ASTROSAT CZTI

Data Quality Report

Orbit 32848

Creation date: 2024-06-27T20:43:02.702770
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/AS1C06_010T05_9000004736_32848cztM0_level2.evt modeM0/AS1C06_010T05_9000004736_32848cztM0_level2_quad_clean.evt
Size (bytes)608,843,520101,203,200
Size580.6 MB 96.5 MB
Events in quadrant A2,568,026703,030
Events in quadrant B4,002,795700,489
Events in quadrant C2,905,402699,769
Events in quadrant D8,581,310566,821

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0220
B0220
C0220
D0230

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0114693
B0154602
C0122342
D0294572

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160
B01160
C01160
D01160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5629260.461894%
B56294447.887724%
C5629611.083674%
D5629166329.543436%

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 7151 5630 21 21 0.29% 0.37%
B 7151 5630 327 327 4.57% 5.81%
C 7151 5630 44 44 0.62% 0.78%
D 7151 5630 1554 1554 21.73% 27.60%

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 9 143 69662 542.13 636 624 127.3
A 14 238 20787 158.33 636 624 127.3
A 13 254 11038 81.78 636 624 127.3
B 5 172 1112073 9389.14 622 607 118.4
B 0 197 158588 1334.55 622 607 118.4
B 8 128 133886 1125.88 622 607 118.4
C 3 233 239410 1681.86 617 622 142.0
C 0 10 173616 1218.45 617 622 142.0
C 1 241 25491 175.16 617 622 142.0
D 12 227 2411808 17089.81 544 533 141.1
D 7 80 1360296 9637.26 544 533 141.1
D 8 195 1034127 7325.55 544 533 141.1

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