ASTROSAT CZTI

Data Quality Report

Orbit 57111

Creation date: 2026-04-18T23:35:50.495429
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_083T10_9000006566_57111cztM0_level2.fits modeM0/AS1A14_083T10_9000006566_57111cztM0_level2_quad_clean.evt
Size (bytes)1,659,358,080254,033,280
Size1.5 GB 242.3 MB
Events in quadrant A8,552,7761,817,313
Events in quadrant B12,712,1681,747,530
Events in quadrant C21,343,5011,244,757
Events in quadrant D17,360,5151,584,053

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0394063
B0511633
C0767813
D0645473

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A188241690.897790%
B1882517499.290837%
C18825571430.353254%
D1882510075.349270%

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 19784 18827 30 30 0.15% 0.16%
B 19785 18826 1164 1164 5.88% 6.18%
C 19785 18828 4200 4200 21.23% 22.31%
D 19785 18827 1145 1145 5.79% 6.08%

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 249173 482.37 2070 2018 512.4
A 13 248 69569 131.84 2070 2018 512.4
A 4 159 62694 118.42 2070 2018 512.4
B 8 128 1911353 4620.77 1925 1852 413.2
B 10 16 1771495 4282.33 1925 1852 413.2
B 5 185 678659 1637.79 1925 1852 413.2
C 15 198 12101455 26689.33 1666 1651 453.4
C 12 252 1085319 2390.32 1666 1651 453.4
C 13 3 374172 821.69 1666 1651 453.4
D 15 142 6227770 11222.75 1961 1870 554.8
D 8 160 1060494 1908.27 1961 1870 554.8
D 12 33 955237 1718.53 1961 1870 554.8

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