ASTROSAT CZTI

Data Quality Report

Orbit 42940

Creation date: 2024-06-27T22:46:03.293138
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/AS1T05_143T01_9000005830_42940cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42940cztM0_level2_quad_clean.evt
Size (bytes)91,563,84016,764,480
Size87.3 MB 16.0 MB
Events in quadrant A772,569119,172
Events in quadrant B606,524120,509
Events in quadrant C495,290114,957
Events in quadrant D1,434,35576,472

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A029811
B024741
C020421
D049611

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A997181.805416%
B997414.112337%
C99720.200602%
D99734134.202608%

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 996 996 13 13 1.31% 1.31%
B 997 997 35 35 3.51% 3.51%
C 996 996 1 1 0.10% 0.10%
D 997 997 329 329 33.00% 33.00%

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 10 83 185484 7580.82 110 108 24.5
A 15 222 130442 5329.92 110 108 24.5
A 15 237 10906 441.58 110 108 24.5
B 4 81 98865 4330.55 110 107 22.8
B 5 172 53537 2342.91 110 107 22.8
B 15 85 10058 436.35 110 107 22.8
C 15 214 46678 1681.26 111 112 27.7
C 14 254 9591 342.24 111 112 27.7
C 12 249 1324 43.76 111 112 27.7
D 10 118 618905 24848.8 95 91 24.9
D 12 233 278004 11159.74 95 91 24.9
D 1 52 65257 2616.77 95 91 24.9

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