ASTROSAT CZTI

Data Quality Report

Orbit 22801

Creation date: 2024-06-27T18:45:58.375234
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/AS1A07_054T01_9000003370_22801cztM0_level2.evt modeM0/AS1A07_054T01_9000003370_22801cztM0_level2_quad_clean.evt
Size (bytes)453,513,600125,294,400
Size432.5 MB 119.5 MB
Events in quadrant A3,004,841867,323
Events in quadrant B3,174,164859,295
Events in quadrant C3,019,128813,641
Events in quadrant D4,102,401808,889

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130141
B0134891
C0130491
D0165212

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6395350.547303%
B6395590.922596%
C6395841.313526%
D63941282.001877%

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 6946 6396 0 0 0.00% 0.00%
B 6946 6396 2 2 0.03% 0.03%
C 6946 6396 1 1 0.01% 0.02%
D 6945 6395 63 63 0.91% 0.99%

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 11 47 16087 99.49 772 757 154.1
A 13 254 11886 72.22 772 757 154.1
A 13 252 11819 71.79 772 757 154.1
B 0 190 83033 572.3 764 746 143.8
B 0 228 44279 302.77 764 746 143.8
B 0 230 39121 266.9 764 746 143.8
C 14 238 118694 692.85 734 738 170.2
C 0 207 24433 139.18 734 738 170.2
C 2 16 8230 44.01 734 738 170.2
D 1 52 505876 2808.14 747 725 179.9
D 13 172 485632 2695.6 747 725 179.9
D 7 238 71908 395.71 747 725 179.9

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