ASTROSAT CZTI

Data Quality Report

Orbit 19555

Creation date: 2024-06-27T18:04:01.486298
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_115T02_9000002906_19555cztM0_level2.evt modeM0/AS1A05_115T02_9000002906_19555cztM0_level2_quad_clean.evt
Size (bytes)486,826,56066,836,160
Size464.3 MB 63.7 MB
Events in quadrant A3,451,385405,668
Events in quadrant B3,595,613408,633
Events in quadrant C3,504,910380,898
Events in quadrant D3,750,127374,498

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139362
B0144162
C0140822
D0151482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6506530.814633%
B6506961.475561%
C6506771.183523%
D6506751.152782%

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 7831 6506 0 0 0.00% 0.00%
B 7831 6506 20 20 0.26% 0.31%
C 7831 6506 0 0 0.00% 0.00%
D 7831 6507 40 40 0.51% 0.61%

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 13 254 9362 47.72 895 883 177.7
A 0 226 7821 39.05 895 883 177.7
A 3 137 6621 32.3 895 883 177.7
B 7 220 50183 298.82 886 867 165.0
B 3 64 45992 273.42 886 867 165.0
B 0 198 25115 146.92 886 867 165.0
C 14 238 135085 694.97 835 842 193.2
C 3 233 52681 268.37 835 842 193.2
C 9 221 28278 142.03 835 842 193.2
D 12 233 220584 1083.31 847 825 202.9
D 1 52 219354 1077.25 847 825 202.9
D 12 218 48708 236.04 847 825 202.9

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