ASTROSAT CZTI

Data Quality Report

Orbit 23936

Creation date: 2024-06-27T19:00:15.068837
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_101T02_9000003544_23936cztM0_level2.evt modeM0/AS1A07_101T02_9000003544_23936cztM0_level2_quad_clean.evt
Size (bytes)553,138,56082,402,560
Size527.5 MB 78.6 MB
Events in quadrant A2,864,074541,053
Events in quadrant B2,920,627552,385
Events in quadrant C2,885,904529,976
Events in quadrant D7,666,470445,677

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123701
B0124621
C0124051
D0269731

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6097520.852878%
B6098520.852739%
C6098741.213513%
D6098268043.948836%

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 7027 6098 0 0 0.00% 0.00%
B 7028 6099 1 1 0.01% 0.02%
C 7028 6099 2 2 0.03% 0.03%
D 7028 6099 1318 1318 18.75% 21.61%

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 13 254 8563 52.36 742 726 149.7
A 3 137 6663 39.66 742 726 149.7
A 0 226 6396 37.88 742 726 149.7
B 12 111 16980 115.21 736 717 141.2
B 11 111 15363 103.75 736 717 141.2
B 14 111 13629 91.47 736 717 141.2
C 14 238 111632 672.28 704 708 165.0
C 0 10 17413 101.24 704 708 165.0
C 7 247 7928 43.76 704 708 165.0
D 12 218 4058221 33200.83 498 483 122.2
D 1 52 1008546 8248.08 498 483 122.2
D 12 250 311599 2545.58 498 483 122.2

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