ASTROSAT CZTI

Data Quality Report

Orbit 46095

Creation date: 2024-06-27T23:19:10.264001
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_9000006168_46095cztM0_level2.fits modeM0/AS1A13_077T01_9000006168_46095cztM0_level2_quad_clean.evt
Size (bytes)624,850,56092,736,000
Size595.9 MB 88.4 MB
Events in quadrant A5,663,116671,371
Events in quadrant B3,128,136696,904
Events in quadrant C3,526,983645,888
Events in quadrant D10,335,924365,529

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0207834
B0135101
C0148871
D0348731

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61341973.211607%
B61341161.891099%
C61343135.102706%
D6135283746.242869%

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 7214 6135 24 24 0.33% 0.39%
B 7214 6135 42 42 0.58% 0.68%
C 7214 6135 195 195 2.70% 3.18%
D 7215 6136 2593 2593 35.94% 42.26%

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 2699901 18483.28 698 683 146.0
A 9 191 155805 1062.22 698 683 146.0
A 3 7 92443 628.34 698 683 146.0
B 5 172 149402 1090.12 692 671 136.4
B 0 190 110920 808.07 692 671 136.4
B 0 186 61416 445.23 692 671 136.4
C 14 254 887461 5602.87 670 674 158.3
C 3 233 18380 111.87 670 674 158.3
C 12 2 7444 42.77 670 674 158.3
D 2 37 7127982 48780.6 579 563 146.1
D 1 52 542497 3709.04 579 563 146.1
D 13 171 128284 874.13 579 563 146.1

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