ASTROSAT CZTI

Data Quality Report

Orbit 45139

Creation date: 2024-06-27T23:09:51.682507
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_017T02_9000006046_45139cztM0_level2.fits modeM0/AS1A13_017T02_9000006046_45139cztM0_level2_quad_clean.evt
Size (bytes)612,118,08097,202,880
Size583.8 MB 92.7 MB
Events in quadrant A10,870,409452,902
Events in quadrant B3,039,938746,483
Events in quadrant C3,556,431697,159
Events in quadrant D4,704,325608,003

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0365451
B0132921
C0149321
D0183501

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6282261341.595033%
B6282440.700414%
C62831903.024033%
D62834346.907528%

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 7467 6282 2302 2302 30.83% 36.64%
B 7467 6283 12 12 0.16% 0.19%
C 7468 6284 168 168 2.25% 2.67%
D 7468 6284 308 308 4.12% 4.90%

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 15 223 6624763 54376.9 593 582 121.8
A 10 83 1896859 15566.25 593 582 121.8
A 13 248 57453 466.85 593 582 121.8
B 4 170 84121 586.6 720 696 142.2
B 0 186 43814 303.18 720 696 142.2
B 10 3 26692 182.79 720 696 142.2
C 14 254 783241 4763.36 698 704 164.3
C 12 2 17040 99.44 698 704 164.3
C 11 16 8063 44.79 698 704 164.3
D 13 249 658501 3840.56 680 659 171.3
D 13 29 429099 2501.28 680 659 171.3
D 1 52 202865 1180.5 680 659 171.3

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