ASTROSAT CZTI

Data Quality Report

Orbit 54078

Creation date: 2025-09-26T19:31:24.592226
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/AS1A14_041T01_9000006510_54078cztM0_level2.fits modeM0/AS1A14_041T01_9000006510_54078cztM0_level2_quad_clean.evt
Size (bytes)463,498,56092,283,840
Size442.0 MB 88.0 MB
Events in quadrant A3,711,103607,529
Events in quadrant B3,444,705672,627
Events in quadrant C3,995,065562,818
Events in quadrant D5,512,164507,357

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155151
B0146781
C0164128
D0208261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63602864.496855%
B63601362.138365%
C63592664.183048%
D63605658.883648%

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 7375 6361 222 222 3.01% 3.49%
B 7375 6361 58 58 0.79% 0.91%
C 7374 6360 185 185 2.51% 2.91%
D 7375 6361 573 573 7.77% 9.01%

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 15 174 919427 5507.48 672 655 166.8
A 10 253 87318 519.49 672 655 166.8
A 4 3 18833 108.97 672 655 166.8
B 5 250 211681 1466.82 672 649 143.9
B 0 213 169304 1172.27 672 649 143.9
B 5 236 166498 1152.77 672 649 143.9
C 13 3 825343 4637.66 646 640 177.8
C 9 38 230829 1294.45 646 640 177.8
C 1 241 71734 399.79 646 640 177.8
D 8 176 1685096 9146.1 639 609 184.2
D 2 172 966055 5241.99 639 609 184.2
D 3 12 118593 640.61 639 609 184.2

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