ASTROSAT CZTI

Data Quality Report

Orbit 17135

Creation date: 2024-06-27T17:32:36.218277
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_056T01_9000002540_17135cztM0_level2.evt modeM0/AS1A05_056T01_9000002540_17135cztM0_level2_quad_clean.evt
Size (bytes)522,976,320101,373,120
Size498.7 MB 96.7 MB
Events in quadrant A3,191,880671,409
Events in quadrant B3,267,107688,070
Events in quadrant C5,897,431621,659
Events in quadrant D3,033,354627,422

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138272
B0139892
C0225332
D0136602

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6620300.453172%
B6620360.543807%
C66202593.912387%
D6620120.181269%

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 7810 6621 0 0 0.00% 0.00%
B 7810 6621 1 1 0.01% 0.02%
C 7810 6621 40 40 0.51% 0.60%
D 7810 6621 2 2 0.03% 0.03%

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 12 189 32246 189.14 823 806 166.2
A 0 226 7189 38.4 823 806 166.2
A 3 137 6158 32.2 823 806 166.2
B 0 229 23049 139.84 826 806 159.1
B 12 111 18918 113.87 826 806 159.1
B 11 111 16275 97.25 826 806 159.1
C 3 233 2721854 15177.18 771 776 179.3
C 14 238 120008 665.03 771 776 179.3
C 5 112 44899 246.1 771 776 179.3
D 5 222 69908 364.31 785 764 189.8
D 2 234 23876 121.77 785 764 189.8
D 14 226 7795 37.05 785 764 189.8

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