ASTROSAT CZTI

Data Quality Report

Orbit 11740

Creation date: 2024-06-27T16:17:39.472974
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/AS1G08_006T03_9000001732_11740cztM0_level2.evt modeM0/AS1G08_006T03_9000001732_11740cztM0_level2_quad_clean.evt
Size (bytes)334,388,16068,952,960
Size318.9 MB 65.8 MB
Events in quadrant A2,391,769451,393
Events in quadrant B2,801,576452,293
Events in quadrant C1,900,961461,959
Events in quadrant D2,752,173431,996

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0971520
B01094175
C0839215
D01111343

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A12733597094080
B1-1-1
C1-1-1
D1-1-1

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4124310.751697%
B41121553.769455%
C412520.048485%
D4117631.530240%

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 4133 4132 2 2 0.05% 0.05%
B 4133 4132 106 106 2.56% 2.57%
C 4133 4132 0 0 0.00% 0.00%
D 4133 4133 56 56 1.35% 1.35%

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 8 15 232301 2301.11 496 487 100.7
A 1 162 81537 804.55 496 487 100.7
A 1 178 46852 460.24 496 487 100.7
B 4 239 434545 4776.01 489 480 90.9
B 15 204 191807 2105.17 489 480 90.9
B 3 64 139652 1531.31 489 480 90.9
C 13 61 3678 28.73 486 490 111.0
C 12 4 1846 12.22 486 490 111.0
C 8 222 1549 9.54 486 490 111.0
D 8 195 508721 4444.33 480 467 114.4
D 1 52 107091 932.35 480 467 114.4
D 4 95 91543 796.4 480 467 114.4

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