ASTROSAT CZTI

Data Quality Report

Orbit 23898

Creation date: 2024-06-27T18:59:53.054022
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/AS1A07_142T01_9000003540_23898cztM0_level2.evt modeM0/AS1A07_142T01_9000003540_23898cztM0_level2_quad_clean.evt
Size (bytes)599,224,32067,449,600
Size571.5 MB 64.3 MB
Events in quadrant A3,492,402424,475
Events in quadrant B3,587,120426,486
Events in quadrant C3,801,985395,074
Events in quadrant D6,848,212365,540

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143012
B0145022
C0150322
D0248002

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6172941.523007%
B61721151.863253%
C61722704.374595%
D6172159725.874919%

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 7552 6173 0 0 0.00% 0.00%
B 7552 6173 3 3 0.04% 0.05%
C 7552 6173 58 58 0.77% 0.94%
D 7552 6172 902 902 11.94% 14.61%

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 13 254 10138 51.38 907 892 180.0
A 0 226 7854 38.69 907 892 180.0
A 3 137 6796 32.81 907 892 180.0
B 15 33 39929 240.24 895 880 162.5
B 12 111 18101 105.95 895 880 162.5
B 5 172 17892 104.66 895 880 162.5
C 0 10 285530 1502.32 831 839 189.5
C 7 247 144623 758.75 831 839 189.5
C 14 238 135838 712.39 831 839 189.5
D 12 218 3097350 17926.5 722 704 172.7
D 7 238 343282 1983.19 722 704 172.7
D 12 250 250478 1445.94 722 704 172.7

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