ASTROSAT CZTI

Data Quality Report

Orbit 38696

Creation date: 2024-06-27T21:55:14.954228
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_054T01_9000005392_38696cztM0_level2.fits modeM0/AS1A12_054T01_9000005392_38696cztM0_level2_quad_clean.evt
Size (bytes)351,547,20086,935,680
Size335.3 MB 82.9 MB
Events in quadrant A2,727,422597,383
Events in quadrant B2,862,875605,723
Events in quadrant C2,746,299572,907
Events in quadrant D4,278,429498,115

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0290

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109953
B0119132
C0111902
D0161292

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5113110.215138%
B51131032.014473%
C5113500.977899%
D51134869.505183%

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 7086 5114 7 7 0.10% 0.14%
B 7086 5114 44 44 0.62% 0.86%
C 7086 5114 49 49 0.69% 0.96%
D 7086 5114 406 406 5.73% 7.94%

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 398313 3313.95 589 576 120.0
A 13 248 26406 215.22 589 576 120.0
A 12 189 9463 74.05 589 576 120.0
B 4 171 461788 4153.76 578 564 111.0
B 15 85 57774 515.23 578 564 111.0
B 0 230 17741 154.7 578 564 111.0
C 15 214 211406 1591.18 567 570 132.5
C 2 16 156423 1176.22 567 570 132.5
C 1 23 96192 721.66 567 570 132.5
D 2 16 1252284 9170.47 553 536 136.5
D 13 249 282605 2066.47 553 536 136.5
D 5 222 182986 1336.65 553 536 136.5

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