ASTROSAT CZTI

Data Quality Report

Orbit 44128

Creation date: 2024-06-27T22:59:31.529300
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_012T02_9000005950_44128cztM0_level2.fits modeM0/AS1A13_012T02_9000005950_44128cztM0_level2_quad_clean.evt
Size (bytes)584,179,200105,356,160
Size557.1 MB 100.5 MB
Events in quadrant A9,748,789560,685
Events in quadrant B3,434,515768,913
Events in quadrant C3,197,715742,218
Events in quadrant D4,726,292653,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0337032
B0149112
C0143192
D0187442

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6664196829.531813%
B66641271.905762%
C6664771.155462%
D66643204.801921%

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 7684 6665 1526 1526 19.86% 22.90%
B 7684 6664 33 33 0.43% 0.50%
C 7684 6664 44 44 0.57% 0.66%
D 7684 6664 252 252 3.28% 3.78%

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 15 223 4248731 29750.89 683 670 142.8
A 14 238 1490208 10431.84 683 670 142.8
A 10 83 1283734 8985.82 683 670 142.8
B 5 235 140909 928.79 767 744 150.9
B 5 172 119573 787.41 767 744 150.9
B 0 219 51893 338.93 767 744 150.9
C 14 254 159339 891.91 752 759 177.8
C 1 241 80461 448.27 752 759 177.8
C 4 111 19181 103.61 752 759 177.8
D 1 52 848262 4471.17 739 715 189.6
D 5 235 282402 1486.02 739 715 189.6
D 2 249 268258 1411.4 739 715 189.6

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