ASTROSAT CZTI

Data Quality Report

Orbit 26873

Creation date: 2024-06-27T19:33:55.233770
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/AS1T03_224T01_9000003872_26873cztM0_level2.evt modeM0/AS1T03_224T01_9000003872_26873cztM0_level2_quad_clean.evt
Size (bytes)1,177,905,600164,839,680
Size1.1 GB 157.2 MB
Events in quadrant A7,425,5661,061,092
Events in quadrant B7,800,2641,064,912
Events in quadrant C6,058,0051,056,538
Events in quadrant D13,523,892922,805

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0304340
B0313010
C0263490
D0490420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A128272782.167303%
B128285113.983474%
C128271230.958915%
D12827247719.310829%

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 14052 12829 146 146 1.04% 1.14%
B 14053 12830 384 384 2.73% 2.99%
C 14052 12829 2 2 0.01% 0.02%
D 14052 12829 2134 2134 15.19% 16.63%

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 0 13 1238435 3999.99 1540 1511 309.2
A 6 16 205395 659.32 1540 1511 309.2
A 12 96 41710 130.0 1540 1511 309.2
B 3 64 1264729 4358.33 1521 1479 289.8
B 0 190 239744 822.04 1521 1479 289.8
B 15 33 196327 672.24 1521 1479 289.8
C 14 238 237055 678.87 1482 1490 347.0
C 2 16 28711 78.45 1482 1490 347.0
C 3 233 20645 55.2 1482 1490 347.0
D 7 80 5741567 17870.83 1363 1330 321.2
D 1 52 772142 2399.74 1363 1330 321.2
D 2 250 675623 2099.25 1363 1330 321.2

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