ASTROSAT CZTI

Data Quality Report

Orbit 21927

Creation date: 2024-06-27T18:34:03.565597
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_100T03_9000003242_21927cztM0_level2.evt modeM0/AS1A07_100T03_9000003242_21927cztM0_level2_quad_clean.evt
Size (bytes)650,612,160110,963,520
Size620.5 MB 105.8 MB
Events in quadrant A3,004,750805,804
Events in quadrant B7,026,986699,635
Events in quadrant C3,053,881780,356
Events in quadrant D6,217,089659,922

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127401
B0249353
C0127931
D0224851

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5920851.435811%
B5919161427.268120%
C59191021.723264%
D5920115019.425676%

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 7150 5920 0 0 0.00% 0.00%
B 7149 5919 1372 1372 19.19% 23.18%
C 7149 5919 0 0 0.00% 0.00%
D 7150 5920 1065 1065 14.90% 17.99%

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 13 254 11019 66.52 775 759 154.2
A 3 1 9995 59.88 775 759 154.2
A 0 226 6949 40.13 775 759 154.2
B 0 85 4020495 31725.12 686 670 126.7
B 3 64 191577 1506.67 686 670 126.7
B 0 197 59395 463.47 686 670 126.7
C 14 238 120119 698.86 744 750 170.8
C 10 22 30858 176.27 744 750 170.8
C 13 61 5180 25.94 744 750 170.8
D 7 238 2623683 16494.73 666 647 159.0
D 12 235 626379 3934.86 666 647 159.0
D 1 52 373705 2345.94 666 647 159.0

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