ASTROSAT CZTI

Data Quality Report

Orbit 15535

Creation date: 2024-06-27T17:09:59.967538
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_058T09_9000002300_15535cztM0_level2.evt modeM0/AS1G08_058T09_9000002300_15535cztM0_level2_quad_clean.evt
Size (bytes)525,905,28083,767,680
Size501.5 MB 79.9 MB
Events in quadrant A3,602,125517,098
Events in quadrant B3,800,834517,271
Events in quadrant C3,612,382495,058
Events in quadrant D4,406,905489,664

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0153883
B0159902
C0153692
D0180802

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A070
B070
C070
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7437580.779884%
B74371051.411860%
C74371081.452198%
D74372963.980100%

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 7713 7439 1 1 0.01% 0.01%
B 7713 7439 6 6 0.08% 0.08%
C 7713 7438 1 1 0.01% 0.01%
D 7713 7439 194 194 2.52% 2.61%

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 0 253 60178 319.22 917 898 185.7
A 0 226 8105 38.81 917 898 185.7
A 9 143 7661 36.42 917 898 185.7
B 6 36 40325 223.77 912 889 176.2
B 0 197 34892 192.94 912 889 176.2
B 15 201 30385 167.37 912 889 176.2
C 14 238 134373 652.21 872 877 204.7
C 3 233 37529 179.07 872 877 204.7
C 8 128 12540 56.98 872 877 204.7
D 2 33 434347 2019.69 878 851 214.6
D 1 52 330609 1536.37 878 851 214.6
D 5 222 121847 563.73 878 851 214.6

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