ASTROSAT CZTI

Data Quality Report

Orbit 26725

Creation date: 2024-06-27T19:32:11.011791
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/AS1T03_223T01_9000003850_26725cztM0_level2.evt modeM0/AS1T03_223T01_9000003850_26725cztM0_level2_quad_clean.evt
Size (bytes)595,952,64084,070,080
Size568.3 MB 80.2 MB
Events in quadrant A4,054,493517,501
Events in quadrant B3,951,391522,260
Events in quadrant C3,785,019507,212
Events in quadrant D5,751,752479,477

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0168590
B0164120
C0157610
D0221020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74591802.413192%
B74592042.734951%
C74581502.011263%
D74584916.583534%

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 7764 7460 67 67 0.86% 0.90%
B 7764 7460 82 82 1.06% 1.10%
C 7763 7459 4 4 0.05% 0.05%
D 7763 7459 335 335 4.32% 4.49%

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 469045 2492.62 924 902 187.8
A 11 29 18436 93.36 924 902 187.8
A 13 254 11295 55.34 924 902 187.8
B 0 189 239244 1365.16 912 890 174.6
B 3 112 66750 377.21 912 890 174.6
B 10 246 47919 269.36 912 890 174.6
C 3 233 157551 750.87 886 890 208.6
C 14 238 140371 668.53 886 890 208.6
C 15 208 30034 139.69 886 890 208.6
D 1 52 1755641 8180.93 877 851 214.5
D 12 227 388743 1808.37 877 851 214.5
D 2 250 152906 708.89 877 851 214.5

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