ASTROSAT CZTI

Data Quality Report

Orbit 19574

Creation date: 2024-06-27T18:04:22.591923
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/AS1T03_005T01_9000002908_19574cztM0_level2.evt modeM0/AS1T03_005T01_9000002908_19574cztM0_level2_quad_clean.evt
Size (bytes)636,197,76095,048,640
Size606.7 MB 90.6 MB
Events in quadrant A3,621,855634,637
Events in quadrant B3,727,788639,436
Events in quadrant C3,686,377603,330
Events in quadrant D7,728,836485,057

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0155471
B0157971
C0156231
D0278531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73982092.825088%
B73982573.473912%
C73982513.392809%
D7398177423.979454%

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 7478 7399 4 4 0.05% 0.05%
B 7478 7399 19 19 0.25% 0.26%
C 7478 7399 0 0 0.00% 0.00%
D 7478 7398 1346 1346 18.00% 18.19%

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 9 143 30966 159.83 919 898 188.1
A 11 29 27247 140.06 919 898 188.1
A 5 16 17275 87.06 919 898 188.1
B 3 64 75822 428.44 909 884 174.9
B 7 220 25483 140.64 909 884 174.9
B 12 111 21830 119.75 909 884 174.9
C 14 238 133769 635.75 876 880 209.0
C 7 247 75321 356.13 876 880 209.0
C 9 221 27520 127.45 876 880 209.0
D 13 104 2886042 14478.37 806 782 199.3
D 12 218 680219 3409.45 806 782 199.3
D 1 52 667359 3344.91 806 782 199.3

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