ASTROSAT CZTI

Data Quality Report

Orbit 58269

Creation date: 2026-07-05T20:14:43.959648
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_044T03_9000006588_58269cztM0_level2.fits modeM0/AS1A14_044T03_9000006588_58269cztM0_level2_quad_clean.evt
Size (bytes)746,714,88091,889,280
Size712.1 MB 87.6 MB
Events in quadrant A5,881,904603,950
Events in quadrant B5,708,471649,015
Events in quadrant C3,568,110628,003
Events in quadrant D11,932,602406,769

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0224840
B0217810
C0160950
D0403490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A709485912.108824%
B709589112.558140%
C70952193.086681%
D7095277239.069767%

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 7094 7094 633 633 8.92% 8.92%
B 7095 7095 470 470 6.62% 6.62%
C 7095 7095 62 62 0.87% 0.87%
D 7095 7095 2179 2179 30.71% 30.71%

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 12 114 2358829 12508.13 762 741 188.5
A 13 248 260547 1378.1 762 741 188.5
A 8 249 95998 505.28 762 741 188.5
B 6 255 922395 5799.25 740 714 158.9
B 3 238 581116 3651.91 740 714 158.9
B 4 206 226281 1419.28 740 714 158.9
C 12 252 229350 1091.97 759 751 209.3
C 12 249 66440 313.78 759 751 209.3
C 15 204 52597 247.66 759 751 209.3
D 12 110 6893718 35657.04 677 647 193.3
D 2 120 1195394 6180.28 677 647 193.3
D 8 160 369583 1908.46 677 647 193.3

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