ASTROSAT CZTI

Data Quality Report

Orbit 26479

Creation date: 2024-06-27T19:29:32.378064
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/AS1A09_104T02_9000003826_26479cztM0_level2.evt modeM0/AS1A09_104T02_9000003826_26479cztM0_level2_quad_clean.evt
Size (bytes)626,699,52096,073,920
Size597.7 MB 91.6 MB
Events in quadrant A3,708,622620,562
Events in quadrant B3,832,474628,509
Events in quadrant C3,974,878596,434
Events in quadrant D6,938,094524,176

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160700
B0163110
C0167760
D0259520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D070

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7751530.683783%
B77521061.367389%
C77521071.380289%
D775197112.527416%

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 8481 7753 0 0 0.00% 0.00%
B 8482 7753 2 2 0.02% 0.03%
C 8482 7754 1 1 0.01% 0.01%
D 8481 7753 826 826 9.74% 10.65%

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 12711 60.4 960 938 194.9
A 3 137 9103 41.89 960 938 194.9
A 0 226 8079 36.63 960 938 194.9
B 15 32 27976 146.81 957 935 184.2
B 0 230 22921 119.37 957 935 184.2
B 12 111 22540 117.3 957 935 184.2
C 3 233 241446 1106.67 915 922 217.3
C 14 238 143169 654.49 915 922 217.3
C 14 176 12714 54.26 915 922 217.3
D 7 80 2692724 12883.38 870 850 208.9
D 1 52 555268 2653.46 870 850 208.9
D 12 233 313223 1495.03 870 850 208.9

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