ASTROSAT CZTI

Data Quality Report

Orbit 17873

Creation date: 2024-06-27T17:41:54.522435
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_085T01_9000002658_17873cztM0_level2.evt modeM0/AS1A05_085T01_9000002658_17873cztM0_level2_quad_clean.evt
Size (bytes)462,876,480109,716,480
Size441.4 MB 104.6 MB
Events in quadrant A3,159,297741,320
Events in quadrant B3,231,907743,693
Events in quadrant C3,115,861701,723
Events in quadrant D4,067,508680,858

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136921
B0139781
C0136051
D0167851

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6523650.996474%
B6524671.026977%
C6524691.057633%
D65233495.350299%

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 7663 6523 0 0 0.00% 0.00%
B 7664 6524 1 1 0.01% 0.02%
C 7664 6525 0 0 0.00% 0.00%
D 7663 6524 269 269 3.51% 4.12%

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 6 16 44575 266.82 811 798 164.1
A 0 226 7232 39.22 811 798 164.1
A 3 137 6034 31.91 811 798 164.1
B 0 183 47792 308.86 805 785 152.2
B 0 190 18308 115.13 805 785 152.2
B 12 111 17975 112.95 805 785 152.2
C 14 238 120643 676.37 760 767 177.2
C 3 233 15058 80.63 760 767 177.2
C 5 218 13436 71.48 760 767 177.2
D 7 238 1154984 5939.37 759 740 194.3
D 2 234 32354 162.68 759 740 194.3
D 2 152 15833 77.66 759 740 194.3

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