ASTROSAT CZTI

Data Quality Report

Orbit 04221

Creation date: 2024-06-27T14:38:58.522437
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/AS1G05_240T01_9000000536_04221cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04221cztM0_level2_quad_clean.evt
Size (bytes)158,915,52031,343,040
Size151.6 MB 29.9 MB
Events in quadrant A1,006,904135,511
Events in quadrant B1,481,361263,701
Events in quadrant C1,552,832250,388
Events in quadrant D590,296112,461

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02247644991680
B0-1-1
C0-1-1
D0-1-1

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B0310
C030
D0310

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04505840717
B03536029106
C03250925470
D04834945783

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A217350.230097%
B313180.255509%
C352130.085203%
D128970.543057%

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 46881 4342 0 0 0.00% 0.00%
B 46640 6253 0 0 0.00% 0.00%
C 47138 7039 0 0 0.00% 0.00%
D 47138 2570 0 0 0.00% 0.00%

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 0 50 21648 398.15 251 245 53.8
A 15 234 9901 179.63 251 245 53.8
A 0 226 2730 46.23 251 245 53.8
B 15 204 41025 568.05 361 352 71.6
B 3 0 21674 297.79 361 352 71.6
B 14 167 9968 134.3 361 352 71.6
C 9 144 20631 218.88 390 391 92.5
C 8 128 3792 36.78 390 391 92.5
C 13 61 3197 30.34 390 391 92.5
D 11 132 35953 1002.59 139 135 35.7
D 2 232 8040 221.26 139 135 35.7
D 9 85 6788 186.22 139 135 35.7

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