ASTROSAT CZTI

Data Quality Report

Orbit 55532

Creation date: 2026-01-02T16:41:17.261603
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_099T01_9000006536_55532cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55532cztM0_level2_quad_clean.evt
Size (bytes)365,866,56091,673,280
Size348.9 MB 87.4 MB
Events in quadrant A3,018,586605,461
Events in quadrant B2,998,600638,387
Events in quadrant C3,074,452574,005
Events in quadrant D3,965,773522,850

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01302
B01304
C01302
D01302

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013833291
B014005412
C014089313
D016560300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6242771.233579%
B62221893.037608%
C6229560.899021%
D62383175.081757%

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 7450 6298 7 7 0.09% 0.11%
B 7452 6291 99 99 1.33% 1.57%
C 7475 6287 13 13 0.17% 0.21%
D 7455 6297 277 277 3.72% 4.40%

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 14 183549 1097.06 673 656 166.7
A 4 205 144701 864.04 673 656 166.7
A 12 115 19082 110.53 673 656 166.7
B 5 236 244621 1720.81 654 629 141.8
B 10 247 53203 370.79 654 629 141.8
B 1 238 44977 312.78 654 629 141.8
C 15 178 280041 1586.99 646 640 176.1
C 9 38 106704 602.44 646 640 176.1
C 9 237 68634 386.2 646 640 176.1
D 8 160 893490 4897.46 642 611 182.3
D 15 125 229855 1257.41 642 611 182.3
D 2 172 65094 353.69 642 611 182.3

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