ASTROSAT CZTI

Data Quality Report

Orbit 39206

Creation date: 2024-06-27T22:01:48.356894
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_054T04_9000005446_39206cztM0_level2.fits modeM0/AS1A12_054T04_9000005446_39206cztM0_level2_quad_clean.evt
Size (bytes)527,126,40098,723,520
Size502.7 MB 94.2 MB
Events in quadrant A3,373,660705,664
Events in quadrant B2,904,821710,002
Events in quadrant C2,914,857679,084
Events in quadrant D9,828,958454,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140563
B0131562
C0127812
D0335732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6308641.014585%
B6308550.871909%
C630880.126823%
D6308218734.670260%

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 8964 6310 36 36 0.40% 0.57%
B 8964 6310 31 31 0.35% 0.49%
C 8964 6310 5 5 0.06% 0.08%
D 8964 6310 1850 1850 20.64% 29.32%

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 488268 3472.66 687 674 140.4
A 13 248 191256 1357.33 687 674 140.4
A 9 143 30244 210.6 687 674 140.4
B 5 172 158006 1198.67 681 661 131.3
B 0 190 47254 354.95 681 661 131.3
B 12 111 16639 121.72 681 661 131.3
C 15 214 261927 1662.88 668 671 157.1
C 4 0 22475 138.78 668 671 157.1
C 0 10 12527 75.46 668 671 157.1
D 12 235 6887185 47930.39 580 562 143.7
D 5 222 225109 1562.83 580 562 143.7
D 2 153 152299 1056.08 580 562 143.7

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