ASTROSAT CZTI

Data Quality Report

Orbit 19759

Creation date: 2024-06-27T18:06:39.280375
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/AS1A05_022T08_9000002950_19759cztM0_level2.evt modeM0/AS1A05_022T08_9000002950_19759cztM0_level2_quad_clean.evt
Size (bytes)526,798,08079,770,240
Size502.4 MB 76.1 MB
Events in quadrant A3,128,227515,504
Events in quadrant B3,395,201526,668
Events in quadrant C4,013,825491,259
Events in quadrant D4,992,275444,750

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131783
B0138852
C0161232
D0189762

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6260210.335463%
B6260851.357827%
C62601001.597444%
D62604887.795527%

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 7565 6261 1 1 0.01% 0.02%
B 7565 6261 25 25 0.33% 0.40%
C 7565 6260 2 2 0.03% 0.03%
D 7565 6261 458 458 6.05% 7.32%

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 10 253 28143 171.08 798 785 159.9
A 0 23 12354 72.35 798 785 159.9
A 4 2 8572 48.69 798 785 159.9
B 7 220 176041 1160.15 801 783 151.1
B 0 197 32118 207.43 801 783 151.1
B 0 198 22321 142.57 801 783 151.1
C 3 233 917758 5161.0 762 770 177.7
C 14 238 120864 675.91 762 770 177.7
C 13 61 5503 26.64 762 770 177.7
D 1 52 910001 5101.78 735 715 178.2
D 9 1 369898 2071.4 735 715 178.2
D 2 184 318209 1781.38 735 715 178.2

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