ASTROSAT CZTI

Data Quality Report

Orbit 36476

Creation date: 2022-06-28T14:08:00.795193
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/AS1A11_049T03_9000005208_36476cztM0_level2.evt modeM0/AS1A11_049T03_9000005208_36476cztM0_level2_quad_clean.evt
Size (bytes)137,577,60029,701,440
Size131.2 MB 28.3 MB
Events in quadrant A980,117196,273
Events in quadrant B981,891197,604
Events in quadrant C1,098,119193,030
Events in quadrant D986,991185,842

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040462
B039521
C043871
D040261

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0360
B0360
C0360
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A172350.290192%
B1723130.754498%
C1723593.424260%
D1723191.102728%

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 3605 1724 1 1 0.03% 0.06%
B 3605 1724 7 7 0.19% 0.41%
C 3605 1724 31 31 0.86% 1.80%
D 3605 1724 14 14 0.39% 0.81%

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 10 83 79100 1718.87 223 219 45.9
A 10 248 35379 766.15 223 219 45.9
A 13 254 3026 61.16 223 219 45.9
B 5 255 61367 1396.29 220 214 43.8
B 0 189 16602 374.18 220 214 43.8
B 4 171 10991 246.07 220 214 43.8
C 0 10 199878 3965.78 210 212 50.3
C 15 214 75749 1500.32 210 212 50.3
C 1 16 1545 26.48 210 212 50.3
D 12 235 47440 892.96 214 208 52.9
D 13 249 40470 761.18 214 208 52.9
D 2 250 18506 345.94 214 208 52.9

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