ASTROSAT CZTI

Data Quality Report

Orbit 31520

Creation date: 2024-06-27T20:29:28.344131
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_053T21_9000004592_31520cztM0_level2.evt modeM0/AS1A10_053T21_9000004592_31520cztM0_level2_quad_clean.evt
Size (bytes)549,037,44075,764,160
Size523.6 MB 72.3 MB
Events in quadrant A3,168,194477,531
Events in quadrant B4,841,611473,845
Events in quadrant C3,306,641463,742
Events in quadrant D4,899,346453,956

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134402
B0188552
C0134792
D0188252

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60892113.465265%
B60892323.810149%
C60892193.596650%
D60902764.532020%

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 6989 6089 39 39 0.56% 0.64%
B 6989 6089 4 4 0.06% 0.07%
C 6989 6089 18 18 0.26% 0.30%
D 6990 6090 122 122 1.75% 2.00%

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 0 13 268361 1747.83 751 734 153.1
A 13 254 11694 71.58 751 734 153.1
A 3 137 8003 47.47 751 734 153.1
B 6 159 1649403 11375.36 736 715 144.9
B 4 80 196526 1351.03 736 715 144.9
B 0 190 25419 170.45 736 715 144.9
C 3 233 167543 970.61 721 722 171.9
C 14 238 115038 665.12 721 722 171.9
C 0 10 107945 623.86 721 722 171.9
D 8 195 1504321 8614.33 727 708 174.5
D 13 249 241937 1382.02 727 708 174.5
D 12 79 197616 1128.1 727 708 174.5

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