ASTROSAT CZTI

Data Quality Report

Orbit 37671

Creation date: 2024-06-27T21:42:56.605591
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/AS1A11_075T01_9000005342_37671cztM0_level2.evt modeM0/AS1A11_075T01_9000005342_37671cztM0_level2_quad_clean.evt
Size (bytes)418,325,76078,154,560
Size398.9 MB 74.5 MB
Events in quadrant A3,153,075480,773
Events in quadrant B3,011,921494,768
Events in quadrant C3,081,300498,474
Events in quadrant D3,016,289474,965

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131283
B0130492
C0128672
D0133122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5984190.317513%
B5984480.802139%
C5984260.434492%
D5984651.086230%

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 8639 5985 17 17 0.20% 0.28%
B 8640 5984 19 19 0.22% 0.32%
C 8640 5984 27 27 0.31% 0.45%
D 8640 5984 59 59 0.68% 0.99%

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 334881 2489.71 667 654 134.2
A 6 10 110809 820.56 667 654 134.2
A 9 143 98570 729.39 667 654 134.2
B 0 189 145076 1116.55 667 649 129.4
B 5 172 130701 1005.42 667 649 129.4
B 0 230 37559 285.35 667 649 129.4
C 15 214 275389 1795.93 655 659 153.0
C 14 254 162447 1057.62 655 659 153.0
C 0 10 82290 533.63 655 659 153.0
D 13 249 247345 1568.91 650 632 157.3
D 12 227 114847 726.32 650 632 157.3
D 5 222 62523 393.58 650 632 157.3

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