ASTROSAT CZTI

Data Quality Report

Orbit 57832

Creation date: 2026-06-06T11:03:01.609790
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_083T16_9000006580_57832cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57832cztM0_level2_quad_clean.evt
Size (bytes)26,953,9205,734,080
Size25.7 MB 5.5 MB
Events in quadrant A199,96436,847
Events in quadrant B188,20539,353
Events in quadrant C347,81832,195
Events in quadrant D231,43533,207

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A08040
B07640
C012870
D09200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A34382.332362%
B34472.034884%
C3444412.790698%
D34461.744186%

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 343 343 2 2 0.58% 0.58%
B 344 344 0 0 0.00% 0.00%
C 344 344 20 20 5.81% 5.81%
D 344 344 2 2 0.58% 0.58%

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 10 251 22790 1796.85 44 42 12.7
A 3 128 4372 342.02 44 42 12.7
A 4 3 1443 110.66 44 42 12.7
B 0 213 5932 529.07 43 42 11.1
B 6 51 4631 412.21 43 42 11.1
B 0 63 2270 200.13 43 42 11.1
C 15 224 88973 6900.09 40 39 12.9
C 9 38 80027 6206.0 40 39 12.9
C 6 223 13740 1063.02 40 39 12.9
D 12 110 14495 1056.15 42 40 13.7
D 2 249 12848 935.81 42 40 13.7
D 8 240 11177 813.72 42 40 13.7

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