ASTROSAT CZTI

Data Quality Report

Orbit 03231

Creation date: 2024-06-27T14:26:32.052571
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_221T01_9000000438_03231cztM0_level2.evt modeM0/AS1G05_221T01_9000000438_03231cztM0_level2_quad_clean.evt
Size (bytes)566,032,32077,932,800
Size539.8 MB 74.3 MB
Events in quadrant A4,017,410463,551
Events in quadrant B4,103,506476,074
Events in quadrant C4,985,362478,732
Events in quadrant D3,569,804462,778

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0172343
B0164812
C0201032
D0161892

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73574446.035069%
B73572743.724344%
C735784211.444882%
D73572102.854424%

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 8572 7357 191 191 2.23% 2.60%
B 8572 7357 29 29 0.34% 0.39%
C 8572 7357 602 602 7.02% 8.18%
D 8572 7357 22 22 0.26% 0.30%

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 0 50 583778 3366.9 840 819 173.1
A 0 118 168176 966.58 840 819 173.1
A 0 226 23486 130.91 840 819 173.1
B 15 204 426757 2557.01 866 844 166.6
B 3 0 234813 1404.66 866 844 166.6
B 5 63 46574 274.54 866 844 166.6
C 14 223 1775372 9450.89 804 805 187.8
C 1 192 29133 150.87 804 805 187.8
C 6 80 23808 122.51 804 805 187.8
D 13 120 228995 1059.14 825 802 215.5
D 9 85 74316 341.21 825 802 215.5
D 13 223 53630 245.2 825 802 215.5

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
Veto Counter