ASTROSAT CZTI

Data Quality Report

Orbit 38207

Creation date: 2024-06-27T21:49:46.353749
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/AS1A07_145T01_9000005370_38207cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38207cztM0_level2_quad_clean.evt
Size (bytes)686,894,400194,630,400
Size655.1 MB 185.6 MB
Events in quadrant A6,025,5311,317,796
Events in quadrant B5,323,6221,345,104
Events in quadrant C5,628,3821,276,729
Events in quadrant D7,547,6471,150,387

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02340
B02340
C02340
D02340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0248264
B0238203
C0239953
D0301777

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A11619270.232378%
B11619300.258198%
C11619240.206558%
D116185744.940609%

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 19139 11622 4 4 0.02% 0.03%
B 19139 11622 17 17 0.09% 0.15%
C 19139 11622 6 6 0.03% 0.05%
D 19139 11621 465 465 2.43% 4.00%

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 10 83 723110 2730.5 1301 1272 264.4
A 12 189 105201 393.13 1301 1272 264.4
A 0 247 78121 290.69 1301 1272 264.4
B 5 172 95565 380.13 1292 1255 248.1
B 0 229 58915 232.41 1292 1255 248.1
B 12 111 31258 120.93 1292 1255 248.1
C 15 214 479565 1633.01 1261 1267 292.9
C 14 254 159466 540.12 1261 1267 292.9
C 2 16 34891 114.8 1261 1267 292.9
D 13 171 2006539 6614.37 1247 1214 303.2
D 2 16 193127 633.01 1247 1214 303.2
D 10 118 104703 341.35 1247 1214 303.2

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