ASTROSAT CZTI

Data Quality Report

Orbit 59226

Creation date: 2026-09-08T05:10:56.044769
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_59226cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59226cztM0_level2_quad_clean.evt
Size (bytes)484,312,32094,841,280
Size461.9 MB 90.4 MB
Events in quadrant A3,316,196648,690
Events in quadrant B3,385,257689,900
Events in quadrant C4,769,008536,190
Events in quadrant D5,963,150553,959

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143262
B0145602
C0187092
D0222342

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63551031.620771%
B63552143.367427%
C6355105516.601101%
D63554657.317073%

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 7530 6356 51 51 0.68% 0.80%
B 7530 6355 87 87 1.16% 1.37%
C 7529 6354 691 691 9.18% 10.88%
D 7530 6355 364 364 4.83% 5.73%

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 129938 740.82 710 692 174.5
A 10 251 108621 618.64 710 692 174.5
A 3 245 96379 548.47 710 692 174.5
B 10 247 273763 1808.71 703 673 151.0
B 4 236 153279 1010.73 703 673 151.0
B 4 201 123335 812.41 703 673 151.0
C 15 189 1797131 10530.12 617 615 170.6
C 15 188 293235 1715.17 617 615 170.6
C 15 147 97858 569.98 617 615 170.6
D 12 110 2880169 15167.54 676 646 189.8
D 11 129 235030 1234.59 676 646 189.8
D 4 206 114650 600.5 676 646 189.8

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