ASTROSAT CZTI

Data Quality Report

Orbit 43431

Creation date: 2024-06-27T22:51:54.447194
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_018T01_9000005874_43431cztM0_level2.fits modeM0/AS1A12_018T01_9000005874_43431cztM0_level2_quad_clean.evt
Size (bytes)297,921,60083,243,520
Size284.1 MB 79.4 MB
Events in quadrant A2,767,985556,108
Events in quadrant B2,363,590581,779
Events in quadrant C2,302,837555,942
Events in quadrant D3,218,907489,531

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0111622
B0102972
C098662
D0129682

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0330
C0330
D0330

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4805551.144641%
B4805220.457856%
C480530.062435%
D48051944.037461%

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 6928 4806 36 36 0.52% 0.75%
B 6928 4806 11 11 0.16% 0.23%
C 6928 4806 0 0 0.00% 0.00%
D 6928 4806 180 180 2.60% 3.75%

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 539982 5084.41 520 510 106.1
A 15 237 168586 1584.08 520 510 106.1
A 7 3 23929 220.72 520 510 106.1
B 0 189 172931 1719.82 526 514 100.3
B 5 255 47488 468.55 526 514 100.3
B 15 35 24343 237.69 526 514 100.3
C 15 214 201033 1691.43 515 520 118.5
C 3 233 42722 356.0 515 520 118.5
C 0 207 39619 329.82 515 520 118.5
D 1 52 504525 4129.59 499 485 122.1
D 12 6 223728 1829.02 499 485 122.1
D 1 47 191618 1565.95 499 485 122.1

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