ASTROSAT CZTI

Data Quality Report

Orbit 17143

Creation date: 2024-06-27T17:32:51.216247
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/AS1C04_004T01_9000002542_17143cztM0_level2.evt modeM0/AS1C04_004T01_9000002542_17143cztM0_level2_quad_clean.evt
Size (bytes)521,072,64097,470,720
Size496.9 MB 93.0 MB
Events in quadrant A3,667,339609,963
Events in quadrant B3,722,210623,632
Events in quadrant C4,200,128594,538
Events in quadrant D3,666,891587,102

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160333
B0161363
C0175073
D0163493

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77081932.503892%
B77092353.048385%
C77092403.113244%
D77091251.621481%

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 8123 7711 1 1 0.01% 0.01%
B 8124 7712 0 0 0.00% 0.00%
C 8124 7712 0 0 0.00% 0.00%
D 8124 7712 20 20 0.25% 0.26%

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 12 189 32303 163.79 941 919 191.6
A 3 254 11989 57.77 941 919 191.6
A 0 226 8141 37.69 941 919 191.6
B 4 173 38253 204.12 938 912 182.9
B 12 111 22253 116.66 938 912 182.9
B 11 111 19388 101.0 938 912 182.9
C 3 233 557606 2631.79 896 899 211.5
C 14 238 137495 645.75 896 899 211.5
C 13 61 6356 25.8 896 899 211.5
D 1 52 97991 432.52 916 888 224.5
D 10 70 35224 152.94 916 888 224.5
D 13 249 32312 139.97 916 888 224.5

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