ASTROSAT CZTI

Data Quality Report

Orbit 48561

Creation date: 2024-09-20T06:05:57.893612
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/AS1A13_037T01_9000006436_48561cztM0_level2.fits modeM0/AS1A13_037T01_9000006436_48561cztM0_level2_quad_clean.evt
Size (bytes)425,416,320103,772,160
Size405.7 MB 99.0 MB
Events in quadrant A6,808,238664,882
Events in quadrant B2,772,409721,853
Events in quadrant C2,656,738690,322
Events in quadrant D3,012,186618,026

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245795
B0130862
C0129682
D0140122

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0171
C0170
D0182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64082834.416355%
B6408240.374532%
C6408130.202871%
D6408630.983146%

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 7548 6409 151 151 2.00% 2.36%
B 7548 6409 4 4 0.05% 0.06%
C 7548 6409 3 3 0.04% 0.05%
D 7548 6409 50 50 0.66% 0.78%

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 4022121 28760.41 672 659 139.8
A 12 189 98361 698.74 672 659 139.8
A 13 248 39454 277.45 672 659 139.8
B 5 255 32241 235.44 686 663 134.1
B 12 111 17250 123.67 686 663 134.1
B 11 111 15716 112.23 686 663 134.1
C 12 250 13195 78.84 676 679 158.7
C 14 254 6294 35.37 676 679 158.7
C 13 61 4452 23.77 676 679 158.7
D 2 249 274852 1629.03 666 646 168.3
D 2 165 116182 686.39 666 646 168.3
D 2 234 34563 201.5 666 646 168.3

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