ASTROSAT CZTI

Data Quality Report

Orbit 18467

Creation date: 2024-06-27T17:50:06.232469
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_072T02_9000002736_18467cztM0_level2.evt modeM0/AS1A05_072T02_9000002736_18467cztM0_level2_quad_clean.evt
Size (bytes)528,474,24098,812,800
Size504.0 MB 94.2 MB
Events in quadrant A3,886,597629,682
Events in quadrant B3,607,276655,154
Events in quadrant C3,545,953634,759
Events in quadrant D4,501,534596,843

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159992
B0151652
C0149602
D0179932

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68261211.772634%
B6826781.142690%
C68261211.772634%
D68263465.068854%

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 9171 6826 52 52 0.57% 0.76%
B 9171 6826 0 0 0.00% 0.00%
C 9171 6826 0 0 0.00% 0.00%
D 9171 6826 291 291 3.17% 4.26%

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 13 356788 1978.95 892 875 179.8
A 15 174 43096 234.76 892 875 179.8
A 14 238 33272 180.13 892 875 179.8
B 10 245 45253 260.61 899 879 170.3
B 12 111 20001 112.3 899 879 170.3
B 11 111 17336 96.65 899 879 170.3
C 14 238 133959 656.94 871 879 202.6
C 3 233 11319 51.54 871 879 202.6
C 13 61 6054 25.55 871 879 202.6
D 7 238 871140 4135.8 865 843 210.4
D 7 38 173273 819.42 865 843 210.4
D 1 52 50552 236.23 865 843 210.4

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