ASTROSAT CZTI

Data Quality Report

Orbit 40911

Creation date: 2024-06-27T22:22:05.753616
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/AS1A12_102T01_9000005576_40911cztM0_level2.fits modeM0/AS1A12_102T01_9000005576_40911cztM0_level2_quad_clean.evt
Size (bytes)293,126,40079,796,160
Size279.5 MB 76.1 MB
Events in quadrant A2,469,791538,092
Events in quadrant B2,765,539529,875
Events in quadrant C2,330,809537,997
Events in quadrant D2,924,374486,321

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0940
B0940
C0940
D0940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102802
B0115202
C098782
D0119102

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4613120.260134%
B46132475.354433%
C4613631.365706%
D46131583.425103%

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 6764 4614 5 5 0.07% 0.11%
B 6764 4614 196 196 2.90% 4.25%
C 6764 4614 50 50 0.74% 1.08%
D 6764 4614 126 126 1.86% 2.73%

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 466076 4611.35 498 490 101.0
A 12 189 25294 245.67 498 490 101.0
A 7 3 15738 151.02 498 490 101.0
B 5 32 662905 6984.02 492 478 94.8
B 5 255 111483 1170.33 492 478 94.8
B 0 190 28455 294.96 492 478 94.8
C 15 214 196158 1700.07 498 502 115.1
C 0 10 162182 1404.85 498 502 115.1
C 14 254 24472 208.28 498 502 115.1
D 12 233 311173 2656.89 486 474 116.9
D 13 249 234603 2002.11 486 474 116.9
D 12 79 150937 1286.66 486 474 116.9

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