ASTROSAT CZTI

Data Quality Report

Orbit 24851

Creation date: 2024-06-27T19:10:37.988779
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/AS1A08_003T06_9000003636_24851cztM0_level2.evt modeM0/AS1A08_003T06_9000003636_24851cztM0_level2_quad_clean.evt
Size (bytes)474,416,64089,409,600
Size452.4 MB 85.3 MB
Events in quadrant A3,399,335581,201
Events in quadrant B3,331,159599,989
Events in quadrant C3,539,562551,107
Events in quadrant D3,666,130531,717

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139302
B0137172
C0147382
D0149802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6355671.054288%
B6355340.535012%
C6355560.881196%
D6355791.243116%

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 7601 6357 49 49 0.64% 0.77%
B 7601 6357 6 6 0.08% 0.09%
C 7601 6357 0 0 0.00% 0.00%
D 7601 6357 55 55 0.72% 0.87%

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 6 16 197658 1187.86 829 815 165.7
A 13 254 9976 55.28 829 815 165.7
A 3 137 7328 39.3 829 815 165.7
B 10 251 61110 383.71 832 812 157.1
B 12 111 18719 113.95 832 812 157.1
B 11 111 17007 103.06 832 812 157.1
C 10 91 150112 809.92 790 798 184.4
C 7 247 141823 764.95 790 798 184.4
C 14 238 128894 694.82 790 798 184.4
D 1 52 651616 3396.03 787 765 191.7
D 2 234 22859 115.28 787 765 191.7
D 8 195 12648 62.0 787 765 191.7

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