ASTROSAT CZTI

Data Quality Report

Orbit 00562

Creation date: 2024-06-27T13:59:48.392157
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/AS1P01_015T03_9000000076_00562cztM0_level2.evt modeM0/AS1P01_015T03_9000000076_00562cztM0_level2_quad_clean.evt
Size (bytes)804,015,36079,519,680
Size766.8 MB 75.8 MB
Events in quadrant A6,880,137503,037
Events in quadrant B6,242,618517,880
Events in quadrant C5,455,590521,067
Events in quadrant D5,421,817498,187

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0241713
B0222772
C0199652
D0198572

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A52561202.283105%
B525640.076104%
C525620.038052%
D525650.095129%

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 7411 5257 469 469 6.33% 8.92%
B 7411 5257 101 101 1.36% 1.92%
C 7411 5257 28 28 0.38% 0.53%
D 7411 5257 47 47 0.63% 0.89%

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 12 133 783479 2282.69 1530 1514 342.6
A 0 149 108287 311.69 1530 1514 342.6
A 0 238 45264 127.71 1530 1514 342.6
B 4 250 121516 329.13 1555 1566 364.4
B 8 4 27112 70.1 1555 1566 364.4
B 4 206 27104 70.07 1555 1566 364.4
C 1 1 20179 49.46 1372 1419 379.3
C 15 241 13875 32.84 1372 1419 379.3
C 5 249 13372 31.52 1372 1419 379.3
D 1 4 132723 321.74 1304 1352 408.3
D 13 221 82259 198.15 1304 1352 408.3
D 2 45 36529 86.15 1304 1352 408.3

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