ASTROSAT CZTI

Data Quality Report

Orbit 39152

Creation date: 2024-06-27T22:01:09.978590
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_054T02_9000005444_39152cztM0_level2.fits modeM0/AS1A12_054T02_9000005444_39152cztM0_level2_quad_clean.evt
Size (bytes)343,575,36093,191,040
Size327.7 MB 88.9 MB
Events in quadrant A2,904,303636,450
Events in quadrant B2,556,846642,366
Events in quadrant C3,065,503596,086
Events in quadrant D3,755,234555,309

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0119893
B0114912
C0127032
D0151462

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A559840.071454%
B5598270.482315%
C55981522.715255%
D55981963.501250%

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 7241 5599 6 6 0.08% 0.11%
B 7241 5599 20 20 0.28% 0.36%
C 7241 5599 124 124 1.71% 2.21%
D 7241 5599 191 191 2.64% 3.41%

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 10 83 440701 3511.82 622 611 125.3
A 2 79 26594 207.34 622 611 125.3
A 15 223 16050 123.2 622 611 125.3
B 5 172 95045 796.84 614 598 118.5
B 0 190 35900 297.84 614 598 118.5
B 12 111 14856 120.29 614 598 118.5
C 9 187 399144 2901.41 589 594 137.4
C 15 214 231390 1680.18 589 594 137.4
C 14 254 73144 528.16 589 594 137.4
D 12 235 344653 2350.31 594 577 146.4
D 13 171 287227 1958.05 594 577 146.4
D 13 249 284879 1942.01 594 577 146.4

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