ASTROSAT CZTI

Data Quality Report

Orbit 08829

Creation date: 2024-06-27T15:37:46.058407
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/AS1G07_087T01_9000001228_08829cztM0_level2.evt modeM0/AS1G07_087T01_9000001228_08829cztM0_level2_quad_clean.evt
Size (bytes)252,846,72052,165,440
Size241.1 MB 49.7 MB
Events in quadrant A2,067,355343,412
Events in quadrant B1,777,809352,208
Events in quadrant C1,536,179336,333
Events in quadrant D2,062,806325,837

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A082402
B072791
C065891
D081661

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0640
B0640
C0640
D0640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A31171223.914020%
B3117852.726981%
C3117371.187039%
D31171865.967276%

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 4442 3117 24 24 0.54% 0.77%
B 4442 3117 20 20 0.45% 0.64%
C 4442 3117 0 0 0.00% 0.00%
D 4442 3117 117 117 2.63% 3.75%

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 8 5 248534 2939.42 411 403 84.4
A 15 223 106370 1255.31 411 403 84.4
A 15 239 38080 446.33 411 403 84.4
B 10 16 142132 1784.93 413 403 79.4
B 0 214 24006 297.26 413 403 79.4
B 5 255 8385 100.52 413 403 79.4
C 13 61 2990 28.3 393 395 91.7
C 12 4 1887 16.27 393 395 91.7
C 3 202 1001 6.61 393 395 91.7
D 2 16 392952 3918.23 386 376 100.2
D 2 152 75528 750.08 386 376 100.2
D 1 31 44670 442.09 386 376 100.2

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