ASTROSAT CZTI

Data Quality Report

Orbit 36620

Creation date: 2024-06-27T21:29:15.968296
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/AS1A10_073T02_9000005226_36620cztM0_level2.evt modeM0/AS1A10_073T02_9000005226_36620cztM0_level2_quad_clean.evt
Size (bytes)517,671,36060,151,680
Size493.7 MB 57.4 MB
Events in quadrant A2,984,405372,026
Events in quadrant B3,492,805359,945
Events in quadrant C3,321,672361,571
Events in quadrant D5,498,037334,258

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123713
B0139412
C0131952
D0202222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5620540.960854%
B56202935.213523%
C56201552.758007%
D56204698.345196%

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 7414 5621 28 28 0.38% 0.50%
B 7414 5621 243 243 3.28% 4.32%
C 7414 5621 114 114 1.54% 2.03%
D 7414 5621 450 450 6.07% 8.01%

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 10 83 204362 1526.98 661 649 133.4
A 15 223 178070 1329.9 661 649 133.4
A 9 143 28319 207.41 661 649 133.4
B 5 200 649925 5194.19 649 631 125.0
B 5 255 87507 694.99 649 631 125.0
B 0 219 63425 502.34 649 631 125.0
C 0 10 396368 2662.13 641 646 148.6
C 15 214 238235 1598.33 641 646 148.6
C 12 249 113252 757.53 641 646 148.6
D 12 235 2176495 14330.14 621 602 151.8
D 2 250 349566 2298.23 621 602 151.8
D 13 249 314318 2066.09 621 602 151.8

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