ASTROSAT CZTI

Data Quality Report

Orbit 26273

Creation date: 2024-06-27T19:26:52.772280
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/AS1A09_079T03_9000003790_26273cztM0_level2.evt modeM0/AS1A09_079T03_9000003790_26273cztM0_level2_quad_clean.evt
Size (bytes)487,918,080105,589,440
Size465.3 MB 100.7 MB
Events in quadrant A3,645,662674,520
Events in quadrant B3,341,913714,708
Events in quadrant C4,124,244680,422
Events in quadrant D3,213,520664,994

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150790
B0141150
C0164740
D0141470

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66401281.927711%
B6640450.677711%
C66403695.557229%
D6640530.798193%

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 7925 6642 93 93 1.17% 1.40%
B 7925 6642 0 0 0.00% 0.00%
C 7925 6642 172 172 2.17% 2.59%
D 7925 6642 34 34 0.43% 0.51%

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 450225 2736.09 828 812 164.3
A 13 254 11033 62.23 828 812 164.3
A 3 137 7224 39.04 828 812 164.3
B 12 111 18438 111.88 844 825 157.4
B 11 111 16136 97.26 844 825 157.4
B 7 219 15645 94.14 844 825 157.4
C 4 254 841289 4542.09 796 801 185.0
C 14 238 127723 685.9 796 801 185.0
C 3 233 38945 206.13 796 801 185.0
D 1 52 109475 572.14 806 788 190.0
D 2 234 27130 138.67 806 788 190.0
D 14 35 13037 64.48 806 788 190.0

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
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter