ASTROSAT CZTI

Data Quality Report

Orbit 52553

Creation date: 2025-06-16T03:13:35.778631
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_52553cztM0_level2.fits modeM0/AS1C09_011T06_9000006478_52553cztM0_level2_quad_clean.evt
Size (bytes)899,674,56076,086,720
Size858.0 MB 72.6 MB
Events in quadrant A3,656,876621,394
Events in quadrant B6,477,115587,192
Events in quadrant C8,173,705471,559
Events in quadrant D14,491,600169,010

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0156702
B0237473
C0288642
D0474842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65122553.915848%
B651199815.327907%
C6511163625.126709%
D6511498676.578099%

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 7592 6513 140 140 1.84% 2.15%
B 7591 6512 583 583 7.68% 8.95%
C 7591 6512 1382 1382 18.21% 21.22%
D 7590 6510 4513 4513 59.46% 69.32%

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 573991 3349.6 682 665 171.2
A 3 14 170416 991.75 682 665 171.2
A 4 3 35735 204.89 682 665 171.2
B 4 170 1874200 13570.61 650 629 138.1
B 10 44 1334048 9658.19 650 629 138.1
B 10 254 200289 1446.17 650 629 138.1
C 15 248 2907240 17741.56 591 586 163.8
C 4 5 826693 5042.37 591 586 163.8
C 14 254 509130 3104.04 591 586 163.8
D 6 42 10106227 85915.44 403 384 117.6
D 8 176 714225 6068.76 403 384 117.6
D 11 176 542161 4605.95 403 384 117.6

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