ASTROSAT CZTI

Data Quality Report

Orbit 46900

Creation date: 2024-06-27T23:29:02.537436
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_068T05_9000006280_46900cztM0_level2.fits modeM0/AS1A13_068T05_9000006280_46900cztM0_level2_quad_clean.evt
Size (bytes)789,595,200124,329,600
Size753.0 MB 118.6 MB
Events in quadrant A7,785,887895,953
Events in quadrant B11,217,986627,264
Events in quadrant C3,746,344888,969
Events in quadrant D5,832,738772,308

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01680
B01680
C01680
D01680

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0284101
B0391060
C0174650
D0235290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A83391441.726826%
B8339279433.505216%
C8340200.239808%
D83405726.858513%

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 8339 8339 4 4 0.05% 0.05%
B 8339 8339 2061 2061 24.72% 24.72%
C 8340 8340 9 9 0.11% 0.11%
D 8340 8340 489 489 5.86% 5.86%

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 10 83 4053587 20570.76 939 917 197.0
A 13 248 34338 169.64 939 917 197.0
A 7 3 29044 142.77 939 917 197.0
B 3 112 7640683 47475.6 810 784 160.9
B 12 3 109726 676.98 810 784 160.9
B 15 36 73863 454.12 810 784 160.9
C 12 2 63466 285.15 935 938 219.3
C 12 250 9070 37.08 935 938 219.3
C 3 233 8974 36.65 935 938 219.3
D 2 249 1025099 4549.83 901 873 225.1
D 13 249 832968 3696.34 901 873 225.1
D 1 52 310193 1374.06 901 873 225.1

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