ASTROSAT CZTI

Data Quality Report

Orbit 58594

Creation date: 2026-07-27T19:45:01.911421
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_044T04_9000006592_58594cztM0_level2.fits modeM0/AS1A14_044T04_9000006592_58594cztM0_level2_quad_clean.evt
Size (bytes)1,863,515,520236,102,400
Size1.7 GB 225.2 MB
Events in quadrant A15,846,8981,648,791
Events in quadrant B16,330,2021,603,079
Events in quadrant C23,091,3811,104,097
Events in quadrant D12,271,4141,505,761

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0601143
B0613383
C0816384
D0495344

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1866416288.722675%
B18665290315.553174%
C18664659735.346121%
D1866310695.727911%

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 19989 18664 957 957 4.79% 5.13%
B 19990 18665 1838 1838 9.19% 9.85%
C 19988 18663 5979 5979 29.91% 32.04%
D 19989 18664 788 788 3.94% 4.22%

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 6498693 13056.3 2023 1970 497.6
A 12 114 547461 1096.26 2023 1970 497.6
A 15 233 412363 824.76 2023 1970 497.6
B 5 172 5023180 12200.73 1922 1846 411.6
B 6 255 1434275 3480.48 1922 1846 411.6
B 2 249 875742 2123.37 1922 1846 411.6
C 15 164 15067825 35462.58 1561 1548 424.9
C 12 254 497343 1166.99 1561 1548 424.9
C 2 12 417740 979.62 1561 1548 424.9
D 2 249 1228845 2192.39 1998 1912 559.6
D 8 160 1088150 1940.98 1998 1912 559.6
D 8 240 921355 1642.94 1998 1912 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