ASTROSAT CZTI

Data Quality Report

Orbit 42795

Creation date: 2024-06-27T22:44:19.695803
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/AS1A05_013T01_9000005822_42795cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42795cztM0_level2_quad_clean.evt
Size (bytes)417,332,16078,583,680
Size398.0 MB 74.9 MB
Events in quadrant A2,740,814581,873
Events in quadrant B2,915,574578,160
Events in quadrant C2,578,879564,907
Events in quadrant D6,824,300305,076

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0109652
B0119692
C0105882
D0237132

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0340
C0340
D0340

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4985100.200602%
B49851973.951856%
C4985290.581745%
D4985212842.688064%

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 7078 4986 4 4 0.06% 0.08%
B 7078 4986 159 159 2.25% 3.19%
C 7078 4986 23 23 0.32% 0.46%
D 7078 4985 2031 2031 28.69% 40.74%

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 527171 4562.65 567 556 115.4
A 13 6 7241 57.92 567 556 115.4
A 13 248 7047 56.24 567 556 115.4
B 0 229 521797 4834.73 554 540 107.8
B 5 255 106935 986.83 554 540 107.8
B 0 245 34867 318.39 554 540 107.8
C 15 214 214126 1658.77 553 556 128.8
C 14 254 197305 1528.13 553 556 128.8
C 8 79 7617 54.84 553 556 128.8
D 2 249 4911489 47993.39 416 404 102.3
D 12 233 139207 1356.45 416 404 102.3
D 12 6 47682 462.02 416 404 102.3

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