ASTROSAT CZTI

Data Quality Report

Orbit 33804

Creation date: 2024-06-27T20:52:58.510608
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/AS1T04_091T01_9000004822_33804cztM0_level2.evt modeM0/AS1T04_091T01_9000004822_33804cztM0_level2_quad_clean.evt
Size (bytes)266,451,84039,202,560
Size254.1 MB 37.4 MB
Events in quadrant A1,783,393245,638
Events in quadrant B1,802,325263,615
Events in quadrant C1,580,854259,327
Events in quadrant D2,705,283212,162

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010850
B010949
C010949
D011052

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139146679
B0134586024
C0124285926
D02143711585

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02313
B0239
C02212
D02213

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A28981645.659075%
B3008682.260638%
C2974150.504371%
D260329811.448329%

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 4868 3452 87 87 1.79% 2.52%
B 4868 3628 27 27 0.55% 0.74%
C 4868 3549 8 8 0.16% 0.23%
D 4843 3051 234 234 4.83% 7.67%

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 15 237 468990 6697.3 336 329 70.0
A 13 6 9288 128.03 336 329 70.0
A 13 254 5377 72.14 336 329 70.0
B 5 172 256504 3726.38 350 342 68.7
B 0 219 42353 611.13 350 342 68.7
B 5 255 37924 546.7 350 342 68.7
C 15 214 100330 1255.48 341 344 79.6
C 0 207 43844 546.21 341 344 79.6
C 9 187 24344 301.36 341 344 79.6
D 8 195 521609 7258.98 288 280 71.8
D 12 235 438340 6099.54 288 280 71.8
D 12 233 325568 4529.31 288 280 71.8

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