ASTROSAT CZTI

Data Quality Report

Orbit 17850

Creation date: 2024-06-27T17:41:39.962790
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/AS1A05_085T01_9000002658_17850cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17850cztM0_level2_quad_clean.evt
Size (bytes)491,780,160101,741,760
Size469.0 MB 97.0 MB
Events in quadrant A3,455,069651,571
Events in quadrant B3,553,757657,539
Events in quadrant C3,609,927631,339
Events in quadrant D3,766,030619,664

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153392
B0154402
C0154082
D0163972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7487440.587685%
B7487771.028449%
C7488991.322115%
D7488620.827991%

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 9227 7489 0 0 0.00% 0.00%
B 9227 7489 0 0 0.00% 0.00%
C 9228 7490 0 0 0.00% 0.00%
D 9228 7490 25 25 0.27% 0.33%

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 0 226 7698 37.59 898 880 181.4
A 3 137 6865 33.0 898 880 181.4
A 12 194 6357 30.2 898 880 181.4
B 12 111 21042 115.91 903 880 173.9
B 11 111 17989 98.36 903 880 173.9
B 14 111 15527 84.21 903 880 173.9
C 14 238 132410 645.69 870 875 203.7
C 3 233 34651 165.8 870 875 203.7
C 5 218 32650 155.98 870 875 203.7
D 7 238 409086 1919.84 873 847 212.6
D 10 70 30513 139.51 873 847 212.6
D 2 234 28882 131.84 873 847 212.6

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