ASTROSAT CZTI

Data Quality Report

Orbit 38378

Creation date: 2024-06-27T21:51:48.347926
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/AS1A12_005T08_9000005380_38378cztM0_level2.fits modeM0/AS1A12_005T08_9000005380_38378cztM0_level2_quad_clean.evt
Size (bytes)386,392,32090,256,320
Size368.5 MB 86.1 MB
Events in quadrant A2,827,306605,942
Events in quadrant B2,627,444618,806
Events in quadrant C2,713,079600,008
Events in quadrant D5,729,032541,964

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0116963
B0111662
C0112412
D0207142

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0390
C0390
D0390

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5229330.631096%
B5229220.420731%
C5229360.688468%
D52291552.964238%

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 9115 5231 15 15 0.16% 0.29%
B 9115 5231 12 12 0.13% 0.23%
C 9115 5231 30 30 0.33% 0.57%
D 9115 5231 124 124 1.36% 2.37%

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 383451 3244.19 583 571 118.0
A 9 143 128257 1081.9 583 571 118.0
A 12 16 24439 202.24 583 571 118.0
B 0 183 204918 1826.33 582 566 111.9
B 0 230 28692 251.37 582 566 111.9
B 5 184 16880 145.8 582 566 111.9
C 15 214 221148 1655.52 574 578 133.2
C 14 254 191959 1436.44 574 578 133.2
C 0 10 32979 243.19 574 578 133.2
D 10 203 1869711 13615.72 563 549 137.3
D 2 16 601517 4377.69 563 549 137.3
D 12 235 437178 3180.58 563 549 137.3

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