ASTROSAT CZTI

Data Quality Report

Orbit 26891

Creation date: 2024-06-27T19:34:14.343293
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_038T21_9000003882_26891cztM0_level2.evt modeM0/AS1A09_038T21_9000003882_26891cztM0_level2_quad_clean.evt
Size (bytes)201,735,36045,881,280
Size192.4 MB 43.8 MB
Events in quadrant A1,849,260300,604
Events in quadrant B1,319,414319,336
Events in quadrant C1,166,012311,793
Events in quadrant D1,621,108295,938

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070470
B052920
C047710
D062830

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22451617.171492%
B2245512.271715%
C2245301.336303%
D2244803.565062%

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 3370 2246 111 111 3.29% 4.94%
B 3370 2246 27 27 0.80% 1.20%
C 3370 2246 0 0 0.00% 0.00%
D 3369 2245 71 71 2.11% 3.16%

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 6 16 409201 6856.87 290 285 59.6
A 0 13 320241 5365.15 290 285 59.6
A 13 254 3894 60.52 290 285 59.6
B 10 246 83888 1472.58 297 291 56.8
B 3 64 46241 809.42 297 291 56.8
B 0 190 14115 243.51 297 291 56.8
C 14 238 46672 683.77 285 287 67.8
C 15 208 4931 68.46 285 287 67.8
C 13 61 1979 24.94 285 287 67.8
D 1 52 346391 5146.9 279 273 67.2
D 2 250 115298 1710.46 279 273 67.2
D 11 176 82376 1220.9 279 273 67.2

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