ASTROSAT CZTI

Data Quality Report

Orbit 26609

Creation date: 2024-06-27T19:30:58.348722
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/AS1A09_145T01_9000003848_26609cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26609cztM0_level2_quad_clean.evt
Size (bytes)443,810,88073,272,960
Size423.3 MB 69.9 MB
Events in quadrant A2,587,029480,050
Events in quadrant B3,008,511481,180
Events in quadrant C2,822,942460,840
Events in quadrant D4,671,714435,058

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108550
B0121440
C0115870
D0174490

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5156621.202483%
B51561873.626843%
C51561462.831652%
D515562312.085354%

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 5461 5157 0 0 0.00% 0.00%
B 5461 5157 12 12 0.22% 0.23%
C 5461 5157 7 7 0.13% 0.14%
D 5460 5156 484 484 8.86% 9.39%

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 0 13 24874 179.54 663 649 134.9
A 13 254 8791 60.34 663 649 134.9
A 3 137 5985 39.55 663 649 134.9
B 0 189 247254 1973.01 652 637 125.0
B 3 64 125532 999.2 652 637 125.0
B 5 172 32788 257.22 652 637 125.0
C 3 233 173073 1158.77 630 636 148.8
C 14 238 101488 677.72 630 636 148.8
C 15 208 85344 569.24 630 636 148.8
D 1 52 1636250 10801.08 617 601 151.4
D 7 80 530269 3497.68 617 601 151.4
D 2 250 131362 863.49 617 601 151.4

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