ASTROSAT CZTI

Data Quality Report

Orbit 55357

Creation date: 2025-12-21T23:11:30.536892
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_55357cztM0_level2.fits modeM0/AS1A14_009T01_9000006534_55357cztM0_level2_quad_clean.evt
Size (bytes)349,776,00092,390,400
Size333.6 MB 88.1 MB
Events in quadrant A2,774,565607,260
Events in quadrant B2,998,868641,556
Events in quadrant C2,844,787576,885
Events in quadrant D3,847,631540,120

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0128351
B0134651
C0132121
D0157582

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6183440.711629%
B6184991.600906%
C6184300.485123%
D61831522.458354%

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 7293 6184 2 2 0.03% 0.03%
B 7294 6185 51 51 0.70% 0.82%
C 7294 6185 17 17 0.23% 0.27%
D 7293 6184 112 112 1.54% 1.81%

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 72012 436.51 659 641 163.5
A 3 14 50045 302.16 659 641 163.5
A 5 242 30187 180.71 659 641 163.5
B 5 185 318975 2293.14 644 620 138.8
B 0 199 61138 435.92 644 620 138.8
B 10 247 22610 158.4 644 620 138.8
C 13 3 131052 745.02 635 627 175.1
C 12 252 64066 362.38 635 627 175.1
C 12 249 43602 245.48 635 627 175.1
D 11 129 993982 5500.19 636 610 180.6
D 10 181 189446 1045.56 636 610 180.6
D 11 224 70669 387.91 636 610 180.6

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