ASTROSAT CZTI

Data Quality Report

Orbit 08942

Creation date: 2024-06-27T15:39:15.204470
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/AS1A03_092T01_9000001240_08942cztM0_level2.evt modeM0/AS1A03_092T01_9000001240_08942cztM0_level2_quad_clean.evt
Size (bytes)872,789,760134,478,720
Size832.4 MB 128.2 MB
Events in quadrant A6,896,145821,134
Events in quadrant B5,997,900831,970
Events in quadrant C5,433,514818,934
Events in quadrant D7,301,472778,975

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02400
B02400
C02400
D02400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0281755
B0255863
C0244103
D0294133

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A118832001.683077%
B118831261.060338%
C11883540.454431%
D118833593.021123%

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 42092 11886 57 57 0.14% 0.48%
B 42092 11886 17 17 0.04% 0.14%
C 42092 11886 0 0 0.00% 0.00%
D 42092 11885 303 303 0.72% 2.55%

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 8 5 1096952 3848.51 1421 1392 284.7
A 5 16 118466 411.26 1421 1392 284.7
A 3 1 100584 348.44 1421 1392 284.7
B 6 51 201974 736.64 1436 1399 272.3
B 0 168 88572 320.16 1436 1399 272.3
B 0 219 47967 171.03 1436 1399 272.3
C 1 3 12574 35.0 1386 1391 319.6
C 5 128 11907 32.91 1386 1391 319.6
C 13 61 10563 28.7 1386 1391 319.6
D 12 233 915869 2506.28 1365 1333 364.9
D 1 52 399898 1092.27 1365 1333 364.9
D 8 195 354542 967.97 1365 1333 364.9

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