ASTROSAT CZTI

Data Quality Report

Orbit 37420

Creation date: 2024-06-27T21:39:45.454625
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/AS1A09_002T01_9000005322_37420cztM0_level2.evt modeM0/AS1A09_002T01_9000005322_37420cztM0_level2_quad_clean.evt
Size (bytes)394,090,56087,171,840
Size375.8 MB 83.1 MB
Events in quadrant A2,894,470571,940
Events in quadrant B2,815,589586,805
Events in quadrant C2,929,153583,276
Events in quadrant D2,961,614552,901

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115063
B0112962
C0114212
D0118522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4920460.934959%
B4920511.036585%
C4920781.585366%
D4920290.589431%

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 7073 4921 19 19 0.27% 0.39%
B 7073 4921 28 28 0.40% 0.57%
C 7073 4921 65 65 0.92% 1.32%
D 7073 4921 27 27 0.38% 0.55%

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 264549 2184.8 610 601 120.8
A 15 222 100984 830.91 610 601 120.8
A 12 189 93714 770.73 610 601 120.8
B 5 255 151386 1355.64 608 594 111.2
B 5 172 118810 1062.78 608 594 111.2
B 0 155 52509 466.72 608 594 111.2
C 14 254 244467 1752.21 606 612 139.2
C 15 214 211049 1512.09 606 612 139.2
C 0 10 86006 613.6 606 612 139.2
D 12 227 204977 1410.72 604 590 144.9
D 12 235 168514 1159.04 604 590 144.9
D 2 250 68805 470.83 604 590 144.9

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