93 1018 991 199.0
B 3 64 178130 890.35 1018 991 199.0
B 0 189 36269 177.32 1018 991 199.0
C 3 233 875205 3726.28 1008 1010 234.6
C 7 247 20879 84.69 1008 1010 234.6
C 13 61 7392 27.2 1008 1010 234.6
D 13 172 130924 524.36 1006 975 247.8
D 2 33 73576 292.96 1006 975 247.8
D 8 195 38157 150.03 1006 975 247.8

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