ASTROSAT CZTI

Data Quality Report

Orbit 15998

Creation date: 2024-06-27T17:16:35.095161
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/AS1G08_046T09_9000002362_15998cztM0_level2.evt modeM0/AS1G08_046T09_9000002362_15998cztM0_level2_quad_clean.evt
Size (bytes)142,061,76021,441,600
Size135.5 MB 20.4 MB
Events in quadrant A998,839125,830
Events in quadrant B1,079,802128,640
Events in quadrant C1,053,209122,183
Events in quadrant D1,027,919122,643

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A043652
B045381
C044751
D045071

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0440
B0440
C0440
D0440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2054291.411879%
B2054713.456670%
C2054592.872444%
D2054120.584226%

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 2395 2056 0 0 0.00% 0.00%
B 2395 2056 4 4 0.17% 0.19%
C 2395 2055 2 2 0.08% 0.10%
D 2395 2056 5 5 0.21% 0.24%

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 13 210 7318 130.73 254 247 54.1
A 15 239 6834 121.79 254 247 54.1
A 12 96 5254 92.57 254 247 54.1
B 15 222 22972 444.66 257 249 51.1
B 10 245 9789 186.69 257 249 51.1
B 5 65 9382 178.72 257 249 51.1
C 14 238 37625 617.23 250 250 60.6
C 3 233 25055 409.64 250 250 60.6
C 0 207 13705 222.2 250 250 60.6
D 2 152 29564 465.89 250 241 62.9
D 4 239 23041 362.25 250 241 62.9
D 9 85 19336 303.38 250 241 62.9

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