ASTROSAT CZTI

Data Quality Report

Orbit 49792

Creation date: 2024-12-12T08:55:23.630685
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_037T01_9000006440_49792cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49792cztM0_level2_quad_clean.evt
Size (bytes)914,993,28056,511,360
Size872.6 MB 53.9 MB
Events in quadrant A6,850,889526,606
Events in quadrant B5,089,600580,407
Events in quadrant C6,896,22076,032
Events in quadrant D14,567,138103,069

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245910
B0193150
C0247320
D0473440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A599270811.815754%
B599362010.345403%
C5993568294.810612%
D59935993100.000000%

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 6987 5993 588 588 8.42% 9.81%
B 6988 5994 498 498 7.13% 8.31%
C 6987 5992 710 710 10.16% 11.85%
D 6987 5992 5681 5681 81.31% 94.81%

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 63 663840 4227.68 607 592 156.9
A 12 50 539053 3432.26 607 592 156.9
A 4 204 492357 3134.61 607 592 156.9
B 10 28 1747709 13615.51 604 586 128.3
B 1 207 434582 3382.18 604 586 128.3
B 5 185 215155 1672.16 604 586 128.3
C 15 148 2508713 74846.23 98 97 33.5
C 15 147 1039640 31015.46 98 97 33.5
C 15 174 682073 20347.21 98 97 33.5
D 8 129 2990228 52655.13 141 133 56.8
D 14 52 2220492 39100.19 141 133 56.8
D 15 168 2089304 36789.99 141 133 56.8

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