ASTROSAT CZTI

Data Quality Report

Orbit 39898

Creation date: 2024-06-27T22:10:06.009487
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/AS1A12_044T09_9000005506_39898cztM0_level2.fits modeM0/AS1A12_044T09_9000005506_39898cztM0_level2_quad_clean.evt
Size (bytes)120,905,28033,197,760
Size115.3 MB 31.7 MB
Events in quadrant A1,110,970225,966
Events in quadrant B964,144228,350
Events in quadrant C965,923215,204
Events in quadrant D1,280,278194,345

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0400
B0400
C0400
D0400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A044572
B040901
C039961
D051631

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A194960.307850%
B194940.205233%
C194970.359159%
D19491125.746537%

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 3952 1950 4 4 0.10% 0.21%
B 3952 1950 3 3 0.08% 0.15%
C 3952 1950 5 5 0.13% 0.26%
D 3952 1950 86 86 2.18% 4.41%

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 200852 4172.57 225 220 48.1
A 6 10 11944 243.83 225 220 48.1
A 13 248 11097 226.21 225 220 48.1
B 0 230 24390 537.72 223 217 45.0
B 4 171 17557 385.72 223 217 45.0
B 5 255 12181 266.13 223 217 45.0
C 15 214 83134 1582.53 218 219 52.4
C 0 10 16537 311.45 218 219 52.4
C 14 254 4984 90.95 218 219 52.4
D 13 249 213860 3903.99 213 206 54.7
D 12 227 99139 1807.75 213 206 54.7
D 2 250 41341 751.64 213 206 54.7

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