ASTROSAT CZTI

Data Quality Report

Orbit 47644

Creation date: 2024-07-22T19:27:56.796665
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/AS1A13_071T01_9000006340_47644cztM0_level2.fits modeM0/AS1A13_071T01_9000006340_47644cztM0_level2_quad_clean.evt
Size (bytes)425,923,20097,747,200
Size406.2 MB 93.2 MB
Events in quadrant A6,696,587636,805
Events in quadrant B2,943,808669,022
Events in quadrant C2,732,058636,900
Events in quadrant D2,914,302586,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248181
B0130261
C0126621
D0130671

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61722894.682437%
B6173971.571359%
C6173500.809979%
D6173761.231168%

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 7012 6173 77 77 1.10% 1.25%
B 7013 6174 25 25 0.36% 0.40%
C 7013 6174 2 2 0.03% 0.03%
D 7013 6174 22 22 0.31% 0.36%

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 10 83 3451549 24209.88 681 667 142.5
A 9 191 307129 2150.0 681 667 142.5
A 13 248 293798 2056.48 681 667 142.5
B 5 32 118571 871.23 682 661 135.3
B 5 172 60164 439.67 682 661 135.3
B 12 111 17462 124.14 682 661 135.3
C 14 254 77747 481.56 679 681 160.0
C 13 61 4466 23.65 679 681 160.0
C 12 250 4230 22.18 679 681 160.0
D 2 249 94701 552.73 678 657 170.1
D 6 239 81908 477.54 678 657 170.1
D 8 192 42761 247.46 678 657 170.1

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