ASTROSAT CZTI

Data Quality Report

Orbit 22148

Creation date: 2024-06-27T18:37:27.206848
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/AS1T03_145T01_9000003278_22148cztM0_level2.evt modeM0/AS1T03_145T01_9000003278_22148cztM0_level2_quad_clean.evt
Size (bytes)466,248,96097,142,400
Size444.6 MB 92.6 MB
Events in quadrant A3,363,725628,813
Events in quadrant B3,453,425637,389
Events in quadrant C3,470,728608,512
Events in quadrant D3,381,183604,305

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139852
B0142772
C0144182
D0142012

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66341291.944528%
B66341672.517335%
C66342303.466988%
D66341281.929454%

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 7659 6635 0 0 0.00% 0.00%
B 7659 6635 3 3 0.04% 0.05%
C 7659 6635 13 13 0.17% 0.20%
D 7659 6635 5 5 0.07% 0.08%

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 10389 54.9 872 856 173.6
A 0 226 7507 38.31 872 856 173.6
A 3 137 7313 37.19 872 856 173.6
B 3 64 33183 196.6 866 843 164.5
B 12 111 19572 113.86 866 843 164.5
B 11 111 17693 102.43 866 843 164.5
C 14 238 133754 697.24 829 835 190.6
C 10 22 99414 517.11 829 835 190.6
C 13 61 5840 26.25 829 835 190.6
D 1 52 83391 404.8 850 827 204.0
D 2 234 29537 140.76 850 827 204.0
D 2 120 26081 123.82 850 827 204.0

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