ASTROSAT CZTI

Data Quality Report

Orbit 20221010_A11_024T01_9000005358_level2

Creation date: 2022-10-22T12:10:02.658628
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/AS1A11_024T01_9000005358cztM0_level2.fits modeM0/AS1A11_024T01_9000005358cztM0_level2_quad_clean.evt
Size (bytes)617,022,720669,240,000
Size588.4 MB 638.2 MB
Events in quadrant A3,755,6424,138,011
Events in quadrant B3,575,4524,072,798
Events in quadrant C3,718,8124,035,026
Events in quadrant D3,200,4043,586,877

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02450
B02450
C02450
D02460

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013200
B013200
C013200
D013200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01429230
B01544050
C01389970
D01615500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A646882000.309176%
B6468816062.482686%
C646882540.392654%
D6468815242.355924%

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 88645 64687 0 0 0.00% 0.00%
B 88645 64635 0 0 0.00% 0.00%
C 88645 64671 0 0 0.00% 0.00%
D 88645 64673 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 3133 9.28 982 924 238.1
A 9 19 3131 9.27 982 924 238.1
A 0 29 3051 8.93 982 924 238.1
B 2 9 3062 11.71 947 904 184.3
B 3 80 2820 10.39 947 904 184.3
B 5 128 2564 9.01 947 904 184.3
C 1 81 3036 8.44 984 925 250.1
C 1 80 2943 8.07 984 925 250.1
C 3 187 2559 6.53 984 925 250.1
D 10 189 2364 6.28 915 836 243.1
D 7 3 2353 6.24 915 836 243.1
D 6 62 2287 5.97 915 836 243.1

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