ASTROSAT CZTI

Data Quality Report

Orbit 41513

Creation date: 2024-06-27T22:29:56.610951
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_035T02_9000005676_41513cztM0_level2.fits modeM0/AS1A12_035T02_9000005676_41513cztM0_level2_quad_clean.evt
Size (bytes)342,552,96090,792,000
Size326.7 MB 86.6 MB
Events in quadrant A3,004,076614,019
Events in quadrant B2,626,517621,074
Events in quadrant C3,155,343575,430
Events in quadrant D3,460,497549,107

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122843
B0116112
C0129482
D0141932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5566150.269493%
B5566130.233561%
C55662133.826806%
D55661452.605102%

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 7209 5567 3 3 0.04% 0.05%
B 7209 5567 7 7 0.10% 0.13%
C 7209 5567 213 213 2.95% 3.83%
D 7209 5567 121 121 1.68% 2.17%

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 558668 4370.27 617 601 127.7
A 13 248 17531 132.58 617 601 127.7
A 2 79 15757 118.69 617 601 127.7
B 0 190 130525 1104.29 609 593 117.7
B 0 245 38573 322.79 609 593 117.7
B 0 183 34228 285.86 609 593 117.7
C 0 10 538440 3934.06 582 584 136.7
C 15 214 228853 1669.63 582 584 136.7
C 14 254 76518 555.4 582 584 136.7
D 1 52 660286 4602.04 592 576 143.4
D 12 233 150688 1047.16 592 576 143.4
D 1 47 83052 575.34 592 576 143.4

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