ASTROSAT CZTI

Data Quality Report

Orbit 00588

Creation date: 2024-06-27T14:00:13.172851
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_9000000082_00588cztM0_level2.evt modeM0/AS1P01_118T02_9000000082_00588cztM0_level2_quad_clean.evt
Size (bytes)796,262,40044,821,440
Size759.4 MB 42.7 MB
Events in quadrant A5,765,744256,463
Events in quadrant B5,885,976259,407
Events in quadrant C5,334,513255,383
Events in quadrant D6,796,208235,003

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0206713
B0210352
C0194222
D0237792

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A499580.160160%
B499570.140140%
C499550.100100%
D49953126.246246%

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 7121 4996 123 123 1.73% 2.46%
B 7121 4996 90 90 1.26% 1.80%
C 7121 4996 51 51 0.72% 1.02%
D 7121 4996 676 676 9.49% 13.53%

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 13 160 44275 134.1 1449 1433 319.5
A 0 69 36219 108.88 1449 1433 319.5
A 12 133 27905 82.86 1449 1433 319.5
B 4 250 152520 439.88 1467 1477 343.4
B 4 206 49373 139.48 1467 1477 343.4
B 5 249 34526 96.25 1467 1477 343.4
C 3 159 29511 74.8 1342 1395 375.9
C 10 49 11493 26.87 1342 1395 375.9
C 15 241 10529 24.3 1342 1395 375.9
D 1 4 1189480 2991.76 1263 1320 397.1
D 13 216 329657 826.74 1263 1320 397.1
D 13 221 149956 374.26 1263 1320 397.1

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