ASTROSAT CZTI

Data Quality Report

Orbit 01405

Creation date: 2024-06-27T14:12:11.395818
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/AS1G04_003T01_9000000234_01405cztM0_level2.evt modeM0/AS1G04_003T01_9000000234_01405cztM0_level2_quad_clean.evt
Size (bytes)1,053,325,44099,371,520
Size1004.5 MB 94.8 MB
Events in quadrant A8,786,267638,913
Events in quadrant B8,174,894654,940
Events in quadrant C7,328,782645,625
Events in quadrant D7,184,820622,370

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0306852
B0288551
C0263461
D0259351

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64231752.724584%
B6423560.871867%
C642340.062276%
D64231131.759303%

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 7543 6424 757 757 10.04% 11.78%
B 7543 6424 364 364 4.83% 5.67%
C 7543 6424 160 160 2.12% 2.49%
D 7543 6424 355 355 4.71% 5.53%

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 15 127 1153215 2573.04 1861 1875 447.5
A 4 32 468446 1042.71 1861 1875 447.5
A 15 79 18461 37.07 1861 1875 447.5
B 8 4 170800 365.69 1984 1994 461.6
B 6 53 145656 311.22 1984 1994 461.6
B 12 52 145298 310.44 1984 1994 461.6
C 15 241 235803 469.81 1801 1866 497.9
C 3 111 19134 34.68 1801 1866 497.9
C 12 4 18799 34.01 1801 1866 497.9
D 9 66 424190 833.23 1714 1758 507.0
D 15 217 168944 329.77 1714 1758 507.0
D 9 53 72154 138.85 1714 1758 507.0

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