ASTROSAT CZTI

Data Quality Report

Orbit 42720

Creation date: 2024-06-27T22:43:26.364628
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/AS1A05_013T01_9000005822_42720cztM0_level2.fits modeM0/AS1A05_013T01_9000005822_42720cztM0_level2_quad_clean.evt
Size (bytes)338,247,36087,039,360
Size322.6 MB 83.0 MB
Events in quadrant A2,902,486610,702
Events in quadrant B2,452,149627,290
Events in quadrant C2,428,908585,408
Events in quadrant D4,356,252469,954

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0115612
B0102782
C099222
D0162542

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0390
B0400
C0400
D0400

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4888200.409165%
B4888240.490998%
C488860.122750%
D488874115.159574%

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 6952 4889 12 12 0.17% 0.25%
B 6952 4889 14 14 0.20% 0.29%
C 6952 4889 1 1 0.01% 0.02%
D 6952 4889 675 675 9.71% 13.81%

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 10 83 524133 4490.81 577 567 116.6
A 12 189 68577 583.35 577 567 116.6
A 13 248 54194 459.98 577 567 116.6
B 5 255 73645 667.92 575 559 109.4
B 0 245 47665 430.49 575 559 109.4
B 0 156 22336 199.01 575 559 109.4
C 15 214 205213 1582.46 560 564 129.3
C 3 233 12888 95.3 560 564 129.3
C 8 79 10560 77.29 560 564 129.3
D 2 249 2052466 16089.86 520 505 127.5
D 9 19 131558 1027.61 520 505 127.5
D 12 6 125968 983.78 520 505 127.5

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