ASTROSAT CZTI

Data Quality Report

Orbit 10989

Creation date: 2024-06-27T16:06:37.519840
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/AS1G08_027T06_9000001594_10989cztM0_level2.evt modeM0/AS1G08_027T06_9000001594_10989cztM0_level2_quad_clean.evt
Size (bytes)565,689,60095,016,960
Size539.5 MB 90.6 MB
Events in quadrant A4,024,911606,557
Events in quadrant B4,596,090606,990
Events in quadrant C3,688,259601,303
Events in quadrant D4,343,275569,963

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A040
B040
C040
D040

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166502
B0182331
C0160661
D0178131

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A70692233.154619%
B70693655.163389%
C70691882.659499%
D70691972.786816%

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 7429 7070 84 84 1.13% 1.19%
B 7429 7070 133 133 1.79% 1.88%
C 7429 7070 78 78 1.05% 1.10%
D 7429 7070 95 95 1.28% 1.34%

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 8 5 585747 3338.78 850 833 175.2
A 15 223 96160 544.14 850 833 175.2
A 15 239 26056 143.98 850 833 175.2
B 4 239 1031577 6351.63 846 827 162.3
B 15 204 72033 438.78 846 827 162.3
B 0 214 62330 378.99 846 827 162.3
C 4 254 507841 2670.36 814 819 189.9
C 13 61 6134 27.99 814 819 189.9
C 8 222 3920 16.33 814 819 189.9
D 1 52 447887 2139.46 807 789 209.0
D 13 105 262057 1250.22 807 789 209.0
D 5 222 218047 1039.62 807 789 209.0

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