ASTROSAT CZTI

Data Quality Report

Orbit 10901

Creation date: 2024-06-27T16:05:25.183054
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_055T02_9000001576_10901cztM0_level2.evt modeM0/AS1A04_055T02_9000001576_10901cztM0_level2_quad_clean.evt
Size (bytes)500,806,08078,531,840
Size477.6 MB 74.9 MB
Events in quadrant A4,141,410487,221
Events in quadrant B4,115,979495,996
Events in quadrant C2,732,126499,667
Events in quadrant D3,761,917467,511

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0164522
B0162541
C0125591
D0155281

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61214016.551217%
B61213515.734357%
C6121430.702500%
D61212544.149649%

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 7046 6122 256 256 3.63% 4.18%
B 7046 6122 180 180 2.55% 2.94%
C 7046 6122 0 0 0.00% 0.00%
D 7046 6122 185 185 2.63% 3.02%

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 8 5 1316485 9122.45 711 697 144.2
A 11 29 38911 264.94 711 697 144.2
A 13 251 11962 78.1 711 697 144.2
B 4 239 1097570 7942.15 716 700 138.1
B 10 245 80222 575.8 716 700 138.1
B 0 182 41266 293.73 716 700 138.1
C 7 235 5218 27.67 698 700 163.3
C 13 61 5073 26.78 698 700 163.3
C 8 222 4188 21.36 698 700 163.3
D 10 199 518157 3110.19 686 668 166.4
D 1 52 257112 1541.27 686 668 166.4
D 7 71 153576 919.0 686 668 166.4

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