ASTROSAT CZTI

Data Quality Report

Orbit 54492

Creation date: 2025-10-24T17:17:10.290237
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_127T09_9000006520_54492cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54492cztM0_level2_quad_clean.evt
Size (bytes)481,757,760102,720,960
Size459.4 MB 98.0 MB
Events in quadrant A3,756,015671,441
Events in quadrant B4,295,981702,835
Events in quadrant C5,174,002627,586
Events in quadrant D4,040,369600,452

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164010
B0178880
C0204860
D0170200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72951011.384510%
B72952934.016450%
C72962393.275768%
D7296991.356908%

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 7295 7295 83 83 1.14% 1.14%
B 7295 7295 204 204 2.80% 2.80%
C 7296 7296 232 232 3.18% 3.18%
D 7296 7296 109 109 1.49% 1.49%

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 15 351033 1838.7 768 748 190.5
A 14 235 183925 961.52 768 748 190.5
A 7 237 105792 551.39 768 748 190.5
B 0 213 662172 4023.52 748 718 164.4
B 2 249 441316 2680.09 748 718 164.4
B 5 172 75240 453.31 748 718 164.4
C 4 5 875720 4314.76 734 727 202.8
C 7 64 764316 3765.4 734 727 202.8
C 13 3 209558 1029.79 734 727 202.8
D 3 12 290751 1395.3 737 706 207.9
D 8 176 253166 1214.49 737 706 207.9
D 2 172 221118 1060.32 737 706 207.9

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