ASTROSAT CZTI

Data Quality Report

Orbit 02291

Creation date: 2024-06-27T14:15:45.707895
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/AS1T01_058T01_9000000348_02291cztM0_level2.evt modeM0/AS1T01_058T01_9000000348_02291cztM0_level2_quad_clean.evt
Size (bytes)502,329,60080,665,920
Size479.1 MB 76.9 MB
Events in quadrant A3,484,706469,044
Events in quadrant B3,880,506478,196
Events in quadrant C3,820,711484,949
Events in quadrant D3,496,692467,594

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161873
B0170772
C0166812
D0164732

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77991011.295038%
B77991191.525837%
C7799730.936017%
D77991291.654058%

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 7874 7799 0 0 0.00% 0.00%
B 7874 7799 6 6 0.08% 0.08%
C 7874 7799 4 4 0.05% 0.05%
D 7873 7798 23 23 0.29% 0.29%

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 12 133 14564 73.3 902 877 186.7
A 12 194 10099 49.39 902 877 186.7
A 0 226 9779 47.68 902 877 186.7
B 4 48 333086 1904.47 911 887 174.4
B 4 200 13801 74.03 911 887 174.4
B 12 111 13721 73.58 911 887 174.4
C 5 234 326240 1566.9 887 892 207.6
C 8 112 8951 38.81 887 892 207.6
C 10 65 8755 37.87 887 892 207.6
D 9 66 143854 684.19 878 856 209.0
D 15 194 17021 77.34 878 856 209.0
D 13 169 14225 63.97 878 856 209.0

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