ASTROSAT CZTI

Data Quality Report

Orbit 40753

Creation date: 2024-06-27T22:20:01.112955
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_068T02_9000005564_40753cztM0_level2.fits modeM0/AS1A12_068T02_9000005564_40753cztM0_level2_quad_clean.evt
Size (bytes)378,967,68079,643,520
Size361.4 MB 76.0 MB
Events in quadrant A2,742,399559,110
Events in quadrant B2,677,297571,056
Events in quadrant C5,377,216502,688
Events in quadrant D2,834,986422,330

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110673
B0114642
C0195032
D0120902

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01040
B01040
C01040
D01040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5082100.196773%
B50821242.439984%
C508264512.691854%
D508293818.457300%

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 6996 5083 4 4 0.06% 0.08%
B 6996 5083 85 85 1.21% 1.67%
C 6995 5082 680 680 9.72% 13.38%
D 6996 5083 47 47 0.67% 0.92%

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 461498 3966.85 564 552 116.2
A 6 10 58110 495.34 564 552 116.2
A 12 189 25267 212.69 564 552 116.2
B 0 229 423705 3880.86 556 540 109.0
B 4 171 32701 294.95 556 540 109.0
B 4 81 22190 198.55 556 540 109.0
C 9 187 2976183 24363.92 522 525 122.1
C 15 214 212142 1732.67 522 525 122.1
C 0 10 120203 979.89 522 525 122.1
D 13 249 261911 2156.73 490 476 121.2
D 12 191 205295 1689.67 490 476 121.2
D 2 249 117635 966.51 490 476 121.2

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