ASTROSAT CZTI

Data Quality Report

Orbit 53049

Creation date: 2025-07-19T14:04:45.390313
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/AS1C09_011T07_9000006488_53049cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53049cztM0_level2_quad_clean.evt
Size (bytes)545,005,44081,544,320
Size519.8 MB 77.8 MB
Events in quadrant A5,855,490518,186
Events in quadrant B3,074,536592,869
Events in quadrant C5,618,619476,850
Events in quadrant D5,176,691475,559

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01210
B01220
C01210
D01220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021697206
B013517183
C021337578
D020102599

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A582267411.576778%
B58091522.616629%
C576574112.853426%
D57594267.397118%

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 7059 5880 513 513 7.27% 8.72%
B 7059 5873 79 79 1.12% 1.35%
C 7059 5858 683 683 9.68% 11.66%
D 7060 5860 428 428 6.06% 7.30%

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 9 191 2415705 16583.7 583 567 145.6
A 7 206 794295 5450.18 583 567 145.6
A 0 8 208928 1430.72 583 567 145.6
B 1 255 366353 2901.83 589 568 126.1
B 0 213 111888 883.12 589 568 126.1
B 10 247 66085 519.76 589 568 126.1
C 15 224 1566726 10402.69 541 536 150.6
C 13 3 1141752 7579.99 541 536 150.6
C 15 244 215362 1426.88 541 536 150.6
D 12 17 881090 5560.0 555 529 158.4
D 8 176 802153 5061.58 555 529 158.4
D 15 78 672223 4241.18 555 529 158.4

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