ASTROSAT CZTI

Data Quality Report

Orbit 40977

Creation date: 2024-06-27T22:22:55.259175
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_066T01_9000005584_40977cztM0_level2.fits modeM0/AS1A12_066T01_9000005584_40977cztM0_level2_quad_clean.evt
Size (bytes)69,546,24018,100,800
Size66.3 MB 17.3 MB
Events in quadrant A630,668120,791
Events in quadrant B508,248123,335
Events in quadrant C595,233116,581
Events in quadrant D753,622105,178

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A025382
B022431
C024061
D029761

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A107240.373134%
B1072121.119403%
C1072222.052239%
D1072686.343284%

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 2715 1073 2 2 0.07% 0.19%
B 2715 1073 11 11 0.41% 1.03%
C 2715 1073 23 23 0.85% 2.14%
D 2715 1073 54 54 1.99% 5.03%

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 153079 5610.2 123 120 27.3
A 10 67 1466 49.37 123 120 27.3
A 13 254 1415 47.5 123 120 27.3
B 5 255 35578 1383.04 119 116 25.6
B 12 111 2870 107.41 119 116 25.6
B 11 111 2787 104.17 119 116 25.6
C 0 10 74882 2555.27 118 118 29.3
C 15 214 50846 1733.77 118 118 29.3
C 12 249 8320 280.33 118 118 29.3
D 13 171 155341 5081.11 118 114 30.5
D 13 249 101148 3307.19 118 114 30.5
D 2 249 18594 604.91 118 114 30.5

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