ASTROSAT CZTI

Data Quality Report

Orbit 54385

Creation date: 2025-10-17T12:56:29.202367
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_126T19_9000006518_54385cztM0_level2.fits modeM0/AS1A14_126T19_9000006518_54385cztM0_level2_quad_clean.evt
Size (bytes)2,770,309,440326,180,160
Size2.6 GB 311.1 MB
Events in quadrant A11,458,3082,501,760
Events in quadrant B23,361,6912,309,090
Events in quadrant C25,833,7912,005,205
Events in quadrant D39,871,0721,257,039

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05340
B05340
C05340
D05340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0545765
B0883007
C0959856
D01370085

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A261972010.767263%
B26197437216.688934%
C26197498419.025079%
D261971094041.760507%

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 31208 26203 82 82 0.26% 0.31%
B 31209 26202 3276 3276 10.50% 12.50%
C 31208 26203 4529 4529 14.51% 17.28%
D 31207 26201 9656 9656 30.94% 36.85%

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 0 8 440478 646.55 2766 2701 677.1
A 8 246 102752 147.76 2766 2701 677.1
A 3 62 96642 138.74 2766 2701 677.1
B 10 14 12136423 22358.09 2538 2441 542.7
B 0 171 277720 507.23 2538 2441 542.7
B 7 0 271014 494.87 2538 2441 542.7
C 1 241 11474245 16950.09 2474 2452 676.8
C 13 3 2375353 3506.07 2474 2452 676.8
C 14 254 1029770 1517.91 2474 2452 676.8
D 8 176 29014020 51841.26 1958 1870 559.6
D 2 172 1126009 2008.7 1958 1870 559.6
D 7 70 598846 1066.72 1958 1870 559.6

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