ASTROSAT CZTI

Data Quality Report

Orbit 22917

Creation date: 2024-06-27T18:47:28.024890
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/AS1A08_009T01_9000003382_22917cztM0_level2.evt modeM0/AS1A08_009T01_9000003382_22917cztM0_level2_quad_clean.evt
Size (bytes)331,931,52055,105,920
Size316.6 MB 52.6 MB
Events in quadrant A1,981,110347,783
Events in quadrant B2,030,866351,912
Events in quadrant C2,039,378337,332
Events in quadrant D3,701,320321,571

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A088400
B089120
C088710
D0140940

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0880
B0880
C0880
D0880

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A440030.068182%
B440140.090888%
C4401100.227221%
D44012325.271529%

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 4400 4400 0 0 0.00% 0.00%
B 4401 4401 2 2 0.05% 0.05%
C 4401 4401 0 0 0.00% 0.00%
D 4401 4401 219 219 4.98% 4.98%

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 13 252 18883 178.15 504 493 103.2
A 2 79 15622 146.56 504 493 103.2
A 13 254 7719 70.0 504 493 103.2
B 3 64 14086 142.95 497 484 95.1
B 4 216 11589 116.71 497 484 95.1
B 0 190 11437 115.11 497 484 95.1
C 6 80 87227 775.24 479 482 111.9
C 14 238 77127 684.98 479 482 111.9
C 13 61 3397 26.05 479 482 111.9
D 1 52 555633 4747.34 480 465 116.9
D 13 174 540101 4614.52 480 465 116.9
D 13 172 458823 3919.5 480 465 116.9

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