ASTROSAT CZTI

Data Quality Report

Orbit 02825

Creation date: 2024-06-27T14:22:07.856767
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/AS1P01_999T99_9000000410_02825cztM0_level2.evt modeM0/AS1P01_999T99_9000000410_02825cztM0_level2_quad_clean.evt
Size (bytes)1,704,781,44049,579,200
Size1.6 GB 47.3 MB
Events in quadrant A8,549,682315,401
Events in quadrant B12,475,462307,724
Events in quadrant C12,935,088253,007
Events in quadrant D17,274,280199,415

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0296982
B0414111
C0429891
D0562951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6062310.511382%
B606280113.213461%
C6062189031.177829%
D6062438372.302870%

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 6907 6063 536 536 7.76% 8.84%
B 6907 6063 2864 2864 41.47% 47.24%
C 6907 6063 2922 2922 42.30% 48.19%
D 6907 6063 5467 5467 79.15% 90.17%

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 0 13 220202 453.89 2082 2065 480.6
A 0 31 70224 141.82 2082 2065 480.6
A 0 50 55321 110.81 2082 2065 480.6
B 0 182 789831 1593.99 2129 2109 494.2
B 0 219 769474 1552.79 2129 2109 494.2
B 1 158 375699 755.97 2129 2109 494.2
C 0 219 3373090 6724.68 1699 1752 501.3
C 1 16 1400770 2790.57 1699 1752 501.3
C 7 159 996430 1984.05 1699 1752 501.3
D 0 226 6736975 16427.7 1371 1390 410.0
D 1 15 4106740 10012.71 1371 1390 410.0
D 1 31 359721 873.95 1371 1390 410.0

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
Veto Counter