ASTROSAT CZTI

Data Quality Report

Orbit 20567

Creation date: 2024-06-27T18:16:53.176290
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/AS1A05_072T04_9000003040_20567cztM0_level2.evt modeM0/AS1A05_072T04_9000003040_20567cztM0_level2_quad_clean.evt
Size (bytes)802,033,920136,932,480
Size764.9 MB 130.6 MB
Events in quadrant A5,339,178853,425
Events in quadrant B5,442,468859,562
Events in quadrant C5,535,238841,478
Events in quadrant D7,204,867807,567

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0232902
B0234782
C0233952
D0293022

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02280
B02280
C02280
D02280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A113481331.172013%
B113491781.568420%
C113491481.304080%
D113494183.683144%

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 12128 11350 1 1 0.01% 0.01%
B 12129 11351 14 14 0.12% 0.12%
C 12129 11351 0 0 0.00% 0.00%
D 12129 11351 274 274 2.26% 2.41%

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 14 239 90323 324.72 1355 1323 274.1
A 3 1 13076 42.88 1355 1323 274.1
A 8 205 11898 38.58 1355 1323 274.1
B 7 220 81779 310.03 1346 1310 259.5
B 0 219 39782 148.23 1346 1310 259.5
B 12 111 32162 118.87 1346 1310 259.5
C 14 238 201334 653.48 1309 1316 306.1
C 3 233 145721 471.79 1309 1316 306.1
C 3 9 73256 235.04 1309 1316 306.1
D 2 184 1380716 4310.15 1319 1281 320.0
D 5 222 327220 1018.42 1319 1281 320.0
D 2 16 161885 501.82 1319 1281 320.0

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