ASTROSAT CZTI

Data Quality Report

Orbit 54127

Creation date: 2025-09-30T03:34:05.595906
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_012T01_9000006512_54127cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54127cztM0_level2_quad_clean.evt
Size (bytes)746,003,52091,906,560
Size711.4 MB 87.6 MB
Events in quadrant A3,484,664692,568
Events in quadrant B5,215,337724,906
Events in quadrant C3,915,361650,390
Events in quadrant D14,432,979207,821

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159952
B0206172
C0171652
D0478452

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C060
D060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72871211.660491%
B72863935.393906%
C72862603.568488%
D7286507369.626681%

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 7747 7289 37 37 0.48% 0.51%
B 7746 7288 325 325 4.20% 4.46%
C 7746 7287 190 190 2.45% 2.61%
D 7746 7287 4819 4819 62.21% 66.13%

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 0 8 249517 1282.44 776 755 194.0
A 15 174 108296 554.4 776 755 194.0
A 3 14 33876 170.75 776 755 194.0
B 5 236 1390182 8573.85 761 734 162.1
B 14 167 173371 1065.29 761 734 162.1
B 0 213 105624 647.24 761 734 162.1
C 1 241 748159 3653.32 749 741 204.6
C 12 252 60988 294.48 749 741 204.6
C 9 38 34337 164.21 749 741 204.6
D 7 70 8480274 68119.7 436 415 124.5
D 8 176 2876025 23100.11 436 415 124.5
D 14 52 304785 2445.04 436 415 124.5

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