ASTROSAT CZTI

Data Quality Report

Orbit 55374

Creation date: 2025-12-23T02:23:08.542051
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_55374cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55374cztM0_level2_quad_clean.evt
Size (bytes)529,496,64090,250,560
Size505.0 MB 86.1 MB
Events in quadrant A8,573,571457,574
Events in quadrant B3,550,477666,369
Events in quadrant C3,133,682600,849
Events in quadrant D3,846,347562,451

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0299672
B0152511
C0141671
D0160621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6384192730.184837%
B63841732.709900%
C63851201.879405%
D63852293.586531%

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 7504 6384 1723 1723 22.96% 26.99%
B 7504 6384 77 77 1.03% 1.21%
C 7505 6385 73 73 0.97% 1.14%
D 7505 6385 158 158 2.11% 2.47%

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 2920018 19462.9 603 588 150.0
A 4 159 2814202 18757.46 603 588 150.0
A 0 8 398517 2652.86 603 588 150.0
B 0 199 517497 3569.16 678 652 144.8
B 5 185 233139 1605.48 678 652 144.8
B 10 247 51011 347.76 678 652 144.8
C 12 249 322673 1741.13 676 667 184.9
C 13 3 54953 293.53 676 667 184.9
C 14 254 41745 222.11 676 667 184.9
D 2 249 298801 1603.2 670 642 186.0
D 11 176 294726 1581.28 670 642 186.0
D 8 160 144899 775.67 670 642 186.0

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