ASTROSAT CZTI

Data Quality Report

Orbit 31272

Creation date: 2024-06-27T20:25:53.430698
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/AS1A10_058T08_9000004528_31272cztM0_level2.evt modeM0/AS1A10_058T08_9000004528_31272cztM0_level2_quad_clean.evt
Size (bytes)618,626,880101,427,840
Size590.0 MB 96.7 MB
Events in quadrant A3,531,064659,189
Events in quadrant B5,810,651649,965
Events in quadrant C4,193,951623,003
Events in quadrant D4,698,059623,976

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152281
B0225751
C0170041
D0189013

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7409370.499393%
B74101301.754386%
C74102873.873144%
D74091752.361992%

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 7799 7411 0 0 0.00% 0.00%
B 7800 7412 4 4 0.05% 0.05%
C 7800 7412 89 89 1.14% 1.20%
D 7799 7411 65 65 0.83% 0.88%

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 5 16 13866 70.19 911 891 184.9
A 13 254 13400 67.67 911 891 184.9
A 3 137 9504 46.59 911 891 184.9
B 6 159 2135474 12235.44 900 878 174.5
B 4 80 58248 328.84 900 878 174.5
B 12 111 21920 120.61 900 878 174.5
C 0 10 442481 2189.59 858 862 201.7
C 3 233 210938 1041.58 858 862 201.7
C 14 238 147474 726.92 858 862 201.7
D 8 195 938656 4202.35 876 853 223.2
D 12 233 308331 1377.83 876 853 223.2
D 2 250 56737 250.42 876 853 223.2

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