ASTROSAT CZTI

Data Quality Report

Orbit 26763

Creation date: 2024-06-27T19:32:34.047057
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/AS1A09_044T02_9000003852_26763cztM0_level2.evt modeM0/AS1A09_044T02_9000003852_26763cztM0_level2_quad_clean.evt
Size (bytes)741,810,24062,841,600
Size707.4 MB 59.9 MB
Events in quadrant A4,057,897437,162
Events in quadrant B7,697,769240,203
Events in quadrant C3,460,096422,020
Events in quadrant D6,845,244383,046

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166880
B0271090
C0140030
D0245700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5998460.766922%
B5999201033.505584%
C59991232.050342%
D599999316.552759%

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 7348 5999 0 0 0.00% 0.00%
B 7349 5999 1789 1789 24.34% 29.82%
C 7349 6000 5 5 0.07% 0.08%
D 7349 6000 789 789 10.74% 13.15%

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 13 677190 3926.71 873 863 172.2
A 6 16 10019 53.16 873 863 172.2
A 13 254 9469 49.97 873 863 172.2
B 0 189 4887344 37535.25 710 698 130.2
B 12 111 15005 109.89 710 698 130.2
B 15 32 14377 105.07 710 698 130.2
C 14 238 137694 725.21 826 835 188.7
C 2 16 78708 412.64 826 835 188.7
C 15 208 21361 108.77 826 835 188.7
D 7 80 3622557 18855.97 785 769 192.1
D 1 52 138717 718.19 785 769 192.1
D 2 250 99990 516.57 785 769 192.1

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