ASTROSAT CZTI

Data Quality Report

Orbit 26773

Creation date: 2024-06-27T19:32:41.087497
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_038T09_9000003860_26773cztM0_level2.evt modeM0/AS1A09_038T09_9000003860_26773cztM0_level2_quad_clean.evt
Size (bytes)920,085,12098,147,520
Size877.5 MB 93.6 MB
Events in quadrant A4,174,056710,589
Events in quadrant B12,397,198486,664
Events in quadrant C3,149,772707,737
Events in quadrant D7,705,329611,219

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0166440
B0412540
C0134240
D0273580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6511320.491476%
B6512391460.104423%
C6511620.952235%
D6511124419.106128%

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 7501 6512 19 19 0.25% 0.29%
B 7502 6513 3381 3381 45.07% 51.91%
C 7501 6512 5 5 0.07% 0.08%
D 7501 6511 1028 1028 13.70% 15.79%

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 1183196 7667.86 770 753 154.2
A 13 254 11270 68.2 770 753 154.2
A 6 16 9536 56.96 770 753 154.2
B 0 189 10203057 98265.54 555 540 103.8
B 10 246 13572 125.51 555 540 103.8
B 12 111 12737 117.47 555 540 103.8
C 14 238 121956 685.5 752 758 176.8
C 2 16 78572 440.12 752 758 176.8
C 15 208 14552 78.02 752 758 176.8
D 7 80 4119878 25022.06 691 674 164.6
D 1 52 790154 4795.69 691 674 164.6
D 2 250 112929 681.89 691 674 164.6

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