ASTROSAT CZTI

Data Quality Report

Orbit 27945

Creation date: 2024-06-27T19:46:15.860246
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/AS1A10_016T01_9000004034_27945cztM0_level2.evt modeM0/AS1A10_016T01_9000004034_27945cztM0_level2_quad_clean.evt
Size (bytes)1,520,087,040238,703,040
Size1.4 GB 227.6 MB
Events in quadrant A8,802,9131,539,828
Events in quadrant B9,299,7161,552,927
Events in quadrant C9,158,1121,481,056
Events in quadrant D17,520,3381,373,951

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0383410
B0397290
C0392160
D0650380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186081200.644884%
B186082221.193035%
C186083181.708942%
D18607200110.754017%

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 20573 18609 2 2 0.01% 0.01%
B 20573 18608 18 18 0.09% 0.10%
C 20573 18608 1 1 0.00% 0.01%
D 20571 18606 1748 1748 8.50% 9.39%

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 13 254 29810 60.5 2278 2232 455.8
A 3 137 22449 44.35 2278 2232 455.8
A 0 226 19386 37.63 2278 2232 455.8
B 0 230 187786 431.59 2256 2200 430.0
B 10 245 154373 353.88 2256 2200 430.0
B 12 111 53974 120.4 2256 2200 430.0
C 14 238 362076 702.65 2172 2180 512.2
C 3 233 289196 560.36 2172 2180 512.2
C 14 94 22225 39.14 2172 2180 512.2
D 1 52 6385012 12717.28 2098 2043 501.9
D 8 195 1740482 3463.63 2098 2043 501.9
D 2 250 1047429 2082.8 2098 2043 501.9

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