ASTROSAT CZTI

Data Quality Report

Orbit 50592

Creation date: 2025-02-04T01:27:18.306176
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/AS1T05_239T01_9000006444_50592cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50592cztM0_level2_quad_clean.evt
Size (bytes)676,192,32083,715,840
Size644.9 MB 79.8 MB
Events in quadrant A4,098,570584,372
Events in quadrant B10,006,725444,939
Events in quadrant C5,264,013531,316
Events in quadrant D5,167,681529,238

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0165871
B0341481
C0199901
D0198231

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63712343.672893%
B6371234936.870193%
C63715849.166536%
D63722473.876334%

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 7421 6372 205 205 2.76% 3.22%
B 7421 6372 1893 1893 25.51% 29.71%
C 7421 6372 517 517 6.97% 8.11%
D 7422 6373 235 235 3.17% 3.69%

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 12 250 470200 2862.96 655 638 164.0
A 8 38 361320 2199.11 655 638 164.0
A 4 3 133350 809.16 655 638 164.0
B 4 170 3743871 30045.39 579 557 124.6
B 5 172 1657943 13302.87 579 557 124.6
B 7 0 1181442 9478.27 579 557 124.6
C 15 147 1056240 6015.36 627 623 175.5
C 15 234 273079 1552.57 627 623 175.5
C 13 3 220856 1254.98 627 623 175.5
D 10 98 973065 5517.61 638 615 176.2
D 5 157 713925 4047.27 638 615 176.2
D 2 249 167271 945.59 638 615 176.2

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