ASTROSAT CZTI

Data Quality Report

Orbit 16531

Creation date: 2024-06-27T17:24:02.196650
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/AS1T03_018T01_9000002442_16531cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16531cztM0_level2_quad_clean.evt
Size (bytes)487,419,84074,292,480
Size464.8 MB 70.9 MB
Events in quadrant A3,354,800445,837
Events in quadrant B3,572,150460,964
Events in quadrant C3,349,881447,542
Events in quadrant D4,033,338431,478

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142183
B0146222
C0138092
D0162802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6653290.435894%
B6653781.172403%
C6653771.157373%
D66531101.653389%

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 7859 6655 8 8 0.10% 0.12%
B 7859 6654 3 3 0.04% 0.05%
C 7859 6655 0 0 0.00% 0.00%
D 7859 6655 114 114 1.45% 1.71%

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 15 174 168968 1007.16 827 811 167.0
A 0 226 7214 38.35 827 811 167.0
A 12 194 6024 31.22 827 811 167.0
B 15 35 56876 354.09 838 817 158.3
B 7 220 40579 251.15 838 817 158.3
B 3 209 37953 234.57 838 817 158.3
C 14 238 128345 683.93 802 809 186.5
C 3 233 87072 462.6 802 809 186.5
C 7 247 6456 30.28 802 809 186.5
D 1 52 796528 4089.29 799 777 194.6
D 10 70 81669 415.7 799 777 194.6
D 2 33 33873 170.08 799 777 194.6

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