ASTROSAT CZTI

Data Quality Report

Orbit 53486

Creation date: 2025-08-18T10:34:34.214260
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_002T07_9000006498_53486cztM0_level2.fits modeM0/AS1A14_002T07_9000006498_53486cztM0_level2_quad_clean.evt
Size (bytes)791,375,04086,123,520
Size754.7 MB 82.1 MB
Events in quadrant A7,152,374607,609
Events in quadrant B4,713,079675,787
Events in quadrant C12,590,421272,837
Events in quadrant D4,329,387593,009

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258632
B0184702
C0419692
D0175432

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A657197914.898798%
B657170410.713742%
C6570392659.756469%
D65702173.302892%

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 7686 6571 760 760 9.89% 11.57%
B 7685 6570 487 487 6.34% 7.41%
C 7685 6570 3759 3759 48.91% 57.21%
D 7685 6570 134 134 1.74% 2.04%

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 63 2439161 13725.15 728 710 177.7
A 3 62 938483 5278.38 728 710 177.7
A 15 174 704839 3963.29 728 710 177.7
B 2 249 1072754 6898.86 721 695 155.4
B 5 185 337252 2165.79 721 695 155.4
B 10 28 162072 1038.48 721 695 155.4
C 7 64 3886787 30924.98 458 454 125.7
C 1 241 2944339 23425.57 458 454 125.7
C 15 224 1923424 15301.78 458 454 125.7
D 11 245 743367 3563.94 734 699 208.4
D 2 249 297479 1424.2 734 699 208.4
D 3 12 129067 616.02 734 699 208.4

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