ASTROSAT CZTI

Data Quality Report

Orbit 55339

Creation date: 2025-12-20T19:17:30.215666
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_55339cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55339cztM0_level2_quad_clean.evt
Size (bytes)469,120,32098,328,960
Size447.4 MB 93.8 MB
Events in quadrant A3,624,044636,342
Events in quadrant B3,253,061690,444
Events in quadrant C5,529,176586,172
Events in quadrant D4,410,650572,956

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160862
B0148462
C0213332
D0179512

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70502102.978723%
B70501502.127660%
C70515637.984683%
D70513184.509999%

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 8410 7052 55 55 0.65% 0.78%
B 8410 7052 5 5 0.06% 0.07%
C 8411 7053 438 438 5.21% 6.21%
D 8411 7053 203 203 2.41% 2.88%

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 411452 2233.87 747 728 183.9
A 0 8 156909 849.45 747 728 183.9
A 3 78 52762 283.01 747 728 183.9
B 0 199 108156 676.78 738 712 158.8
B 10 247 81528 509.05 738 712 158.8
B 5 185 52123 323.83 738 712 158.8
C 9 38 2145617 11061.34 711 706 193.9
C 13 3 216919 1115.01 711 706 193.9
C 12 252 166937 857.26 711 706 193.9
D 12 18 516418 2543.7 721 692 202.7
D 11 129 395610 1947.84 721 692 202.7
D 7 70 197145 968.96 721 692 202.7

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