ASTROSAT CZTI

Data Quality Report

Orbit 23670

Creation date: 2024-06-27T18:55:20.104839
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/AS1A07_100T02_9000003476_23670cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23670cztM0_level2_quad_clean.evt
Size (bytes)32,961,6002,341,440
Size31.4 MB 2.2 MB
Events in quadrant A209,1567,603
Events in quadrant B225,6648,799
Events in quadrant C219,3208,915
Events in quadrant D311,9467,480

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03933
B03731
C04333
D03932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054
B042
C043
D054

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041043194
B041993264
C041703241
D055934411

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4304710.930233%
B4335813.394919%
C4395512.528474%
D3977418.639798%

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 2493 516 0 0 0.00% 0.00%
B 2484 514 0 0 0.00% 0.00%
C 2490 520 0 0 0.00% 0.00%
D 2481 492 31 31 1.25% 6.30%

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 13 254 826 57.83 54 52 13.4
A 3 137 539 36.39 54 52 13.4
A 0 226 460 30.49 54 52 13.4
B 12 17 2029 149.62 55 54 13.2
B 0 245 1858 136.67 55 54 13.2
B 0 229 1766 129.7 55 54 13.2
C 14 238 8430 572.69 53 53 14.6
C 10 9 1233 80.67 53 53 14.6
C 7 247 835 53.46 53 53 14.6
D 1 52 127011 9315.32 47 46 13.6
D 2 234 1889 135.22 47 46 13.6
D 10 199 1601 114.09 47 46 13.6

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