ASTROSAT CZTI

Data Quality Report

Orbit 40416

Creation date: 2024-06-27T22:15:49.956748
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/AS1A12_022T01_9000005540_40416cztM0_level2.fits modeM0/AS1A12_022T01_9000005540_40416cztM0_level2_quad_clean.evt
Size (bytes)423,999,36090,365,760
Size404.4 MB 86.2 MB
Events in quadrant A2,911,963663,159
Events in quadrant B3,795,185676,914
Events in quadrant C2,646,103630,113
Events in quadrant D5,941,893406,156

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0117763
B0147712
C0107822
D0210262

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5134200.389560%
B5134490.954422%
C5134170.331126%
D5134185036.034281%

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 7168 5135 10 10 0.14% 0.19%
B 7168 5135 10 10 0.14% 0.19%
C 7168 5135 9 9 0.13% 0.18%
D 7168 5135 952 952 13.28% 18.54%

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 455184 3661.77 617 607 124.1
A 13 248 60771 484.64 617 607 124.1
A 2 79 10281 77.93 617 607 124.1
B 7 202 1276561 11204.22 605 590 113.9
B 5 255 67175 584.68 605 590 113.9
B 4 170 27609 237.25 605 590 113.9
C 15 214 225142 1642.52 592 595 136.7
C 14 254 92596 672.97 592 595 136.7
C 3 233 11193 77.52 592 595 136.7
D 2 250 3462462 28684.07 490 477 120.7
D 12 227 148478 1226.25 490 477 120.7
D 12 191 146138 1206.87 490 477 120.7

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