ASTROSAT CZTI

Data Quality Report

Orbit 27993

Creation date: 2024-06-27T19:46:50.234848
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/AS1A10_065T03_9000004040_27993cztM0_level2.evt modeM0/AS1A10_065T03_9000004040_27993cztM0_level2_quad_clean.evt
Size (bytes)534,026,88066,899,520
Size509.3 MB 63.8 MB
Events in quadrant A3,504,574410,240
Events in quadrant B3,726,286408,506
Events in quadrant C3,905,988387,979
Events in quadrant D4,615,207384,993

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142850
B0150800
C0158240
D0182660

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6217490.788161%
B62161021.640927%
C62161732.783140%
D62161452.332690%

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 7532 6217 2 2 0.03% 0.03%
B 7531 6216 23 23 0.31% 0.37%
C 7531 6216 26 26 0.35% 0.42%
D 7531 6216 85 85 1.13% 1.37%

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 8 192 11463 59.44 907 893 177.8
A 13 254 8921 45.14 907 893 177.8
A 3 137 7787 38.77 907 893 177.8
B 10 245 173815 1032.66 905 885 167.5
B 12 111 20338 116.16 905 885 167.5
B 11 111 18253 103.71 905 885 167.5
C 3 233 251405 1236.06 878 888 202.7
C 14 238 143840 705.33 878 888 202.7
C 2 16 52666 255.48 878 888 202.7
D 1 52 653918 3247.03 872 855 201.1
D 8 195 348411 1728.05 872 855 201.1
D 6 112 99657 491.24 872 855 201.1

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