ASTROSAT CZTI

Data Quality Report

Orbit 42888

Creation date: 2024-06-27T22:45:25.417288
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_143T01_9000005830_42888cztM0_level2.fits modeM0/AS1T05_143T01_9000005830_42888cztM0_level2_quad_clean.evt
Size (bytes)1,163,422,080259,015,680
Size1.1 GB 247.0 MB
Events in quadrant A10,576,2261,705,961
Events in quadrant B7,638,3911,805,470
Events in quadrant C13,472,2671,644,717
Events in quadrant D10,106,6451,551,055

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0411854
B0342084
C0509984
D0416224

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0550
B0550
C0550
D0550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03360
B03360
C03360
D03360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A164557304.436342%
B16456660.401070%
C164558895.402613%
D164554032.449104%

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 21912 16459 525 525 2.40% 3.19%
B 21913 16460 38 38 0.17% 0.23%
C 21912 16459 895 895 4.08% 5.44%
D 21912 16458 380 380 1.73% 2.31%

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 15 237 2081617 5772.65 1754 1719 360.3
A 10 83 1560589 4326.57 1754 1719 360.3
A 13 248 97534 265.93 1754 1719 360.3
B 0 229 178715 517.15 1784 1736 342.2
B 0 190 88139 252.48 1784 1736 342.2
B 5 172 76332 217.98 1784 1736 342.2
C 5 250 2595451 6545.39 1712 1720 396.3
C 12 2 1917081 4833.5 1712 1720 396.3
C 5 233 863781 2175.45 1712 1720 396.3
D 1 52 1071646 2558.24 1732 1682 418.2
D 1 47 686725 1637.91 1732 1682 418.2
D 13 249 541449 1290.56 1732 1682 418.2

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