ASTROSAT CZTI

Data Quality Report

Orbit 56814

Creation date: 2026-03-29T22:54:42.039231
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_083T03_9000006562_56814cztM0_level2.fits modeM0/AS1A14_083T03_9000006562_56814cztM0_level2_quad_clean.evt
Size (bytes)463,740,48089,936,640
Size442.3 MB 85.8 MB
Events in quadrant A4,808,722586,728
Events in quadrant B4,539,117615,077
Events in quadrant C3,876,847552,157
Events in quadrant D3,455,634532,400

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187991
B0178371
C0161201
D0149571

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62552003.197442%
B62563665.850384%
C62562363.772379%
D62561211.934143%

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 7140 6255 129 129 1.81% 2.06%
B 7141 6256 172 172 2.41% 2.75%
C 7141 6256 192 192 2.69% 3.07%
D 7141 6256 134 134 1.88% 2.14%

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 1439229 8767.18 661 643 164.1
A 7 64 550604 3351.63 661 643 164.1
A 10 251 206585 1255.07 661 643 164.1
B 8 128 710801 5057.79 648 626 140.4
B 5 185 418941 2979.2 648 626 140.4
B 4 206 374838 2665.1 648 626 140.4
C 13 3 644360 3733.43 629 621 172.4
C 15 230 477119 2763.5 629 621 172.4
C 14 254 90860 523.35 629 621 172.4
D 2 249 696978 3824.03 639 606 182.1
D 2 31 120145 656.43 639 606 182.1
D 5 173 48481 262.9 639 606 182.1

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