ASTROSAT CZTI

Data Quality Report

Orbit 21525

Creation date: 2024-06-27T18:28:59.380953
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_144T02_9000003176_21525cztM0_level2.evt modeM0/AS1A05_144T02_9000003176_21525cztM0_level2_quad_clean.evt
Size (bytes)456,621,120101,934,720
Size435.5 MB 97.2 MB
Events in quadrant A3,141,797671,769
Events in quadrant B3,210,867675,984
Events in quadrant C3,110,442653,948
Events in quadrant D3,936,708644,817

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130562
B0132592
C0129992
D0159032

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6314400.633513%
B6315490.775930%
C6315500.791766%
D63151171.852732%

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 7559 6315 0 0 0.00% 0.00%
B 7560 6316 5 5 0.07% 0.08%
C 7560 6316 0 0 0.00% 0.00%
D 7560 6316 75 75 0.99% 1.19%

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 48 34115 207.44 805 791 160.6
A 13 254 10508 60.49 805 791 160.6
A 0 226 7108 39.32 805 791 160.6
B 3 64 41557 273.3 793 775 149.2
B 0 230 20249 130.5 793 775 149.2
B 0 190 18591 119.39 793 775 149.2
C 14 238 123450 707.14 758 765 173.5
C 3 233 21535 119.72 758 765 173.5
C 0 10 11743 63.28 758 765 173.5
D 1 52 394272 2000.69 769 750 196.7
D 7 38 237700 1204.67 769 750 196.7
D 14 35 221498 1122.3 769 750 196.7

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