ASTROSAT CZTI

Data Quality Report

Orbit 27823

Creation date: 2024-06-27T19:44:52.004838
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_048T08_9000004020_27823cztM0_level2.evt modeM0/AS1A10_048T08_9000004020_27823cztM0_level2_quad_clean.evt
Size (bytes)480,047,04094,855,680
Size457.8 MB 90.5 MB
Events in quadrant A3,249,030617,042
Events in quadrant B3,413,158624,934
Events in quadrant C3,537,833591,553
Events in quadrant D3,882,745571,477

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0139520
B0142900
C0147470
D0160570

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0170
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6714380.565982%
B6714781.161752%
C67141101.638368%
D67141732.576705%

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 7674 6714 12 12 0.16% 0.18%
B 7674 6714 5 5 0.07% 0.07%
C 7674 6715 4 4 0.05% 0.06%
D 7674 6715 157 157 2.05% 2.34%

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 13 248 32089 188.27 833 817 166.1
A 13 254 11101 61.91 833 817 166.1
A 3 137 7825 42.19 833 817 166.1
B 5 172 56614 350.95 831 813 159.0
B 0 190 31498 192.99 831 813 159.0
B 12 111 19472 117.35 831 813 159.0
C 3 233 300894 1592.91 796 801 188.4
C 14 238 128741 679.11 796 801 188.4
C 13 61 5601 25.48 796 801 188.4
D 1 52 607265 3189.83 791 769 190.1
D 2 250 192171 1006.67 791 769 190.1
D 2 234 29025 148.61 791 769 190.1

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