ASTROSAT CZTI

Data Quality Report

Orbit 08584

Creation date: 2024-06-27T15:34:36.875965
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/AS1A03_102T01_9000001202_08584cztM0_level2.evt modeM0/AS1A03_102T01_9000001202_08584cztM0_level2_quad_clean.evt
Size (bytes)429,505,920105,105,600
Size409.6 MB 100.2 MB
Events in quadrant A3,048,368678,442
Events in quadrant B3,307,810705,171
Events in quadrant C2,919,184686,024
Events in quadrant D3,281,330651,360

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138313
B0142352
C0135182
D0145902

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6625550.830189%
B6625590.890566%
C6625280.422642%
D6625761.147170%

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 7845 6626 13 13 0.17% 0.20%
B 7845 6626 2 2 0.03% 0.03%
C 7845 6626 0 0 0.00% 0.00%
D 7845 6626 55 55 0.70% 0.83%

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 15 223 65295 423.19 759 742 152.5
A 15 239 33205 212.82 759 742 152.5
A 13 248 11629 71.37 759 742 152.5
B 10 252 102155 696.08 776 757 145.7
B 0 214 94714 645.0 776 757 145.7
B 0 219 27542 183.87 776 757 145.7
C 13 61 5743 28.95 747 747 172.6
C 8 222 3295 14.76 747 747 172.6
C 14 67 3075 13.49 747 747 172.6
D 12 233 280689 1438.21 730 712 194.7
D 1 52 69632 354.03 730 712 194.7
D 7 71 56376 285.94 730 712 194.7

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