ASTROSAT CZTI

Data Quality Report

Orbit 20240518_A13_092T09_9000006258_level2

Creation date: 2024-05-20T10:21:34.739593
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/AS1A13_092T09_9000006258cztM0_level2.fits modeM0/AS1A13_092T09_9000006258cztM0_level2_quad_clean.evt
Size (bytes)605,586,240594,576,000
Size577.5 MB 567.0 MB
Events in quadrant A3,495,7403,410,352
Events in quadrant B3,453,5983,510,377
Events in quadrant C3,598,2703,386,316
Events in quadrant D2,986,1942,896,504

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02461890
B01595670
C01473490
D02021010

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0850
B0850
C0850
D0850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A014260
B014260
C014240
D014260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6999226153.736141%
B7002318142.590577%
C700326580.939570%
D7003048906.982722%

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 78704 70069 0 0 0.00% 0.00%
B 78704 70060 0 0 0.00% 0.00%
C 78704 70074 0 0 0.00% 0.00%
D 78704 69998 0 0 0.00% 0.00%

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 7 110 2875 8.68 910 848 233.7
A 14 95 2707 7.96 910 848 233.7
A 0 29 2650 7.71 910 848 233.7
B 2 9 3300 13.46 912 867 180.8
B 2 8 2600 9.59 912 867 180.8
B 3 17 2591 9.54 912 867 180.8
C 3 202 2810 7.81 951 878 247.4
C 3 203 2685 7.3 951 878 247.4
C 1 80 2572 6.85 951 878 247.4
D 15 63 2186 5.89 858 776 239.4
D 10 189 2172 5.83 858 776 239.4
D 7 3 2163 5.79 858 776 239.4

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