ASTROSAT CZTI

Data Quality Report

Orbit 33989

Creation date: 2024-06-27T20:55:05.545739
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/AS1A11_046T07_9000004862_33989cztM0_level2.evt modeM0/AS1A11_046T07_9000004862_33989cztM0_level2_quad_clean.evt
Size (bytes)693,192,96046,468,800
Size661.1 MB 44.3 MB
Events in quadrant A2,569,263287,402
Events in quadrant B8,697,321264,491
Events in quadrant C3,453,169281,707
Events in quadrant D5,938,930225,035

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102643
B0291602
C0135562
D0211342

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01000
B01000
C01000
D01000

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A495750.100867%
B4957270754.609643%
C49571442.904983%
D4957102920.758523%

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 7080 4958 0 0 0.00% 0.00%
B 7080 4958 2450 2450 34.60% 49.42%
C 7080 4958 112 112 1.58% 2.26%
D 7080 4958 978 978 13.81% 19.73%

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 15578 113.97 658 648 131.0
A 13 254 8234 57.91 658 648 131.0
A 15 169 7042 48.81 658 648 131.0
B 5 14 2039841 20501.95 527 515 99.5
B 5 31 2025382 20356.59 527 515 99.5
B 5 15 2021253 20315.08 527 515 99.5
C 4 254 317027 2184.83 632 639 144.8
C 15 214 213122 1467.31 632 639 144.8
C 0 10 208139 1432.9 632 639 144.8
D 8 230 1621161 11643.46 570 557 139.2
D 8 195 754063 5413.67 570 557 139.2
D 12 6 546079 3919.38 570 557 139.2

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