ASTROSAT CZTI

Data Quality Report

Orbit 59225

Creation date: 2026-09-08T03:07:26.047569
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/AS1T05_271T01_9000006604_59225cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59225cztM0_level2_quad_clean.evt
Size (bytes)325,275,84065,782,080
Size310.2 MB 62.7 MB
Events in quadrant A2,664,010434,985
Events in quadrant B2,267,504474,509
Events in quadrant C2,213,820442,051
Events in quadrant D4,558,387337,560

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131602270
B0121052395
C0116571958
D0229546576

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192
B0206
C0204
D0205

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09614
B09612
C09614
D09610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A44212144.840534%
B43621062.430078%
C4442420.945520%
D401543010.709838%

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 9131 4821 145 145 1.59% 3.01%
B 9057 4778 29 29 0.32% 0.61%
C 9061 4842 16 16 0.18% 0.33%
D 7588 4489 342 342 4.51% 7.62%

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 15 233 275712 2226.91 500 487 123.6
A 14 238 133150 1073.41 500 487 123.6
A 3 245 97457 784.61 500 487 123.6
B 4 201 137348 1291.22 496 478 106.0
B 10 247 93809 880.47 496 478 106.0
B 4 236 36469 339.53 496 478 106.0
C 2 12 92653 651.31 508 503 141.5
C 12 252 63738 446.94 508 503 141.5
C 6 223 32519 226.29 508 503 141.5
D 12 110 2171139 17211.76 441 421 126.1
D 11 129 573236 4541.89 441 421 126.1
D 8 240 42164 330.98 441 421 126.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct