ASTROSAT CZTI

Data Quality Report

Orbit 55230

Creation date: 2025-12-13T08:50:58.123856
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_009T01_9000006534_55230cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55230cztM0_level2_quad_clean.evt
Size (bytes)475,073,28096,111,360
Size453.1 MB 91.7 MB
Events in quadrant A3,623,604632,130
Events in quadrant B3,125,854676,346
Events in quadrant C5,346,656571,651
Events in quadrant D4,965,686559,703

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158163
B0145352
C0205402
D0196342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A67421111.646396%
B67421261.868882%
C67425327.890834%
D67423385.013349%

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 7712 6742 103 103 1.34% 1.53%
B 7712 6742 67 67 0.87% 0.99%
C 7712 6743 524 524 6.79% 7.77%
D 7712 6742 310 310 4.02% 4.60%

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 594782 3452.97 700 685 172.1
A 4 205 184726 1069.67 700 685 172.1
A 3 14 45801 262.22 700 685 172.1
B 2 249 131726 883.14 693 667 148.4
B 10 247 88871 594.36 693 667 148.4
B 0 182 47253 313.92 693 667 148.4
C 7 220 548615 3028.74 660 655 180.9
C 10 22 496260 2739.36 660 655 180.9
C 12 252 472113 2605.89 660 655 180.9
D 11 129 1308041 6804.06 671 642 192.1
D 2 249 476557 2476.79 671 642 192.1
D 8 245 98345 508.47 671 642 192.1

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