ASTROSAT CZTI

Data Quality Report

Orbit 50782

Creation date: 2025-02-16T20:57:19.689657
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/AS1C07_001T01_9000006450_50782cztM0_level2.fits modeM0/AS1C07_001T01_9000006450_50782cztM0_level2_quad_clean.evt
Size (bytes)601,729,92094,089,600
Size573.9 MB 89.7 MB
Events in quadrant A3,835,242630,362
Events in quadrant B3,782,817690,689
Events in quadrant C6,811,107574,365
Events in quadrant D7,337,400496,220

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0157261
B0157351
C0248861
D0263291

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65532313.525103%
B65531632.487410%
C65546239.505645%
D655499815.227342%

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 7608 6553 108 108 1.42% 1.65%
B 7608 6553 28 28 0.37% 0.43%
C 7609 6554 507 507 6.66% 7.74%
D 7609 6554 928 928 12.20% 14.16%

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 4 249 267648 1507.77 711 695 177.1
A 5 17 139227 782.44 711 695 177.1
A 4 3 101415 568.87 711 695 177.1
B 4 170 405239 2677.31 707 682 151.1
B 5 185 112937 742.89 707 682 151.1
B 10 247 63901 418.37 707 682 151.1
C 5 10 1938905 10379.18 678 671 186.7
C 15 230 1266176 6776.74 678 671 186.7
C 4 5 217293 1160.0 678 671 186.7
D 8 176 2461933 13501.03 655 632 182.3
D 15 174 499860 2738.43 655 632 182.3
D 2 216 455528 2495.25 655 632 182.3

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