ASTROSAT CZTI

Data Quality Report

Orbit 44745

Creation date: 2024-06-27T23:06:00.435904
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_004T11_9000006018_44745cztM0_level2.fits modeM0/AS1A13_004T11_9000006018_44745cztM0_level2_quad_clean.evt
Size (bytes)525,841,92096,220,800
Size501.5 MB 91.8 MB
Events in quadrant A6,113,764640,512
Events in quadrant B3,546,709679,232
Events in quadrant C2,870,628655,352
Events in quadrant D6,450,493503,294

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229801
B0147971
C0131501
D0236613

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62245448.740360%
B62241482.377892%
C6224721.156812%
D6223128620.665274%

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 7204 6224 358 358 4.97% 5.75%
B 7204 6225 71 71 0.99% 1.14%
C 7204 6225 15 15 0.21% 0.24%
D 7203 6224 1016 1016 14.11% 16.32%

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 1846438 13443.79 662 648 137.3
A 15 223 1665429 12125.41 662 648 137.3
A 13 248 37843 270.91 662 648 137.3
B 0 189 486423 3691.92 676 657 131.6
B 5 255 122787 928.21 676 657 131.6
B 0 219 100168 756.3 676 657 131.6
C 14 254 129434 812.0 672 675 158.6
C 3 233 36032 222.97 672 675 158.6
C 12 2 32181 198.69 672 675 158.6
D 8 129 2951221 19065.94 612 592 154.8
D 13 249 259037 1669.98 612 592 154.8
D 1 47 200011 1288.58 612 592 154.8

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