ASTROSAT CZTI

Data Quality Report

Orbit 20151110_P01_127T01_9000000090_level2

Creation date: 2021-08-30T17:32:35.363783
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_127T01_9000000090cztM0_level2_bc.evt modeM0/AS1P01_127T01_9000000090cztM0_level2_quad_clean.evt
Size (bytes)241,035,840107,714,880
Size229.9 MB 102.7 MB
Events in quadrant A1,264,159699,415
Events in quadrant B1,433,261697,689
Events in quadrant C1,220,398705,782
Events in quadrant D2,886,194660,654

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0289560
B0295360
C0278840
D0329850

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A716670.097684%
B7166430.600056%
C716630.041864%
D71653104.326588%

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 14612 7165 0 0 0.00% 0.00%
B 14612 7165 2 2 0.01% 0.03%
C 14612 7165 0 0 0.00% 0.00%
D 14612 7164 53 53 0.36% 0.74%

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 0 238 38743 593.02 296 290 64.8
A 0 69 17691 268.36 296 290 64.8
A 13 160 13207 199.2 296 290 64.8
B 0 220 78778 1391.64 298 290 56.4
B 5 249 40377 710.77 298 290 56.4
B 5 191 34592 608.2 298 290 56.4
C 15 241 9775 144.82 296 291 65.5
C 5 17 6559 95.71 296 291 65.5
C 10 17 6346 92.46 296 291 65.5
D 1 4 672393 10357.44 287 279 64.9
D 13 221 185695 2857.31 287 279 64.9
D 13 216 166195 2556.81 287 279 64.9

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