ASTROSAT CZTI

Data Quality Report

Orbit 24468

Creation date: 2024-06-27T19:06:19.431275
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/AS1T03_183T01_9000003606_24468cztM0_level2.fits modeM0/AS1T03_183T01_9000003606_24468cztM0_level2_quad_clean.evt
Size (bytes)456,462,720132,963,840
Size435.3 MB 126.8 MB
Events in quadrant A3,701,151897,975
Events in quadrant B3,864,754920,834
Events in quadrant C4,292,980854,279
Events in quadrant D4,423,549803,469

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163792
B0165202
C0178162
D0184722

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01640
B01640
C01640
D01640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78932413.053338%
B78942953.737015%
C78944435.611857%
D78942473.128959%

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 8423 7896 0 0 0.00% 0.00%
B 8424 7897 1 1 0.01% 0.01%
C 8424 7897 80 80 0.95% 1.01%
D 8424 7897 17 17 0.20% 0.22%

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 13 254 12788 61.08 958 936 194.0
A 3 137 9006 41.59 958 936 194.0
A 0 226 8180 37.33 958 936 194.0
B 3 64 49482 263.99 955 928 183.9
B 7 202 44796 238.51 955 928 183.9
B 12 111 22796 118.9 955 928 183.9
C 2 16 538798 2496.33 919 922 215.5
C 14 238 144400 665.89 919 922 215.5
C 3 233 24885 111.21 919 922 215.5
D 9 35 507399 2237.0 933 902 226.4
D 8 195 174149 765.16 933 902 226.4
D 12 218 125233 549.12 933 902 226.4

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