ASTROSAT CZTI

Data Quality Report

Orbit 00217

Creation date: 2024-06-27T13:58:03.435946
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/AS1P01_118T02_9000000022_00217cztM0_level2.evt modeM0/AS1P01_118T02_9000000022_00217cztM0_level2_quad_clean.evt
Size (bytes)722,401,92054,437,760
Size688.9 MB 51.9 MB
Events in quadrant A5,736,390332,750
Events in quadrant B5,707,181335,581
Events in quadrant C5,061,383325,822
Events in quadrant D5,056,722320,766

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A021385966
B021147815
C019145680
D019217770

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0984
B0962
C0995
D0986

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0202
B0191
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4754170.357594%
B475110.021048%
C475820.042034%
D476050.105042%

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 7377 4765 181 181 2.45% 3.80%
B 7377 4759 99 99 1.34% 2.08%
C 7377 4766 41 41 0.56% 0.86%
D 7376 4771 45 45 0.61% 0.94%

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 15 127 117558 379.7 1407 1398 305.9
A 15 79 74342 238.44 1407 1398 305.9
A 0 253 23836 73.34 1407 1398 305.9
B 5 46 238925 719.1 1413 1424 330.3
B 0 190 17715 49.33 1413 1424 330.3
B 2 253 16027 44.21 1413 1424 330.3
C 1 1 15629 40.28 1280 1331 355.0
C 1 192 15179 39.01 1280 1331 355.0
C 9 241 8147 19.2 1280 1331 355.0
D 1 4 170396 441.54 1239 1290 383.0
D 13 207 31174 78.03 1239 1290 383.0
D 7 50 27685 68.92 1239 1290 383.0

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