ASTROSAT CZTI

Data Quality Report

Orbit 04806

Creation date: 2024-06-27T14:47:15.222244
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_002T03_9000000608_04806cztM0_level2.evt modeM0/AS1G05_002T03_9000000608_04806cztM0_level2_quad_clean.evt
Size (bytes)434,874,24075,582,720
Size414.7 MB 72.1 MB
Events in quadrant A3,072,270466,020
Events in quadrant B3,268,067467,390
Events in quadrant C2,865,128469,250
Events in quadrant D3,536,276446,267

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134303
B0139172
C0129972
D0148382

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6301520.825266%
B6301470.745913%
C630170.111093%
D63011802.856689%

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 7611 6302 12 12 0.16% 0.19%
B 7611 6302 8 8 0.11% 0.13%
C 7611 6302 0 0 0.00% 0.00%
D 7611 6302 130 130 1.71% 2.06%

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 76758 491.34 757 743 154.7
A 13 251 35507 224.7 757 743 154.7
A 8 15 27676 174.09 757 743 154.7
B 15 204 171342 1157.19 765 747 147.4
B 8 3 41150 274.06 765 747 147.4
B 15 54 25922 170.77 765 747 147.4
C 12 4 21851 124.61 728 733 169.5
C 13 61 6160 32.02 728 733 169.5
C 3 202 1842 6.54 728 733 169.5
D 13 235 542482 3124.63 717 698 173.4
D 2 136 142803 819.56 717 698 173.4
D 2 234 47420 269.46 717 698 173.4

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