ASTROSAT CZTI

Data Quality Report

Orbit 20220126_A11_059T09_9000004888_level2

Creation date: 2022-02-01T12:56:07.244510
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/AS1A11_059T09_9000004888cztM0_level2_bc.evt modeM0/AS1A11_059T09_9000004888cztM0_level2_quad_clean.evt
Size (bytes)8,315,274,2402,207,341,440
Size7.7 GB 2.1 GB
Events in quadrant A43,316,44014,127,959
Events in quadrant B54,849,09014,282,652
Events in quadrant C55,761,30214,029,475
Events in quadrant D86,792,23813,205,304

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03633660
B04190760
C03963850
D05038650

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A033380
B033380
C033380
D033380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05990
B05990
C05990
D05990

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A16370824091.471522%
B16370879864.878198%
C16370838452.348694%
D16370871704.379749%

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 223122 163731 632 632 0.28% 0.39%
B 223121 163700 374 374 0.17% 0.23%
C 223121 163641 799 799 0.36% 0.49%
D 223121 163703 1986 1986 0.89% 1.21%

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 15 169 7810566 4167.33 8531 8394 1872.2
A 9 143 801652 423.7 8531 8394 1872.2
A 15 47 777344 410.72 8531 8394 1872.2
B 5 172 15416030 9202.21 8514 8344 1674.3
B 0 189 1706702 1014.34 8514 8344 1674.3
B 0 229 1085029 643.05 8514 8344 1674.3
C 15 214 6667395 3531.13 8324 8287 1885.8
C 14 254 4804715 2543.4 8324 8287 1885.8
C 0 207 4038616 2137.16 8324 8287 1885.8
D 8 195 30075954 14989.73 8300 8047 2005.9
D 7 80 7534927 3752.37 8300 8047 2005.9
D 7 223 3239702 1611.07 8300 8047 2005.9

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