ASTROSAT CZTI

Data Quality Report

Orbit 03974

Creation date: 2024-06-27T14:35:50.518334
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/AS1G05_229T02_9000000508_03974cztM0_level2.evt modeM0/AS1G05_229T02_9000000508_03974cztM0_level2_quad_clean.evt
Size (bytes)195,984,00045,077,760
Size186.9 MB 43.0 MB
Events in quadrant A1,421,549293,357
Events in quadrant B1,640,327290,688
Events in quadrant C1,199,392289,775
Events in quadrant D1,471,432280,666

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A063090
B067650
C058960
D064340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2945240.814941%
B294570.237691%
C294520.067912%
D2945140.475382%

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 2945 2945 16 16 0.54% 0.54%
B 2945 2945 2 2 0.07% 0.07%
C 2945 2945 0 0 0.00% 0.00%
D 2945 2945 15 15 0.51% 0.51%

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 0 118 80672 1196.44 319 313 67.2
A 0 50 74841 1109.62 319 313 67.2
A 15 236 16355 238.84 319 313 67.2
B 15 204 295075 4602.69 320 313 64.0
B 3 0 27614 426.3 320 313 64.0
B 14 167 18869 289.75 320 313 64.0
C 14 67 2964 36.57 305 306 72.7
C 13 61 2505 30.25 305 306 72.7
C 9 144 2488 30.02 305 306 72.7
D 2 232 77491 1032.15 307 298 74.8
D 2 63 74758 995.6 307 298 74.8
D 1 7 70870 943.62 307 298 74.8

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