ASTROSAT CZTI

Data Quality Report

Orbit 37263

Creation date: 2024-06-27T21:37:35.170558
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_087T01_9000005292_37263cztM0_level2.evt modeM0/AS1T04_087T01_9000005292_37263cztM0_level2_quad_clean.evt
Size (bytes)419,400,00056,764,800
Size400.0 MB 54.1 MB
Events in quadrant A3,032,381345,874
Events in quadrant B3,102,028348,348
Events in quadrant C2,863,633335,208
Events in quadrant D3,345,651320,227

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0310

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01080
B01080
C01080
D01080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0122893
B0127092
C0116272
D0135782

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5264991.880699%
B5264781.481763%
C5264470.892857%
D52642364.483283%

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 7087 5265 62 62 0.87% 1.18%
B 7087 5265 28 28 0.40% 0.53%
C 7087 5265 33 33 0.47% 0.63%
D 7087 5265 185 185 2.61% 3.51%

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 271406 2202.09 609 598 123.0
A 15 237 181955 1474.71 609 598 123.0
A 15 222 66372 534.84 609 598 123.0
B 0 190 219038 1863.94 605 590 117.2
B 5 172 208789 1776.49 605 590 117.2
B 0 213 134427 1141.98 605 590 117.2
C 15 214 224445 1630.86 587 590 137.3
C 14 254 189558 1376.7 587 590 137.3
C 0 10 107247 777.03 587 590 137.3
D 2 249 526680 3681.28 583 568 142.9
D 13 249 290229 2026.8 583 568 142.9
D 2 153 174443 1216.63 583 568 142.9

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