ASTROSAT CZTI

Data Quality Report

Orbit 34593

Creation date: 2022-02-20T11:02:43.479528
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/AS1C07_014T01_9000004950_34593cztM0_level2.evt modeM0/AS1C07_014T01_9000004950_34593cztM0_level2_quad_clean.evt
Size (bytes)530,017,92060,171,840
Size505.5 MB 57.4 MB
Events in quadrant A2,794,734374,083
Events in quadrant B4,281,026360,819
Events in quadrant C3,017,775370,256
Events in quadrant D5,590,549336,296

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114083
B0160572
C0119982
D0202972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5432200.368189%
B543255710.254050%
C5432200.368189%
D54321562.871870%

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 7224 5433 9 9 0.12% 0.17%
B 7224 5433 365 365 5.05% 6.72%
C 7224 5433 18 18 0.25% 0.33%
D 7224 5433 128 128 1.77% 2.36%

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 9 143 87712 630.9 684 672 138.0
A 10 83 43676 311.71 684 672 138.0
A 4 48 15981 110.97 684 672 138.0
B 5 172 1587878 12618.38 659 643 125.8
B 0 190 31164 242.64 659 643 125.8
B 15 33 21901 169.0 659 643 125.8
C 15 214 231273 1502.41 661 668 153.5
C 0 207 117423 760.67 661 668 153.5
C 0 10 51600 331.83 661 668 153.5
D 8 195 2489328 15557.57 651 634 160.0
D 7 38 204819 1276.42 651 634 160.0
D 13 249 132628 825.13 651 634 160.0

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