ASTROSAT CZTI

Data Quality Report

Orbit 46961

Creation date: 2024-06-27T23:30:00.143191
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_071T07_9000006290_46961cztM0_level2.fits modeM0/AS1A13_071T07_9000006290_46961cztM0_level2_quad_clean.evt
Size (bytes)374,437,44079,773,120
Size357.1 MB 76.1 MB
Events in quadrant A4,729,074530,005
Events in quadrant B3,658,679529,853
Events in quadrant C2,339,068523,962
Events in quadrant D2,737,976475,257

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0174701
B0143431
C0106651
D0119201

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A50881132.220912%
B50882565.031447%
C5088160.314465%
D50881512.967767%

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 5518 5089 3 3 0.05% 0.06%
B 5518 5089 125 125 2.27% 2.46%
C 5518 5089 3 3 0.05% 0.06%
D 5518 5089 108 108 1.96% 2.12%

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 2563385 22044.73 553 541 116.3
A 9 191 8603 69.35 553 541 116.3
A 0 243 7950 63.73 553 541 116.3
B 3 112 1144505 10473.96 547 528 109.2
B 5 255 255909 2338.2 547 528 109.2
B 5 32 27572 247.61 547 528 109.2
C 15 208 97307 743.18 546 548 130.2
C 14 254 78070 595.42 546 548 130.2
C 0 207 18500 137.88 546 548 130.2
D 13 249 477981 3481.58 540 522 137.1
D 1 52 54506 393.65 540 522 137.1
D 13 171 46413 334.63 540 522 137.1

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