ASTROSAT CZTI

Data Quality Report

Orbit 44251

Creation date: 2024-06-27T23:00:59.691236
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_079T01_9000005978_44251cztM0_level2.fits modeM0/AS1A13_079T01_9000005978_44251cztM0_level2_quad_clean.evt
Size (bytes)727,462,08087,022,080
Size693.8 MB 83.0 MB
Events in quadrant A13,503,654194,390
Events in quadrant B3,425,044734,801
Events in quadrant C3,232,922708,348
Events in quadrant D6,242,918527,323

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0482923743
B015371590
C015144604
D0242571177

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01444
B01442
C01444
D01448

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D071

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6527508677.922476%
B68131592.333774%
C6817991.452252%
D6753141020.879609%

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 7782 6738 3622 3622 46.54% 53.75%
B 7782 6984 46 46 0.59% 0.66%
C 7782 6995 22 22 0.28% 0.31%
D 7783 6958 731 731 9.39% 10.51%

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 10742977 111037.56 460 447 96.7
A 10 83 856634 8849.77 460 447 96.7
A 7 3 87694 901.81 460 447 96.7
B 4 158 208260 1384.31 756 732 149.9
B 4 170 66166 436.48 756 732 149.9
B 4 173 43647 286.26 756 732 149.9
C 14 254 261792 1451.67 755 759 179.8
C 3 233 14497 76.4 755 759 179.8
C 2 14 8624 43.74 755 759 179.8
D 4 221 1662627 9781.62 675 655 169.9
D 5 222 868201 5105.99 675 655 169.9
D 13 249 611435 3594.78 675 655 169.9

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