ASTROSAT CZTI

Data Quality Report

Orbit 40064

Creation date: 2024-06-27T22:11:53.735359
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_054T03_9000005516_40064cztM0_level2.fits modeM0/AS1A12_054T03_9000005516_40064cztM0_level2_quad_clean.evt
Size (bytes)357,255,36026,622,720
Size340.7 MB 25.4 MB
Events in quadrant A3,249,64398,652
Events in quadrant B2,339,538120,575
Events in quadrant C4,288,945110,098
Events in quadrant D2,930,296102,847

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07859
B07859
C07859
D07959

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0502394
B0502394
C0502394
D0502394

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05879045690
B05376243003
C07504958684
D06396551384

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A53421993.725197%
B534180.149785%
C53422434.548858%
D53421312.452265%

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 7044 5343 136 136 1.93% 2.55%
B 7043 5342 0 0 0.00% 0.00%
C 7044 5343 197 197 2.80% 3.69%
D 7044 5343 97 97 1.38% 1.82%

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 445069 3779.8 576 565 117.6
A 6 10 386338 3280.39 576 565 117.6
A 2 79 63440 534.65 576 565 117.6
B 0 230 19114 162.15 586 569 114.4
B 4 171 15269 128.53 586 569 114.4
B 12 111 14354 120.53 586 569 114.4
C 9 187 1778514 13284.43 570 576 133.8
C 15 214 219123 1632.94 570 576 133.8
C 0 10 42425 312.69 570 576 133.8
D 2 250 385398 2758.74 571 555 139.5
D 12 227 110686 789.47 571 555 139.5
D 13 249 101196 721.44 571 555 139.5

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