ASTROSAT CZTI

Data Quality Report

Orbit 31005

Creation date: 2024-06-27T20:22:11.628194
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_071T52_9000004480_31005cztM0_level2.evt modeM0/AS1A10_071T52_9000004480_31005cztM0_level2_quad_clean.evt
Size (bytes)555,433,92098,879,040
Size529.7 MB 94.3 MB
Events in quadrant A3,283,953665,004
Events in quadrant B5,243,083673,855
Events in quadrant C3,964,356617,240
Events in quadrant D3,909,104604,131

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135172
B0195182
C0157872
D0156492

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6215570.917136%
B62151372.204344%
C62152674.296058%
D62151151.850362%

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 7585 6216 0 0 0.00% 0.00%
B 7585 6215 10 10 0.13% 0.16%
C 7585 6215 131 131 1.73% 2.11%
D 7585 6216 102 102 1.34% 1.64%

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 12504 69.3 849 835 168.4
A 3 137 8072 42.98 849 835 168.4
A 0 226 7066 37.01 849 835 168.4
B 6 159 1797420 11373.23 848 828 158.0
B 0 190 38318 237.33 848 828 158.0
B 0 230 30919 190.49 848 828 158.0
C 0 10 644724 3464.62 799 807 185.9
C 14 238 132387 707.97 799 807 185.9
C 3 233 31258 163.84 799 807 185.9
D 8 195 538844 2852.82 803 783 188.6
D 2 250 211616 1117.85 803 783 188.6
D 12 218 62671 328.13 803 783 188.6

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