ASTROSAT CZTI

Data Quality Report

Orbit 15901

Creation date: 2024-06-27T17:14:54.261136
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_143T01_9000002344_15901cztM0_level2.evt modeM0/AS1A04_143T01_9000002344_15901cztM0_level2_quad_clean.evt
Size (bytes)2,524,466,880433,149,120
Size2.4 GB 413.1 MB
Events in quadrant A21,175,7232,649,952
Events in quadrant B18,185,6842,750,919
Events in quadrant C17,649,5702,612,107
Events in quadrant D16,958,7562,580,180

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A07480
B07480
C07480
D07480

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0870058
B0775077
C0756307
D0763857

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3676418174.942335%
B367647251.972038%
C367647412.015559%
D367645701.550430%

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 39305 36769 879 879 2.24% 2.39%
B 39305 36769 33 33 0.08% 0.09%
C 39305 36769 1 1 0.00% 0.00%
D 39305 36769 55 55 0.14% 0.15%

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 15 239 4191073 4755.17 4372 4272 880.5
A 15 174 73498 78.62 4372 4272 880.5
A 9 143 55219 57.86 4372 4272 880.5
B 4 173 338102 390.85 4451 4334 854.0
B 4 216 136378 154.62 4451 4334 854.0
B 12 111 102214 114.62 4451 4334 854.0
C 14 238 646074 639.29 4275 4294 1003.9
C 3 233 272273 266.94 4275 4294 1003.9
C 10 22 34410 30.0 4275 4294 1003.9
D 13 172 265714 244.9 4360 4232 1067.7
D 2 234 172258 157.37 4360 4232 1067.7
D 2 120 62345 54.43 4360 4232 1067.7

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