ASTROSAT CZTI

Data Quality Report

Orbit 44284

Creation date: 2024-06-27T23:01:21.351407
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_077T01_9000005984_44284cztM0_level2.fits modeM0/AS1A13_077T01_9000005984_44284cztM0_level2_quad_clean.evt
Size (bytes)511,119,360116,858,880
Size487.4 MB 111.4 MB
Events in quadrant A5,991,241765,108
Events in quadrant B3,945,087820,634
Events in quadrant C3,450,773783,399
Events in quadrant D5,013,605702,882

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0231822
B0159812
C0145652
D0194012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66935728.546242%
B66941472.195996%
C6694711.060651%
D66933385.050052%

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 7853 6693 342 342 4.36% 5.11%
B 7854 6695 53 53 0.67% 0.79%
C 7854 6695 18 18 0.23% 0.27%
D 7853 6694 246 246 3.13% 3.67%

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 1672700 10268.34 800 787 162.8
A 15 223 1099410 6747.38 800 787 162.8
A 7 3 40382 243.18 800 787 162.8
B 0 219 308378 1935.68 811 788 158.9
B 0 155 161847 1013.55 811 788 158.9
B 5 235 68112 423.67 811 788 158.9
C 3 233 115671 606.0 805 811 189.5
C 14 254 96403 504.34 805 811 189.5
C 1 3 51562 267.76 805 811 189.5
D 1 52 857068 4297.82 796 774 199.2
D 5 235 234918 1175.19 796 774 199.2
D 1 20 177675 887.88 796 774 199.2

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