ASTROSAT CZTI

Data Quality Report

Orbit 50962

Creation date: 2025-03-01T01:00:39.910262
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_001T02_9000006452_50962cztM0_level2.fits modeM0/AS1C07_001T02_9000006452_50962cztM0_level2_quad_clean.evt
Size (bytes)1,067,109,12081,835,200
Size1017.7 MB 78.0 MB
Events in quadrant A6,448,597630,784
Events in quadrant B16,642,083227,751
Events in quadrant C5,389,890635,849
Events in quadrant D10,436,183457,336

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0244270
B0546845
C0211300
D0361980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A755989811.879878%
B7558578476.528182%
C75584475.914263%
D7558222529.439005%

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 7559 7559 674 674 8.92% 8.92%
B 7558 7558 4825 4825 63.84% 63.84%
C 7558 7558 292 292 3.86% 3.86%
D 7558 7558 2031 2031 26.87% 26.87%

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 8 43 1911779 10290.31 755 738 185.7
A 14 254 403118 2166.68 755 738 185.7
A 4 3 214502 1151.05 755 738 185.7
B 5 236 13948002 139129.62 460 444 100.2
B 4 171 416988 4155.11 460 444 100.2
B 10 28 89663 889.98 460 444 100.2
C 13 3 1384827 6653.07 754 745 208.0
C 12 247 281720 1350.6 754 745 208.0
C 13 49 181667 869.66 754 745 208.0
D 8 176 6590757 35583.52 653 630 185.2
D 0 33 273724 1474.58 653 630 185.2
D 10 181 183588 987.89 653 630 185.2

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