ASTROSAT CZTI

Data Quality Report

Orbit 39463

Creation date: 2024-06-27T22:04:51.167150
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/AS1A12_044T16_9000005478_39463cztM0_level2.fits modeM0/AS1A12_044T16_9000005478_39463cztM0_level2_quad_clean.evt
Size (bytes)372,723,84085,135,680
Size355.5 MB 81.2 MB
Events in quadrant A4,754,989559,733
Events in quadrant B3,097,189573,419
Events in quadrant C2,909,375569,653
Events in quadrant D2,644,891522,775

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0178563
B0125062
C0116392
D0112212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50212945.855407%
B50212695.357499%
C5021380.756821%
D5021500.995818%

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 7114 5022 269 269 3.78% 5.36%
B 7114 5022 209 209 2.94% 4.16%
C 7114 5022 27 27 0.38% 0.54%
D 7114 5022 39 39 0.55% 0.78%

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 15 222 2093000 18310.68 563 552 114.3
A 10 83 413657 3615.02 563 552 114.3
A 15 174 40248 347.37 563 552 114.3
B 5 172 879019 8089.09 557 542 108.6
B 8 3 17611 157.17 557 542 108.6
B 12 111 13707 121.22 557 542 108.6
C 15 208 478030 3624.69 562 567 131.7
C 15 214 215179 1629.24 562 567 131.7
C 10 20 8426 59.66 562 567 131.7
D 12 227 169528 1241.93 558 543 136.1
D 2 249 120791 883.74 558 543 136.1
D 13 249 98922 723.02 558 543 136.1

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