ASTROSAT CZTI

Data Quality Report

Orbit 14853

Creation date: 2024-06-27T17:00:29.089438
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_218T01_9000002194_14853cztM0_level2.evt modeM0/AS1A04_218T01_9000002194_14853cztM0_level2_quad_clean.evt
Size (bytes)434,482,56090,552,960
Size414.4 MB 86.4 MB
Events in quadrant A3,090,672593,740
Events in quadrant B3,362,195578,605
Events in quadrant C3,294,439567,993
Events in quadrant D2,988,552568,141

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130042
B0138831
C0134501
D0130961

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62161021.640927%
B62161262.027027%
C6216651.045689%
D6216931.496139%

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 7047 6217 0 0 0.00% 0.00%
B 7047 6217 23 23 0.33% 0.37%
C 7047 6217 2 2 0.03% 0.03%
D 7047 6217 12 12 0.17% 0.19%

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 12 189 65480 412.74 777 760 156.8
A 9 143 15126 91.62 777 760 156.8
A 1 162 8087 46.73 777 760 156.8
B 3 64 161943 1113.05 762 743 144.8
B 0 189 69042 471.59 762 743 144.8
B 0 219 65754 448.89 762 743 144.8
C 3 233 367743 2158.26 737 741 170.0
C 6 96 24659 140.66 737 741 170.0
C 7 247 21578 122.54 737 741 170.0
D 7 38 88343 488.17 746 728 179.5
D 2 234 23369 126.15 746 728 179.5
D 7 254 22479 121.19 746 728 179.5

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