ASTROSAT CZTI

Data Quality Report

Orbit 51692

Creation date: 2025-04-22T12:01:12.511257
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/AS1A13_031T01_9000006462_51692cztM0_level2.fits modeM0/AS1A13_031T01_9000006462_51692cztM0_level2_quad_clean.evt
Size (bytes)1,642,968,000277,295,040
Size1.5 GB 264.4 MB
Events in quadrant A14,976,3621,833,693
Events in quadrant B11,498,7162,011,805
Events in quadrant C18,412,3771,547,755
Events in quadrant D14,365,2281,607,176

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0587654
B0483113
C0691193
D0572963

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04080
B04080
C04080
D04080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A202595452.690162%
B202594252.097833%
C20259315015.548645%
D2025911645.745595%

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 21154 20262 225 225 1.06% 1.11%
B 21154 20262 257 257 1.21% 1.27%
C 21154 20261 2357 2357 11.14% 11.63%
D 21154 20262 1003 1003 4.74% 4.95%

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 3 14 4687193 8986.37 2128 2081 521.4
A 15 174 363784 693.77 2128 2081 521.4
A 4 3 266529 507.23 2128 2081 521.4
B 10 254 714780 1570.18 2130 2055 453.9
B 8 128 624849 1372.05 2130 2055 453.9
B 0 213 243951 532.91 2130 2055 453.9
C 15 189 4973649 9356.49 1966 1955 531.4
C 12 254 1491742 2803.71 1966 1955 531.4
C 15 147 1168284 2194.98 1966 1955 531.4
D 3 12 1757693 3155.88 2028 1953 556.3
D 7 60 1008495 1809.22 2028 1953 556.3
D 6 228 807303 1447.59 2028 1953 556.3

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