ASTROSAT CZTI

Data Quality Report

Orbit 13937

Creation date: 2024-06-27T16:48:10.263518
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/AS1T02_041T01_9000002058_13937cztM0_level2.evt modeM0/AS1T02_041T01_9000002058_13937cztM0_level2_quad_clean.evt
Size (bytes)592,205,760122,702,400
Size564.8 MB 117.0 MB
Events in quadrant A3,024,115825,233
Events in quadrant B3,262,461848,985
Events in quadrant C3,544,272865,605
Events in quadrant D7,692,556751,548

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131162
B0137601
C0145301
D0271551

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6080510.838816%
B6080600.986842%
C6080781.282895%
D6080125420.625000%

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 7366 6081 10 10 0.14% 0.16%
B 7366 6081 14 14 0.19% 0.23%
C 7366 6081 38 38 0.52% 0.62%
D 7366 6081 1183 1183 16.06% 19.45%

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 14 111 55570 357.69 763 747 153.3
A 1 162 18991 119.03 763 747 153.3
A 1 178 6975 40.63 763 747 153.3
B 0 230 89825 624.93 770 750 142.5
B 0 189 51724 357.62 770 750 142.5
B 0 244 32556 223.14 770 750 142.5
C 4 254 377092 2159.91 769 774 174.2
C 3 233 163348 933.11 769 774 174.2
C 13 61 5577 27.57 769 774 174.2
D 1 52 4643029 28016.28 708 694 165.7
D 12 110 184015 1106.33 708 694 165.7
D 10 157 54516 324.81 708 694 165.7

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