ASTROSAT CZTI

Data Quality Report

Orbit 59165

Creation date: 2026-09-04T02:10:41.437696
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/AS1T05_271T01_9000006604_59165cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59165cztM0_level2_quad_clean.evt
Size (bytes)606,375,36097,741,440
Size578.3 MB 93.2 MB
Events in quadrant A3,168,003712,615
Events in quadrant B3,481,421759,184
Events in quadrant C3,388,585681,942
Events in quadrant D11,875,221328,699

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142484
B0151262
C0148752
D0400442

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6849731.065849%
B68501452.116788%
C68511041.518027%
D6851347450.707926%

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 9110 6850 6 6 0.07% 0.09%
B 9110 6851 41 41 0.45% 0.60%
C 9111 6852 38 38 0.42% 0.55%
D 9110 6851 3305 3305 36.28% 48.24%

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 37607 189.26 792 771 194.6
A 3 14 34478 173.19 792 771 194.6
A 3 137 9851 46.65 792 771 194.6
B 4 171 98094 583.98 783 757 166.7
B 5 185 88713 527.7 783 757 166.7
B 4 236 66677 395.49 783 757 166.7
C 14 254 86062 398.45 780 775 214.0
C 14 96 76973 355.99 780 775 214.0
C 12 252 61582 284.09 780 775 214.0
D 12 1 6824681 47997.48 504 481 142.2
D 2 31 1297499 9122.48 504 481 142.2
D 11 129 1239764 8716.4 504 481 142.2

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

TCT plots

Parameter TCT0 TCT_healed
Tct