ASTROSAT CZTI

Data Quality Report

Orbit 56772

Creation date: 2026-03-27T03:52:19.236078
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_083T05_9000006560_56772cztM0_level2.fits modeM0/AS1A14_083T05_9000006560_56772cztM0_level2_quad_clean.evt
Size (bytes)640,857,600100,327,680
Size611.2 MB 95.7 MB
Events in quadrant A5,283,686681,607
Events in quadrant B6,616,519648,590
Events in quadrant C7,525,293577,034
Events in quadrant D3,726,281617,687

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0208971
B0248491
C0274931
D0165731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73642002.715915%
B7364117215.915263%
C7364106114.407930%
D73641221.656708%

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 7604 7365 89 89 1.17% 1.21%
B 7604 7365 678 678 8.92% 9.21%
C 7604 7365 828 828 10.89% 11.24%
D 7604 7365 74 74 0.97% 1.00%

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 3 14 1756756 9133.51 774 753 192.3
A 3 62 169319 876.76 774 753 192.3
A 10 251 146645 758.83 774 753 192.3
B 4 206 2488302 15789.13 729 701 157.6
B 5 172 662770 4202.24 729 701 157.6
B 10 247 186323 1178.17 729 701 157.6
C 9 38 2515135 12902.05 708 701 194.9
C 15 230 1445636 7414.24 708 701 194.9
C 14 96 446104 2285.45 708 701 194.9
D 2 249 403693 1913.3 745 713 210.6
D 15 142 110915 523.23 745 713 210.6
D 2 31 99228 467.74 745 713 210.6

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