ASTROSAT CZTI

Data Quality Report

Orbit 50750

Creation date: 2025-02-14T20:06:08.941899
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/AS1C07_001T01_9000006450_50750cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50750cztM0_level2_quad_clean.evt
Size (bytes)591,888,96085,239,360
Size564.5 MB 81.3 MB
Events in quadrant A7,375,944524,395
Events in quadrant B3,473,494627,724
Events in quadrant C5,239,843510,529
Events in quadrant D5,345,564489,964

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A026411223
B01466788
C019812112
D020221107

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A612886314.082898%
B61381021.661779%
C61405559.039088%
D61364938.034550%

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 7052 6134 858 858 12.17% 13.99%
B 7062 6144 36 36 0.51% 0.59%
C 7064 6150 516 516 7.30% 8.39%
D 7060 6142 470 470 6.66% 7.65%

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 4 4 3899422 24632.44 629 613 158.3
A 4 3 221044 1392.67 629 613 158.3
A 6 195 129627 815.1 629 613 158.3
B 7 0 278437 1998.29 647 624 139.0
B 10 60 151536 1085.5 647 624 139.0
B 10 247 89490 639.21 647 624 139.0
C 15 179 987794 5917.81 609 604 166.8
C 0 209 460595 2757.46 609 604 166.8
C 13 3 233576 1396.57 609 604 166.8
D 1 47 923742 5365.77 616 595 172.0
D 2 249 392659 2278.86 616 595 172.0
D 8 176 294441 1707.97 616 595 172.0

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