ASTROSAT CZTI

Data Quality Report

Orbit 24637

Creation date: 2024-06-27T19:08:12.074212
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/AS1C05_012T06_9000003616_24637cztM0_level2.evt modeM0/AS1C05_012T06_9000003616_24637cztM0_level2_quad_clean.evt
Size (bytes)533,001,600136,915,200
Size508.3 MB 130.6 MB
Events in quadrant A3,294,431951,442
Events in quadrant B3,329,178960,111
Events in quadrant C5,426,576899,962
Events in quadrant D3,673,866904,614

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136091
B0137601
C0205611
D0149781

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61671452.351224%
B61681432.318418%
C61682774.490921%
D61681231.994163%

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 7442 6167 15 15 0.20% 0.24%
B 7443 6168 2 2 0.03% 0.03%
C 7443 6168 0 0 0.00% 0.00%
D 7443 6169 14 14 0.19% 0.23%

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 96 107330 654.39 824 808 162.8
A 6 16 13226 76.29 824 808 162.8
A 13 254 9935 56.07 824 808 162.8
B 0 230 44245 290.95 812 792 149.3
B 5 172 27482 178.71 812 792 149.3
B 0 190 20303 130.64 812 792 149.3
C 7 247 2158756 11985.17 789 795 180.1
C 14 238 126817 699.92 789 795 180.1
C 3 233 17104 90.58 789 795 180.1
D 8 195 301024 1566.31 811 788 191.7
D 1 52 231225 1202.18 811 788 191.7
D 2 234 23720 119.63 811 788 191.7

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