ASTROSAT CZTI

Data Quality Report

Orbit 39678

Creation date: 2024-06-27T22:07:38.005680
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_051T01_9000005490_39678cztM0_level2.fits modeM0/AS1A12_051T01_9000005490_39678cztM0_level2_quad_clean.evt
Size (bytes)639,034,56077,760,000
Size609.4 MB 74.2 MB
Events in quadrant A12,612,70186,536
Events in quadrant B2,800,033687,952
Events in quadrant C4,628,594625,670
Events in quadrant D3,212,459593,052

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0409982
B0116581
C0171881
D0130111

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5161473491.726410%
B5161290.561907%
C51611863.603953%
D51611232.383259%

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 7253 5162 3943 3943 54.36% 76.39%
B 7253 5162 20 20 0.28% 0.39%
C 7253 5162 225 225 3.10% 4.36%
D 7253 5162 112 112 1.54% 2.17%

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 10448099 131087.99 391 385 79.7
A 10 83 306541 3841.35 391 385 79.7
A 15 174 301542 3778.63 391 385 79.7
B 5 172 285612 2453.24 611 597 116.2
B 5 255 66811 569.93 611 597 116.2
B 0 186 21285 178.07 611 597 116.2
C 9 187 1513631 11288.97 577 582 134.0
C 15 208 532157 3966.12 577 582 134.0
C 15 214 215015 1599.9 577 582 134.0
D 13 171 308128 2189.38 585 569 140.5
D 12 218 159183 1129.1 585 569 140.5
D 13 249 132134 936.55 585 569 140.5

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