ASTROSAT CZTI

Data Quality Report

Orbit 47350

Creation date: 2024-06-30T15:36:47.899988
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_093T17_9000006322_47350cztM0_level2.fits modeM0/AS1A13_093T17_9000006322_47350cztM0_level2_quad_clean.evt
Size (bytes)580,484,160123,713,280
Size553.6 MB 118.0 MB
Events in quadrant A8,446,090777,858
Events in quadrant B4,085,588850,525
Events in quadrant C3,505,678822,646
Events in quadrant D4,833,455741,399

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306932
B0177190
C0163340
D0194151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A79556167.743558%
B79561712.149321%
C795770.087973%
D79561591.998492%

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 7956 7956 400 400 5.03% 5.03%
B 7956 7956 62 62 0.78% 0.78%
C 7957 7957 2 2 0.03% 0.03%
D 7957 7957 138 138 1.73% 1.73%

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 10 83 3877348 21300.47 867 849 182.0
A 15 235 628606 3449.38 867 849 182.0
A 9 191 572565 3141.45 867 849 182.0
B 0 186 356772 2041.2 876 848 174.4
B 0 190 146487 835.23 876 848 174.4
B 0 198 43914 246.98 876 848 174.4
C 0 207 44719 212.84 870 874 206.0
C 3 233 25053 117.37 870 874 206.0
C 12 249 22824 106.55 870 874 206.0
D 10 204 511589 2324.45 864 836 219.7
D 12 128 201954 915.29 864 836 219.7
D 7 38 194575 881.71 864 836 219.7

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