ASTROSAT CZTI

Data Quality Report

Orbit 12916

Creation date: 2024-06-27T16:33:55.861132
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/AS1A04_116T01_9000001896_12916cztM0_level2.evt modeM0/AS1A04_116T01_9000001896_12916cztM0_level2_quad_clean.evt
Size (bytes)656,573,760127,175,040
Size626.2 MB 121.3 MB
Events in quadrant A4,714,547844,608
Events in quadrant B4,964,881811,273
Events in quadrant C3,493,426855,253
Events in quadrant D6,176,944791,625

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01620
B01620
C01620
D01620

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0192494
B0199913
C0161923
D0237813

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78813614.580637%
B78817819.909910%
C7881310.393351%
D78815617.118386%

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 8177 7886 168 168 2.05% 2.13%
B 8177 7886 249 249 3.05% 3.16%
C 8177 7886 2 2 0.02% 0.03%
D 8177 7886 415 415 5.08% 5.26%

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 15 223 524702 2829.76 913 893 185.1
A 15 174 222945 1199.59 913 893 185.1
A 15 239 206235 1109.32 913 893 185.1
B 4 239 1193083 7161.52 878 854 166.5
B 3 209 136862 816.98 878 854 166.5
B 3 64 136737 816.23 878 854 166.5
C 3 233 6898 29.14 890 892 206.1
C 13 61 6566 27.53 890 892 206.1
C 8 128 4548 17.74 890 892 206.1
D 1 52 2652368 12650.22 864 840 209.6
D 8 195 171447 813.95 864 840 209.6
D 12 221 43087 201.56 864 840 209.6

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