ASTROSAT CZTI

Data Quality Report

Orbit 18326

Creation date: 2024-06-27T17:48:23.547406
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/AS1A06_006T01_9000002720_18326cztM0_level2.evt modeM0/AS1A06_006T01_9000002720_18326cztM0_level2_quad_clean.evt
Size (bytes)501,955,20080,161,920
Size478.7 MB 76.4 MB
Events in quadrant A3,315,270503,942
Events in quadrant B3,620,406506,122
Events in quadrant C3,644,711495,914
Events in quadrant D4,192,492480,106

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134712
B0144292
C0145512
D0162492

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63241001.581278%
B63231582.498814%
C63231482.340661%
D63232994.728768%

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 7534 6325 2 2 0.03% 0.03%
B 7533 6324 32 32 0.42% 0.51%
C 7533 6324 0 0 0.00% 0.00%
D 7533 6324 121 121 1.61% 1.91%

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 15 174 45499 262.94 847 830 169.9
A 4 2 11605 63.43 847 830 169.9
A 0 226 7614 39.93 847 830 169.9
B 7 220 189302 1192.15 842 824 158.1
B 4 48 76271 477.21 842 824 158.1
B 0 197 35814 221.32 842 824 158.1
C 3 233 351290 1860.76 812 819 188.3
C 14 238 127049 670.2 812 819 188.3
C 13 61 5787 26.38 812 819 188.3
D 1 52 743413 3744.21 818 795 198.3
D 13 168 110708 554.17 818 795 198.3
D 7 238 101954 510.03 818 795 198.3

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