ASTROSAT CZTI

Data Quality Report

Orbit 31140

Creation date: 2024-06-27T20:23:51.080780
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/AS1A10_071T66_9000004498_31140cztM0_level2.evt modeM0/AS1A10_071T66_9000004498_31140cztM0_level2_quad_clean.evt
Size (bytes)649,471,68094,296,960
Size619.4 MB 89.9 MB
Events in quadrant A3,506,643603,833
Events in quadrant B5,853,500599,200
Events in quadrant C4,281,752576,825
Events in quadrant D5,527,937561,407

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0151982
B0227762
C0173472
D0215502

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7386640.866504%
B73871682.274266%
C73872453.316637%
D73871752.369027%

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 7731 7387 3 3 0.04% 0.04%
B 7732 7388 7 7 0.09% 0.09%
C 7732 7388 67 67 0.87% 0.91%
D 7732 7388 96 96 1.24% 1.30%

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 14673 75.14 905 883 183.5
A 11 29 11378 57.19 905 883 183.5
A 3 137 9217 45.41 905 883 183.5
B 6 159 2119969 12022.07 897 873 176.3
B 0 190 107116 602.74 897 873 176.3
B 0 230 32241 177.96 897 873 176.3
C 15 208 431758 2094.62 865 870 205.7
C 0 10 291226 1411.47 865 870 205.7
C 14 238 137927 666.26 865 870 205.7
D 8 195 1856700 8126.81 863 846 228.4
D 13 249 274426 1198.01 863 846 228.4
D 2 120 38959 166.9 863 846 228.4

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