ASTROSAT CZTI

Data Quality Report

Orbit 11602

Creation date: 2024-06-27T16:15:45.437074
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_130T04_9000001704_11602cztM0_level2.evt modeM0/AS1A04_130T04_9000001704_11602cztM0_level2_quad_clean.evt
Size (bytes)264,093,12016,701,120
Size251.9 MB 15.9 MB
Events in quadrant A3,079,58481,465
Events in quadrant B2,013,03684,076
Events in quadrant C1,141,08386,252
Events in quadrant D1,603,49683,939

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0108111
B076201
C049211
D063531

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A234552622.430704%
B234527211.599147%
C2345230.980810%
D23451345.714286%

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 2691 2347 226 226 8.40% 9.63%
B 2691 2347 112 112 4.16% 4.77%
C 2691 2347 0 0 0.00% 0.00%
D 2691 2347 29 29 1.08% 1.24%

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 5 1848245 31839.39 271 264 58.0
A 1 162 66286 1137.51 271 264 58.0
A 1 178 38296 655.26 271 264 58.0
B 4 239 486128 8521.25 285 278 57.0
B 10 16 177612 3110.24 285 278 57.0
B 3 64 119536 2091.65 285 278 57.0
C 8 128 3938 53.34 288 288 68.4
C 12 4 3001 39.65 288 288 68.4
C 9 54 2667 34.77 288 288 68.4
D 1 52 194272 2752.8 285 275 70.5
D 5 222 166172 2354.06 285 275 70.5
D 13 122 47891 675.67 285 275 70.5

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