ASTROSAT CZTI

Data Quality Report

Orbit 59186

Creation date: 2026-09-07T11:06:15.845903
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_59186cztM0_level2.fits modeM0/AS1T05_271T01_9000006604_59186cztM0_level2_quad_clean.evt
Size (bytes)776,145,60099,979,200
Size740.2 MB 95.3 MB
Events in quadrant A3,581,697731,813
Events in quadrant B3,775,924786,266
Events in quadrant C4,310,953695,794
Events in quadrant D16,461,700275,622

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163461
B0167180
C0182470
D0542170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7730270.349288%
B7730530.685640%
C77301511.953428%
D7730494864.010349%

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 7730 7730 24 24 0.31% 0.31%
B 7730 7730 40 40 0.52% 0.52%
C 7730 7730 114 114 1.47% 1.47%
D 7730 7730 5343 5343 69.12% 69.12%

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 157522 775.45 823 800 202.1
A 3 245 142015 698.72 823 800 202.1
A 10 251 35963 173.98 823 800 202.1
B 4 171 250276 1420.89 818 785 175.6
B 0 157 101907 575.9 818 785 175.6
B 4 236 90689 512.01 818 785 175.6
C 13 3 493042 2246.28 799 790 219.1
C 3 233 353906 1611.36 799 790 219.1
C 9 38 123328 559.17 799 790 219.1
D 12 110 12495319 67886.78 643 614 184.1
D 2 31 404028 2191.85 643 614 184.1
D 11 129 349293 1894.46 643 614 184.1

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