ASTROSAT CZTI

Data Quality Report

Orbit 25451

Creation date: 2024-06-27T19:17:49.512052
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/AS1A09_085T02_9000003716_25451cztM0_level2.evt modeM0/AS1A09_085T02_9000003716_25451cztM0_level2_quad_clean.evt
Size (bytes)483,399,36099,938,880
Size461.0 MB 95.3 MB
Events in quadrant A3,447,180647,837
Events in quadrant B3,467,653649,424
Events in quadrant C3,453,072623,412
Events in quadrant D3,795,775617,607

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146000
B0147320
C0147080
D0157230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7012420.598973%
B7012610.869937%
C7012811.155163%
D7012620.884199%

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 7287 7013 0 0 0.00% 0.00%
B 7287 7013 0 0 0.00% 0.00%
C 7287 7013 0 0 0.00% 0.00%
D 7287 7013 38 38 0.52% 0.54%

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 6 16 117662 673.79 863 845 173.4
A 13 254 9740 51.31 863 845 173.4
A 3 137 8045 41.53 863 845 173.4
B 15 32 71113 428.69 848 827 164.0
B 0 229 38716 231.09 848 827 164.0
B 0 245 23179 136.33 848 827 164.0
C 14 238 131443 680.25 817 821 192.0
C 7 87 115408 596.75 817 821 192.0
C 9 54 10044 48.03 817 821 192.0
D 7 238 179779 882.56 834 810 202.8
D 9 35 114203 559.18 834 810 202.8
D 8 195 112299 549.79 834 810 202.8

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