ASTROSAT CZTI

Data Quality Report

Orbit 52585

Creation date: 2025-06-18T07:17:21.274810
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/AS1C09_011T06_9000006478_52585cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52585cztM0_level2_quad_clean.evt
Size (bytes)601,277,76084,813,120
Size573.4 MB 80.9 MB
Events in quadrant A3,586,346603,723
Events in quadrant B4,584,898597,449
Events in quadrant C6,662,159453,418
Events in quadrant D6,932,835471,317

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154081
B0182771
C0243511
D0251111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63291251.975036%
B633065510.347551%
C6330148723.491311%
D6330109917.361769%

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 7464 6330 116 116 1.55% 1.83%
B 7465 6330 511 511 6.85% 8.07%
C 7465 6330 1328 1328 17.79% 20.98%
D 7465 6331 961 961 12.87% 15.18%

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 415615 2590.87 651 637 160.2
A 5 243 185487 1154.09 651 637 160.2
A 3 14 136176 846.22 651 637 160.2
B 1 238 1061036 8154.37 617 594 130.0
B 4 171 406190 3118.87 617 594 130.0
B 10 254 119180 911.88 617 594 130.0
C 15 248 3866766 24908.95 550 544 155.2
C 15 178 167566 1076.07 550 544 155.2
C 10 22 167250 1074.04 550 544 155.2
D 15 125 1730479 10181.77 585 556 169.9
D 8 176 1709255 10056.85 585 556 169.9
D 11 176 256111 1504.11 585 556 169.9

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