ASTROSAT CZTI

Data Quality Report

Orbit 23247

Creation date: 2024-06-27T18:51:48.215470
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/AS1A08_004T03_9000003438_23247cztM0_level2.evt modeM0/AS1A08_004T03_9000003438_23247cztM0_level2_quad_clean.evt
Size (bytes)476,576,64091,313,280
Size454.5 MB 87.1 MB
Events in quadrant A3,102,786598,855
Events in quadrant B3,147,683614,316
Events in quadrant C3,845,775567,690
Events in quadrant D3,922,421558,001

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129422
B0129533
C0152292
D0156402

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6117300.490436%
B6116420.686723%
C61161482.419882%
D61161041.700458%

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 7467 6118 0 0 0.00% 0.00%
B 7466 6117 3 3 0.04% 0.05%
C 7466 6117 38 38 0.51% 0.62%
D 7466 6116 66 66 0.88% 1.08%

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 6 16 24424 147.41 798 783 160.4
A 13 254 9172 52.31 798 783 160.4
A 0 226 7110 39.45 798 783 160.4
B 12 111 17114 107.48 800 782 151.9
B 11 111 14811 92.33 800 782 151.9
B 0 228 14617 91.05 800 782 151.9
C 0 239 493606 2790.52 761 767 176.6
C 0 10 150221 846.23 761 767 176.6
C 14 238 121518 683.71 761 767 176.6
D 1 52 609624 3207.56 775 752 189.8
D 2 152 240734 1264.23 775 752 189.8
D 13 172 62161 323.5 775 752 189.8

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