ASTROSAT CZTI

Data Quality Report

Orbit 30600

Creation date: 2024-06-27T20:17:29.638912
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_058T03_9000004408_30600cztM0_level2.evt modeM0/AS1A10_058T03_9000004408_30600cztM0_level2_quad_clean.evt
Size (bytes)650,378,88099,794,880
Size620.2 MB 95.2 MB
Events in quadrant A3,686,105668,147
Events in quadrant B5,478,700664,924
Events in quadrant C4,021,148632,248
Events in quadrant D6,085,614617,021

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150882
B0204512
C0162892
D0223912

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63011241.967942%
B63012634.173941%
C63014857.697191%
D63011933.063006%

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 7626 6302 0 0 0.00% 0.00%
B 7626 6302 16 16 0.21% 0.25%
C 7626 6302 58 58 0.76% 0.92%
D 7626 6302 57 57 0.75% 0.90%

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 8 192 20652 106.71 951 938 184.7
A 13 254 10831 53.55 951 938 184.7
A 3 137 8232 39.48 951 938 184.7
B 6 159 1674390 9820.78 926 907 170.4
B 0 229 75310 436.63 926 907 170.4
B 4 171 47709 274.66 926 907 170.4
C 0 10 231793 1153.81 879 891 200.1
C 14 238 204453 1017.2 879 891 200.1
C 14 254 79109 390.85 879 891 200.1
D 8 195 2154999 10163.42 917 898 211.9
D 5 222 289758 1362.89 917 898 211.9
D 2 250 104737 489.93 917 898 211.9

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