ASTROSAT CZTI

Data Quality Report

Orbit 37580

Creation date: 2024-06-27T21:41:48.122082
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/AS1T05_053T01_9000005338_37580cztM0_level2.evt modeM0/AS1T05_053T01_9000005338_37580cztM0_level2_quad_clean.evt
Size (bytes)380,750,40053,720,640
Size363.1 MB 51.2 MB
Events in quadrant A3,019,387319,088
Events in quadrant B2,609,383330,130
Events in quadrant C2,545,090327,862
Events in quadrant D3,022,396304,013

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0121503
B0107772
C0104322
D0123632

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0370

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4916340.691619%
B4916320.650936%
C4916290.589910%
D49161402.847844%

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 7039 4917 26 26 0.37% 0.53%
B 7039 4917 22 22 0.31% 0.45%
C 7039 4917 33 33 0.47% 0.67%
D 7039 4917 155 155 2.20% 3.15%

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 15 222 384723 3316.95 568 557 115.8
A 10 83 282981 2438.5 568 557 115.8
A 13 248 56506 483.07 568 557 115.8
B 5 172 78333 714.16 571 558 108.9
B 0 245 58537 532.39 571 558 108.9
B 4 81 55395 503.54 571 558 108.9
C 15 214 211385 1618.42 556 560 130.3
C 0 10 158454 1212.09 556 560 130.3
C 13 61 3827 25.08 556 560 130.3
D 2 153 226137 1696.85 543 526 133.0
D 2 249 171340 1284.72 543 526 133.0
D 13 249 138946 1041.08 543 526 133.0

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