ASTROSAT CZTI

Data Quality Report

Orbit 27807

Creation date: 2024-06-27T19:44:40.121660
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_016T02_9000004018_27807cztM0_level2.evt modeM0/AS1A10_016T02_9000004018_27807cztM0_level2_quad_clean.evt
Size (bytes)441,302,400104,806,080
Size420.9 MB 100.0 MB
Events in quadrant A3,190,011719,570
Events in quadrant B3,380,033721,025
Events in quadrant C3,246,904644,981
Events in quadrant D3,130,118659,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131190
B0137170
C0134030
D0132590

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61501151.869919%
B61501742.829268%
C61501562.536585%
D6149741.203448%

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 7385 6150 0 0 0.00% 0.00%
B 7385 6150 16 16 0.22% 0.26%
C 7385 6150 1 1 0.01% 0.02%
D 7384 6149 3 3 0.04% 0.05%

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 8413 46.08 828 817 164.9
A 3 137 7642 41.4 828 817 164.9
A 0 226 6803 36.31 828 817 164.9
B 10 245 86257 548.8 816 796 155.7
B 15 33 69562 441.59 816 796 155.7
B 0 190 26821 167.12 816 796 155.7
C 14 238 125240 696.27 768 776 178.8
C 3 233 65844 364.0 768 776 178.8
C 10 22 44925 246.97 768 776 178.8
D 1 52 176152 955.21 782 763 183.6
D 2 234 24335 128.38 782 763 183.6
D 3 14 7832 38.5 782 763 183.6

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