ASTROSAT CZTI

Data Quality Report

Orbit 05904

Creation date: 2024-06-27T15:00:39.992709
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/AS1A02_174T01_9000000766_05904cztM0_level2.evt modeM0/AS1A02_174T01_9000000766_05904cztM0_level2_quad_clean.evt
Size (bytes)401,538,24073,497,600
Size382.9 MB 70.1 MB
Events in quadrant A2,855,338452,180
Events in quadrant B3,020,849465,739
Events in quadrant C2,794,022452,228
Events in quadrant D3,069,203423,228

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0127533
B0131192
C0126192
D0135562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6196380.613299%
B6196260.419626%
C619640.064558%
D6196931.500968%

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 7471 6197 18 18 0.24% 0.29%
B 7471 6197 5 5 0.07% 0.08%
C 7471 6197 0 0 0.00% 0.00%
D 7471 6197 53 53 0.71% 0.86%

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 15 236 40333 270.07 722 708 146.7
A 15 234 32715 218.15 722 708 146.7
A 12 194 7052 43.24 722 708 146.7
B 15 204 37707 265.72 739 724 139.2
B 15 255 32422 227.75 739 724 139.2
B 0 214 23044 160.37 739 724 139.2
C 12 4 10557 59.49 712 716 165.4
C 13 61 5736 30.35 712 716 165.4
C 1 16 4335 21.88 712 716 165.4
D 2 152 309199 1793.58 698 675 172.0
D 2 14 32350 184.14 698 675 172.0
D 2 206 10697 58.26 698 675 172.0

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