ASTROSAT CZTI

Data Quality Report

Orbit 27887

Creation date: 2024-06-27T19:45:37.239062
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_048T01_9000004028_27887cztM0_level2.evt modeM0/AS1A10_048T01_9000004028_27887cztM0_level2_quad_clean.evt
Size (bytes)1,304,262,720210,928,320
Size1.2 GB 201.2 MB
Events in quadrant A8,705,0241,331,096
Events in quadrant B8,607,2471,339,750
Events in quadrant C8,887,9631,262,248
Events in quadrant D12,072,2511,203,497

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0377000
B0371110
C0375750
D0479460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A18149960.528955%
B181491350.743843%
C181492431.338917%
D1814912827.063750%

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 20134 18149 0 0 0.00% 0.00%
B 20134 18149 1 1 0.00% 0.01%
C 20134 18149 9 9 0.04% 0.05%
D 20134 18149 395 395 1.96% 2.18%

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 6 16 284371 644.1 2181 2138 438.2
A 13 254 29462 62.36 2181 2138 438.2
A 3 137 21463 44.1 2181 2138 438.2
B 10 245 74834 174.67 2167 2112 416.3
B 12 111 52486 120.99 2167 2112 416.3
B 11 111 47434 108.86 2167 2112 416.3
C 14 238 330446 670.17 2086 2095 490.0
C 3 233 316294 641.29 2086 2095 490.0
C 2 16 94890 189.4 2086 2095 490.0
D 7 238 2464159 5026.55 2046 1991 489.8
D 1 52 1724156 3515.82 2046 1991 489.8
D 7 80 82895 165.17 2046 1991 489.8

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