ASTROSAT CZTI

Data Quality Report

Orbit 43979

Creation date: 2024-06-27T22:57:54.032270
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_065T06_9000005924_43979cztM0_level2.fits modeM0/AS1A13_065T06_9000005924_43979cztM0_level2_quad_clean.evt
Size (bytes)662,863,68098,219,520
Size632.2 MB 93.7 MB
Events in quadrant A12,459,328256,412
Events in quadrant B3,582,106798,565
Events in quadrant C3,238,566762,509
Events in quadrant D4,724,550679,035

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0417822
B0153622
C0144012
D0189232

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6840468268.450292%
B68401802.631579%
C6841460.672416%
D68413264.765385%

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 8970 6842 3387 3387 37.76% 49.50%
B 8970 6842 60 60 0.67% 0.88%
C 8971 6843 5 5 0.06% 0.07%
D 8971 6843 211 211 2.35% 3.08%

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 10513852 154432.35 328 322 68.1
A 10 83 552023 8103.89 328 322 68.1
A 14 238 106371 1557.74 328 322 68.1
B 5 172 326391 2070.34 792 767 157.3
B 0 213 28688 177.52 792 767 157.3
B 0 200 22649 139.13 792 767 157.3
C 14 254 107016 574.26 782 788 185.0
C 2 14 25392 133.01 782 788 185.0
C 15 157 23330 121.86 782 788 185.0
D 5 235 509739 2669.95 763 743 190.6
D 4 222 427381 2237.94 763 743 190.6
D 1 52 260053 1360.21 763 743 190.6

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