ASTROSAT CZTI

Data Quality Report

Orbit 53223

Creation date: 2025-07-31T15:56:54.187457
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_9000006490_53223cztM0_level2.fits modeM0/AS1C09_011T06_9000006490_53223cztM0_level2_quad_clean.evt
Size (bytes)698,952,96088,577,280
Size666.6 MB 84.5 MB
Events in quadrant A3,511,196627,201
Events in quadrant B3,911,805683,762
Events in quadrant C12,127,500391,068
Events in quadrant D5,830,649536,037

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150483
B0160372
C0404242
D0218062

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63561582.485840%
B63561392.186910%
C6356265741.803021%
D63566169.691630%

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 7576 6357 88 88 1.16% 1.38%
B 7576 6357 76 76 1.00% 1.20%
C 7576 6356 2745 2745 36.23% 43.19%
D 7576 6357 518 518 6.84% 8.15%

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 3 62 268383 1596.78 666 650 167.7
A 0 8 175867 1045.01 666 650 167.7
A 4 249 114508 679.06 666 650 167.7
B 10 254 362034 2588.37 668 647 139.6
B 2 249 192975 1377.51 668 647 139.6
B 12 3 130714 931.58 668 647 139.6
C 9 38 5019535 33279.31 541 535 150.8
C 1 241 2601950 17249.11 541 535 150.8
C 15 224 1190829 7892.44 541 535 150.8
D 6 239 1242828 6857.32 628 600 181.2
D 15 125 892803 4925.12 628 600 181.2
D 12 3 291965 1608.39 628 600 181.2

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