ASTROSAT CZTI

Data Quality Report

Orbit 20070

Creation date: 2024-06-27T18:10:52.179894
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/AS1T03_120T01_9000002990_20070cztM0_level2.evt modeM0/AS1T03_120T01_9000002990_20070cztM0_level2_quad_clean.evt
Size (bytes)2,569,354,560555,258,240
Size2.4 GB 529.5 MB
Events in quadrant A19,314,8823,744,930
Events in quadrant B17,108,5123,801,169
Events in quadrant C14,667,7813,662,373
Events in quadrant D24,676,9843,523,216

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A06140
B06140
C06140
D06140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0764844
B0699414
C0621244
D0941034

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3037718396.053922%
B303786752.222003%
C303783331.096188%
D3037816175.322931%

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 32767 30382 1028 1028 3.14% 3.38%
B 32768 30383 227 227 0.69% 0.75%
C 32768 30383 0 0 0.00% 0.00%
D 32768 30383 915 915 2.79% 3.01%

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 14 238 4000348 5375.5 3668 3602 743.5
A 14 254 1098491 1472.59 3668 3602 743.5
A 0 226 31382 37.36 3668 3602 743.5
B 10 245 702883 998.27 3717 3634 700.5
B 7 220 598404 849.11 3717 3634 700.5
B 4 80 425482 602.24 3717 3634 700.5
C 14 238 571749 684.46 3583 3619 830.0
C 3 233 70452 80.52 3583 3619 830.0
C 13 61 25254 26.06 3583 3619 830.0
D 1 52 7203588 8369.16 3574 3486 860.3
D 12 218 2626378 3048.76 3574 3486 860.3
D 7 38 808884 936.17 3574 3486 860.3

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