ASTROSAT CZTI

Data Quality Report

Orbit 17227

Creation date: 2024-06-27T17:33:49.951560
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/AS1A05_185T04_9000002548_17227cztM0_level2.evt modeM0/AS1A05_185T04_9000002548_17227cztM0_level2_quad_clean.evt
Size (bytes)489,084,48093,597,120
Size466.4 MB 89.3 MB
Events in quadrant A3,237,003605,855
Events in quadrant B3,582,549604,839
Events in quadrant C3,925,823573,633
Events in quadrant D3,594,309565,827

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143633
B0153132
C0160872
D0157642

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6954400.575209%
B69551211.739756%
C69551602.300503%
D69551211.739756%

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 8984 6956 0 0 0.00% 0.00%
B 8985 6957 17 17 0.19% 0.24%
C 8985 6957 0 0 0.00% 0.00%
D 8985 6957 71 71 0.79% 1.02%

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 0 226 7356 38.37 841 822 170.3
A 12 194 6101 31.0 841 822 170.3
A 3 137 6051 30.7 841 822 170.3
B 7 220 89573 554.7 840 819 160.0
B 0 189 82801 512.37 840 819 160.0
B 0 229 43337 265.73 840 819 160.0
C 3 233 659439 3456.59 806 811 190.5
C 14 238 122721 639.8 806 811 190.5
C 13 61 5682 25.56 806 811 190.5
D 13 189 157416 788.79 815 790 198.6
D 7 38 141853 710.42 815 790 198.6
D 10 70 132761 664.63 815 790 198.6

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