ASTROSAT CZTI

Data Quality Report

Orbit 22449

Creation date: 2024-06-27T18:41:04.918246
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/AS1A07_056T01_9000003330_22449cztM0_level2.evt modeM0/AS1A07_056T01_9000003330_22449cztM0_level2_quad_clean.evt
Size (bytes)490,734,720132,494,400
Size468.0 MB 126.4 MB
Events in quadrant A3,072,834901,602
Events in quadrant B4,364,022908,589
Events in quadrant C3,438,225898,321
Events in quadrant D3,568,863874,556

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0131931
B0172231
C0142741
D0150081

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6164490.794938%
B61633425.549245%
C61631432.320299%
D6163701.135810%

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 7474 6165 0 0 0.00% 0.00%
B 7473 6163 238 238 3.18% 3.86%
C 7473 6163 19 19 0.25% 0.31%
D 7473 6164 15 15 0.20% 0.24%

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 3 1 22258 138.03 787 771 155.7
A 15 174 10318 61.33 787 771 155.7
A 13 254 9359 55.17 787 771 155.7
B 10 245 1265825 8838.26 778 760 143.1
B 0 228 16584 110.55 778 760 143.1
B 12 111 16421 109.41 778 760 143.1
C 10 22 192960 1067.47 778 783 180.0
C 14 238 124136 685.18 778 783 180.0
C 3 9 41782 227.73 778 783 180.0
D 1 52 473937 2541.67 782 761 186.2
D 13 249 60831 322.67 782 761 186.2
D 13 172 32536 170.68 782 761 186.2

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