ASTROSAT CZTI

Data Quality Report

Orbit 52111

Creation date: 2025-05-17T10:13:39.183592
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/AS1C09_011T07_9000006470_52111cztM0_level2.fits modeM0/AS1C09_011T07_9000006470_52111cztM0_level2_quad_clean.evt
Size (bytes)721,846,08056,543,040
Size688.4 MB 53.9 MB
Events in quadrant A2,804,515488,292
Events in quadrant B4,287,527489,698
Events in quadrant C6,641,339358,315
Events in quadrant D12,589,09016,213

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01042
B01031
C01031
D01042

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A011915130
B016374168
C023443118
D041514663

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5128681.326053%
B51274939.615760%
C5135153029.795521%
D5111497797.378204%

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 5143 5137 49 49 0.95% 0.95%
B 5138 5134 258 258 5.02% 5.03%
C 5147 5141 1095 1095 21.27% 21.30%
D 5131 5114 4443 4443 86.59% 86.88%

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 3 130 197028 1417.85 556 540 138.6
A 4 3 161568 1161.97 556 540 138.6
A 5 240 56911 406.77 556 540 138.6
B 8 3 589309 5084.26 539 519 115.8
B 12 32 409805 3534.22 539 519 115.8
B 10 44 302991 2611.87 539 519 115.8
C 15 224 3585430 27146.3 475 472 132.1
C 2 239 217791 1645.6 475 472 132.1
C 13 3 154771 1168.39 475 472 132.1
D 6 42 9571308 160293.99 204 194 59.7
D 15 94 847702 14193.8 204 194 59.7
D 7 60 414778 6943.32 204 194 59.7

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