ASTROSAT CZTI

Data Quality Report

Orbit 11913

Creation date: 2024-06-27T16:20:00.150859
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/AS1A04_088T05_9000001764_11913cztM0_level2.evt modeM0/AS1A04_088T05_9000001764_11913cztM0_level2_quad_clean.evt
Size (bytes)493,706,88086,630,400
Size470.8 MB 82.6 MB
Events in quadrant A3,185,956556,289
Events in quadrant B4,121,196550,875
Events in quadrant C2,914,911564,826
Events in quadrant D4,309,952519,344

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134433
B0163032
C0127492
D0167852

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6187500.808146%
B61873345.398416%
C6187170.274770%
D61872273.668983%

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 7448 6188 6 6 0.08% 0.10%
B 7448 6188 187 187 2.51% 3.02%
C 7448 6189 1 1 0.01% 0.02%
D 7448 6189 210 210 2.82% 3.39%

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 1 162 70995 461.06 752 736 152.4
A 7 144 51041 330.11 752 736 152.4
A 1 178 35028 225.03 752 736 152.4
B 4 239 879511 6268.96 750 732 140.2
B 0 85 116731 827.5 750 732 140.2
B 15 204 75162 530.96 750 732 140.2
C 12 4 10159 54.72 744 749 172.0
C 13 61 5559 27.97 744 749 172.0
C 14 234 2330 9.19 744 749 172.0
D 1 52 611608 3504.37 725 704 174.3
D 8 195 353663 2024.7 725 704 174.3
D 5 222 344065 1969.65 725 704 174.3

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