ASTROSAT CZTI

Data Quality Report

Orbit 56065

Creation date: 2026-02-09T14:27:27.101612
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_9000006548_56065cztM0_level2.fits modeM0/AS1A14_083T03_9000006548_56065cztM0_level2_quad_clean.evt
Size (bytes)1,106,619,840274,400,640
Size1.0 GB 261.7 MB
Events in quadrant A10,297,3981,765,431
Events in quadrant B10,189,9351,895,514
Events in quadrant C8,748,0161,703,473
Events in quadrant D10,194,8321,580,694

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0454273
B0446473
C0418463
D0453483

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04060
B04060
C04060
D04060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A197744612.331344%
B197746403.236573%
C197743071.552544%
D197754092.068268%

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 21074 19775 178 178 0.84% 0.90%
B 21074 19774 180 180 0.85% 0.91%
C 21074 19775 52 52 0.25% 0.26%
D 21075 19776 191 191 0.91% 0.97%

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 12 115 896543 1707.94 2115 2058 523.7
A 15 32 445411 846.54 2115 2058 523.7
A 0 8 318396 604.02 2115 2058 523.7
B 2 249 398711 896.92 2087 2007 442.3
B 0 213 359716 808.75 2087 2007 442.3
B 10 247 243851 546.79 2087 2007 442.3
C 12 252 312604 553.5 2072 2047 561.1
C 6 223 182494 321.61 2072 2047 561.1
C 15 147 55789 95.78 2072 2047 561.1
D 11 129 469139 816.73 2051 1961 572.0
D 6 42 304769 529.38 2051 1961 572.0
D 2 249 301196 523.13 2051 1961 572.0

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