ASTROSAT CZTI

Data Quality Report

Orbit 57918

Creation date: 2026-06-12T05:10:32.255722
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_125T11_9000006582_57918cztM0_level2.fits modeM0/AS1A14_125T11_9000006582_57918cztM0_level2_quad_clean.evt
Size (bytes)472,711,68093,507,840
Size450.8 MB 89.2 MB
Events in quadrant A2,859,386635,060
Events in quadrant B3,106,106673,563
Events in quadrant C3,981,010579,623
Events in quadrant D7,051,785493,992

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0133422
B0139492
C0166272
D0254482

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6434330.512900%
B64341161.802922%
C64342584.009947%
D643396314.969688%

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 7514 6435 15 15 0.20% 0.23%
B 7514 6435 46 46 0.61% 0.71%
C 7514 6435 219 219 2.91% 3.40%
D 7513 6433 1000 1000 13.31% 15.54%

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 10 251 102919 602.05 691 672 169.8
A 3 14 41267 239.03 691 672 169.8
A 7 64 32466 187.21 691 672 169.8
B 7 252 120661 830.76 681 658 144.4
B 4 201 62739 429.78 681 658 144.4
B 3 238 42938 292.7 681 658 144.4
C 15 224 814272 4513.04 655 647 180.3
C 12 252 538471 2983.22 655 647 180.3
C 6 223 51838 283.95 655 647 180.3
D 2 249 2418571 13453.28 622 592 179.7
D 8 160 1373581 7639.11 622 592 179.7
D 3 12 338559 1880.4 622 592 179.7

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