ASTROSAT CZTI

Data Quality Report

Orbit 11873

Creation date: 2024-06-27T16:19:22.157729
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_049T01_9000001754_11873cztM0_level2.evt modeM0/AS1A04_049T01_9000001754_11873cztM0_level2_quad_clean.evt
Size (bytes)209,093,76029,862,720
Size199.4 MB 28.5 MB
Events in quadrant A1,475,102172,906
Events in quadrant B1,712,167174,539
Events in quadrant C1,343,215178,414
Events in quadrant D1,599,570167,796

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A064121
B070871
C061711
D066651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A29411485.032302%
B29412217.514451%
C2941812.754165%
D29411053.570214%

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 3377 2943 2 2 0.06% 0.07%
B 3377 2943 29 29 0.86% 0.99%
C 3377 2943 0 0 0.00% 0.00%
D 3377 2943 23 23 0.68% 0.78%

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 1 162 54423 753.2 346 338 71.8
A 1 178 26209 360.29 346 338 71.8
A 1 161 23233 318.84 346 338 71.8
B 4 239 260270 3805.14 345 336 68.3
B 3 64 44752 650.2 345 336 68.3
B 0 214 17782 255.39 345 336 68.3
C 8 128 5235 60.92 341 341 80.3
C 8 112 2819 30.85 341 341 80.3
C 13 61 2540 27.38 341 341 80.3
D 8 195 140095 1696.24 335 322 82.4
D 1 52 85587 1034.75 335 322 82.4
D 12 233 45507 548.35 335 322 82.4

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