ASTROSAT CZTI

Data Quality Report

Orbit 56617

Creation date: 2026-03-16T17:49:04.756489
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_083T06_9000006558_56617cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56617cztM0_level2_quad_clean.evt
Size (bytes)1,147,861,440261,777,600
Size1.1 GB 249.7 MB
Events in quadrant A9,314,6731,707,714
Events in quadrant B10,031,1641,802,470
Events in quadrant C10,135,5201,625,185
Events in quadrant D11,561,1961,502,840

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0412772
B0429472
C0434622
D0473822

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186823962.119687%
B186836913.698549%
C186834112.199861%
D186836603.532623%

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 19672 18683 139 139 0.71% 0.74%
B 19673 18684 266 266 1.35% 1.42%
C 19673 18684 175 175 0.89% 0.94%
D 19673 18684 480 480 2.44% 2.57%

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 4 249 834468 1706.64 1995 1944 487.8
A 10 251 245335 498.94 1995 1944 487.8
A 8 249 174402 353.53 1995 1944 487.8
B 8 128 673641 1600.32 1971 1896 419.8
B 0 231 632586 1502.52 1971 1896 419.8
B 4 21 186077 438.78 1971 1896 419.8
C 13 3 525529 986.72 1943 1927 530.6
C 15 178 394598 739.98 1943 1927 530.6
C 12 252 314811 589.62 1943 1927 530.6
D 2 249 945089 1754.53 1925 1837 537.6
D 3 12 585359 1085.4 1925 1837 537.6
D 2 31 442501 819.67 1925 1837 537.6

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