ASTROSAT CZTI

Data Quality Report

Orbit 39099

Creation date: 2024-06-27T22:00:23.749720
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/AS1T05_067T01_9000005432_39099cztM0_level2.fits modeM0/AS1T05_067T01_9000005432_39099cztM0_level2_quad_clean.evt
Size (bytes)334,056,96096,661,440
Size318.6 MB 92.2 MB
Events in quadrant A3,346,039669,711
Events in quadrant B2,587,474685,304
Events in quadrant C2,929,602636,607
Events in quadrant D3,111,913583,991

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133323
B0107372
C0118982
D0125182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5017230.458441%
B5017200.398645%
C501760.119593%
D50171172.332071%

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 7110 5018 4 4 0.06% 0.08%
B 7110 5018 4 4 0.06% 0.08%
C 7110 5018 1 1 0.01% 0.02%
D 7110 5018 90 90 1.27% 1.79%

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 12 16 419827 3380.49 619 609 124.0
A 10 83 404662 3258.2 619 609 124.0
A 12 194 63371 506.1 619 609 124.0
B 5 184 98806 842.93 613 600 116.5
B 5 172 38096 321.84 613 600 116.5
B 0 230 23570 197.16 613 600 116.5
C 15 208 334187 2462.62 587 592 135.5
C 15 214 212118 1561.5 587 592 135.5
C 9 187 48138 350.99 587 592 135.5
D 12 233 274291 1933.45 589 576 141.6
D 12 235 225290 1587.32 589 576 141.6
D 13 171 168325 1184.93 589 576 141.6

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