ASTROSAT CZTI

Data Quality Report

Orbit 04781

Creation date: 2024-06-27T14:46:54.443647
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/AS1G05_218T05_9000000602_04781cztM0_level2.evt modeM0/AS1G05_218T05_9000000602_04781cztM0_level2_quad_clean.evt
Size (bytes)369,694,08042,347,520
Size352.6 MB 40.4 MB
Events in quadrant A2,179,997248,032
Events in quadrant B2,150,290248,490
Events in quadrant C2,557,158236,666
Events in quadrant D4,000,328229,748

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A096022
B095032
C0109522
D0150748

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4526791.745471%
B4526511.126823%
C45262335.148034%
D45261763.888643%

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 4581 4527 12 12 0.26% 0.27%
B 4581 4527 1 1 0.02% 0.02%
C 4581 4527 143 143 3.12% 3.16%
D 4582 4528 176 176 3.84% 3.89%

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 14 111 149446 1429.99 501 490 104.2
A 0 50 75640 721.44 501 490 104.2
A 8 15 14883 138.17 501 490 104.2
B 14 167 93084 935.99 508 496 98.9
B 4 80 54636 547.31 508 496 98.9
B 15 204 21122 208.51 508 496 98.9
C 14 48 684338 6057.35 478 480 112.9
C 13 61 3932 30.58 478 480 112.9
C 7 247 3239 24.44 478 480 112.9
D 11 132 1851075 15694.57 480 465 117.9
D 2 136 138577 1171.29 480 465 117.9
D 2 234 111712 943.46 480 465 117.9

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